{"title":"Audio Research Corporation","description":"","products":[{"product_id":"i50","title":"Audio Research I\/50 Integrated Amplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-HD2_95ac5b1e-7715-450e-b444-af13470105f8.webp?v=1761658054\" alt=\"I\/50 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        I\/50\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n       Integrated Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-4_c87e8184-ccac-4a48-9d1f-d95fa09acb3e.webp?v=1761658054\" alt=\"I\/50 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      I\/50 combines sublime performance and simplicity while accommodating a variety of musical sources in a single elegant package. Hand-crafted in Minnesota, the I\/50 is built with the same attention to detail as all other Audio Research products – each one is bench-tested twice and gets its own listening test with sound engineer Warren Gehl.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"\n  display: flex;\n  justify-content: center;\n  width: 100%;\n  background-color: #000;\n  margin: 0;\n  padding: 0;\n\"\u003e\n  \u003cdiv style=\"\n    position: relative;\n    width: 100%;\n    max-width: 1600px;\n    overflow: hidden;\n    margin: 0;\n    padding: 0;\n  \"\u003e\n\n    \u003c!-- Hình nền lớn --\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-wheel-colours-1_da195242-1496-4969-8d05-c1216d578da7.webp?v=1761658054\" alt=\"Background\" style=\"\n        width: 100%;\n        height: auto;\n        display: block;\n        object-fit: contain; \/* đảm bảo thấy toàn bộ hình *\/\n        margin: 0;\n        padding: 0;\n      \"\u003e\n\n    \u003c!-- Logo nằm giữa --\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-wheel-logo_a2297030-7302-4f73-8345-83d24df0b951.webp?v=1761658052\" alt=\"Logo\" style=\"\n        position: absolute;\n        top: 50%;\n        left: 50%;\n        transform: translate(-50%, -50%);\n        width: 20%; \/* điều chỉnh kích thước logo tại đây *\/\n        height: auto;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Responsive --\u003e\n\u003cstyle\u003e\n@media (max-width: 900px) {\n  img[alt='Logo'] {\n    width: 35% !important;\n  }\n}\n\u003c\/style\u003e\n\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      The foundation is an all-tube amplification circuit using two matched sets of 6550 power tubes, fed by 6922 input tubes. The traditional combination of power and grace for which Audio Research is renowned is instantly recognizable even in this compact model. Challenge the I\/50 and be surprised by its depth of bass and dynamic expression. Two LexieTubes® provide display information for input selection and volume.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-2_3b79c8b0-05fb-4a52-a2c9-ded0cb7f7cf4.webp?v=1761658053\" alt=\"I\/50 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-midpage1_d82fd135-a967-42da-bd4e-1daf8e602a0d.webp?v=1761658055\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n      \n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-3_b1e8a60a-6c86-4222-a1d1-8f7acd2aa3f2.webp?v=1761658054\" alt=\"I\/50 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003cp style=\"font-size:18px; color:#000000; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       Three single-ended inputs and one XLR input provide connectivity for your analog components, along with 4 and 8 Ohm speaker taps to accommodate your speaker of choice. One input can even be assigned for pass-through function. A full-function metal remote control provides further convenience and ease. An optional tube cage is available.\n      \u003c\/p\u003e\n    \n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n        Optional DAC and Phono modules round out your ability to include all your favorite recordings and listening styles. The AKM Velvet Sound DAC chip facilitates high resolution formats over USB, Optical, Coax, and even upsampling Bluetooth. Combined with the I\/50’s output stage, the result is finely graded resolution, but also authenticity of tone and purity that is rarely heard outside of the finest reference gear. The I\/50 has earned high acclaim for its ability to communicate musical intent and flow at a reasonable price and do so with a wide variety of partnering loudspeaker brands.\n      \u003c\/p\u003e \n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n    \n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n        The optional Phono module offers 42dB of gain to support Moving Magnet and a generous array of quality High Output Moving Coil cartridges to help you build a high-performance analog system with I\/50 as the heart.\u003cbr\u003e\u003cbr\u003e\nThe ability of the I\/50 to reconstruct a musical experience will thrill and excite all who hear it.\n      \u003c\/p\u003e \n      \u003cp style=\"font-size:18px; color:#000000; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       The I\/50 is a fully integrated product while providing true Audio Research performance and sound quality.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-1_a3ccd429-e9ef-4ac3-95c3-bc537c2d2476.webp?v=1761658054\" alt=\"I\/50 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n      \n\n\u003cdiv style=\"\n  background-color: #f2f2f2;\n  width: 100%;\n  display: flex;\n  justify-content: center;\n  padding: 40px 0;\n  margin: 0;\n\"\u003e\n  \u003cdiv style=\"\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 25px;\n    max-width: 1600px;\n    width: 100%;\n    padding: 0 20px;\n    box-sizing: border-box;\n  \"\u003e\n\n    \u003c!-- Hình 1 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Sil-front_fe3c49ad-0cb7-4210-b22b-899fce4014bf.webp?v=1761658054\" alt=\"Product 1\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 2 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Wht-front_1b49c43f-43e6-4aa4-bcb4-d6dd0cccc985.webp?v=1761658054\" alt=\"Product 2\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 3 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-BLK-front_2ba7df76-ae6f-4d75-be63-173799d78148.webp?v=1761658053\" alt=\"Product 3\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 4 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Red-front_41874e06-3343-41e6-97a3-6e97c37d73f4.webp?v=1761658054\" alt=\"Product 4\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 5 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Blu-front_f4557f42-7772-49b7-88aa-e9ed024edc9d.webp?v=1761658054\" alt=\"Product 5\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 6 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Gld-front_3a63772c-e6be-4ad9-bde7-684e3373a21a.webp?v=1761658054\" alt=\"Product 6\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Responsive --\u003e\n\u003cstyle\u003e\n@media (max-width: 900px) {\n  div[style*='grid-template-columns'] {\n    grid-template-columns: repeat(2, 1fr) !important;\n  }\n}\n@media (max-width: 600px) {\n  div[style*='grid-template-columns'] {\n    grid-template-columns: 1fr !important;\n  }\n}\n\u003c\/style\u003e\n\n\n\n\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-midpage4.jpg?v=1761658785\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-I50_a0d2022f-d53d-4a70-8eec-d352b99d6f1e.webp?v=1761658053\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e50 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% per channel, below 0.1% at 1 watt (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e (-3dB points) 10Hz to 22kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e (-3dB points at 1 watt) 7Hz to 30kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.25V RMS for rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100K ohms Balanced, 48K ohms Single Ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100K ohms Balanced, 50K ohms SE\u003cbr\u003e\n8 Inputs – 4 balanced, 4 single-ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e8 ohms, 4 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-130VAC 60Hz (210-250VAC 50Hz) 252 watts at rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 matched pairs 6550WE; 3 x 6922 (1 input, 2 driver)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 16.5” (42 cm)\u003cbr\u003e\nHeight 7.25” (18 cm)\u003cbr\u003e\nDepth 13.5” (34 cm)\u003cbr\u003e\nWeight: 40 lbs (18.1 kg); 51 lbs (23.1kg) shipping weight\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Audio Research Corporation","offers":[{"title":"Silver \/ Add Phono Module \/ Add DAC Module","offer_id":43320360272021,"sku":"13618","price":8500.0,"currency_code":"USD","in_stock":true},{"title":"White \/ Add Phono Module \/ Add DAC Module","offer_id":43320360304789,"sku":"13619","price":8500.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Add Phono Module \/ Add DAC Module","offer_id":43320360337557,"sku":"13620","price":8500.0,"currency_code":"USD","in_stock":true},{"title":"Red \/ Add Phono Module \/ Add DAC Module","offer_id":43320360370325,"sku":"13621","price":8500.0,"currency_code":"USD","in_stock":true},{"title":"Blue \/ Add Phono Module \/ Add DAC Module","offer_id":43320360403093,"sku":"13622","price":8500.0,"currency_code":"USD","in_stock":true},{"title":"Gold \/ Add Phono Module \/ Add DAC Module","offer_id":43320360435861,"sku":"13623","price":8500.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ No Phono \/ Add DAC Module","offer_id":43320360501397,"sku":"13633","price":7700.0,"currency_code":"USD","in_stock":true},{"title":"White \/ No Phono \/ Add DAC Module","offer_id":43320360534165,"sku":"13634","price":7700.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Phono \/ Add DAC Module","offer_id":43320360566933,"sku":"13635","price":7700.0,"currency_code":"USD","in_stock":true},{"title":"Red \/ No Phono \/ Add DAC Module","offer_id":43320360599701,"sku":"13636","price":7700.0,"currency_code":"USD","in_stock":true},{"title":"Blue \/ No Phono \/ Add DAC Module","offer_id":43320360632469,"sku":"13637","price":7700.0,"currency_code":"USD","in_stock":true},{"title":"Gold \/ No Phono \/ Add DAC Module","offer_id":43320360665237,"sku":"13638","price":7700.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Add Phono Module \/ No DAC","offer_id":43320360698005,"sku":"13639","price":7300.0,"currency_code":"USD","in_stock":true},{"title":"White \/ Add Phono Module \/ No DAC","offer_id":43320360730773,"sku":"13640","price":7300.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Add Phono Module \/ No DAC","offer_id":43320360763541,"sku":"13641","price":7300.0,"currency_code":"USD","in_stock":true},{"title":"Red \/ Add Phono Module \/ No DAC","offer_id":43320360796309,"sku":"13642","price":7300.0,"currency_code":"USD","in_stock":true},{"title":"Blue \/ Add Phono Module \/ No DAC","offer_id":43320360829077,"sku":"13643","price":7300.0,"currency_code":"USD","in_stock":true},{"title":"Gold \/ Add Phono Module \/ No DAC","offer_id":43320360861845,"sku":"13644","price":7300.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ No Phono \/ No DAC","offer_id":43320360894613,"sku":"13645","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"White \/ No Phono \/ No DAC","offer_id":43320360927381,"sku":"13646","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Phono \/ No DAC","offer_id":43320360960149,"sku":"13647","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"Red \/ No Phono \/ No DAC","offer_id":43320360992917,"sku":"13648","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"Blue \/ No Phono \/ No DAC","offer_id":43320361025685,"sku":"13649","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"Gold \/ No Phono \/ No DAC","offer_id":43320361058453,"sku":"13650","price":6500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/audio-research-i50-integrated-amplifier-red-angle_2024-04-13T11_52_24.484Z.png?v=1713009196"},{"product_id":"ls28-se","title":"Audio Research LS28SE Line-Stage","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS28SE-HD.webp?v=1761636387\" alt=\"LS28SE Line-Stage\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        LS28SE Line-Stage\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Preamplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003c!-- Left image --\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS28SE-6.webp?v=1761636388\" alt=\"LS28SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Right text --\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        A high-end preamplifier in its technical performance. An instrument in its ability to deliver a realistic and emotional connection to the music.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        The LS28SE draws on Audio Research’s experience creating, of all things, our Reference 160-series power amplifiers. Numerous costly component upgrades elevate the LS28SE’s clarity, resolution, transient snap, and sense of space. The relaxed purity and natural sense of balance are instantly noticeable and will inspire extended listening sessions.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS28SE-7.webp?v=1761636387\" alt=\"LS28SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Flexible operation\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       The LS28SE line stage offers flexible and intuitive operation. Four balanced and four single-ended inputs, and two sets of both balanced and single-ended outputs allow maximum connectivity. Input naming, tube hours, auto shutdown, and the assignment of home theater passthrough are all easily directed through the menu. Phase invert and mono are also standard functions.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n       The impact of a great preamplifier on your music system must not be ignored.\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        While loudspeakers and power amplifiers are obviously critical to the sound you hear, preamplifiers are often underestimated. Musical stones lay unturned because most preamps do not stand up to the caliber of the system in which they reside. Enter LS28SE. Its organic tone and inner detail bring an instant vitality and refinement to systems formerly employing other preamplifiers.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS28SE-1.webp?v=1761636387\" alt=\"LS28SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS28SE-midpage.webp?v=1761636389\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/AR-system-BW1.webp?v=1761636388\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n        \u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-LS28SE.webp?v=1761636387\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e+0-3dB, 0.4Hz to 200kHz at rated output\n(Balanced, 200k ohms load)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTHD+Noise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .007% at 2V RMS BAL output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than -100dBv at max volume (103)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDynamic Range\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e122dB (AES17)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eCrosstalk\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-105dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eMain output: 18.5dB balanced output.\u003cbr\u003e\n(12.5dB SE output.)  Record output: 0dB (Processor input: 0dB balanced out).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100K ohms Balanced, 50K ohms SE.\u003cbr\u003e\n8 Inputs – 4 balanced, 4 single-ended.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e600 ohms Balanced, 300 ohms SE Main (2), 20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 Main, 1 Record (XLR and RCA connectors).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eMaximum Input\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e16V RMS BAL, 8V RMS SE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRated Outputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 17V RMS at less than 0.5% THD at 1kHz).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eControls\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eRotary volume selector (103 steps) and rotary input selector. Push buttons: Power, Menu, Enter, Mono, Invert, Mute.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supplies\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eElectronically regulated low and high voltage supplies.  Automatic 45 sec. warm-up\/brown-out mute.  Line regulation better than .01%.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Compliment\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(4) 6H30P dual triode\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-125VAC 60Hz (200-250VAC 50\/60Hz) 130 watts maximum\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eStandby\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth: 19” (48 cm)\u003cbr\u003e\nHeight: 6.5” (13.7 cm)\u003cbr\u003e\nDepth: 13.7” (34.8 cm)\u003cbr\u003e\nHandles extend 1.6” (4 cm) forward of the front panel\u003cbr\u003e\nWeight:   16.0 lbs. (7.2 kg) Net; 24 lbs. (10.9 kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320361091221,"sku":"13606","price":12000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43320361123989,"sku":"13607","price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/LS28SE-Front.jpg-2.webp?v=1679419241"},{"product_id":"making-the-music-glow","title":"Audio Research Making The Music Glow","description":"\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/anoversary-book_e6ded237-a9e9-4eae-b1b5-a70ee070f0c6.png?v=1761638231\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  display: flex; \n  justify-content: center; \n  width: 100%; \n  background-color: #f9f9f9; \n  padding: 60px 20px;\n  box-sizing: border-box;\n\"\u003e\n  \u003cdiv style=\"\n    display: flex; \n    max-width: 1600px; \n    width: 100%; \n    background-color: #fff; \n    box-sizing: border-box;\n  \"\u003e\n    \n    \u003c!-- Cột trái --\u003e\n    \u003cdiv style=\"\n      flex: 2; \n      padding: 40px 50px; \n      color: #444;\n      font-family: Arial, Helvetica, sans-serif;\n      line-height: 1.6;\n    \"\u003e\n      \u003ch2 style=\"\n        font-size: 30px; \n        font-weight: 400; \n        color: #c7b08c; \n        margin-bottom: 20px;\n      \"\u003e\n        Making The Music Glow. - partnering with author Ken Kessler the book commemorates the company’s 50th anniversary.\n      \u003c\/h2\u003e\n      \n      \u003cp style=\"\n        font-weight: bold; \n        font-size: 18px; \n        color: #444; \n        margin-bottom: 20px;\n      \"\u003e\n        Audio Research: “Making the Music Glow”, describes the people behind the company, designing, manufacturing, fine-tuning, and marketing the audio amplification and source components that have been regarded perpetually as among the best in the industry. Celebrating its first half-century, the book tells the story of a manufacturer that helped define high-end audio, with the sole purpose of elevating the sound quality of music in the home.\n      \u003c\/p\u003e\n      \n      \u003cp\u003e\n        William Zane “Bill” Johnson established Audio Research in 1970, basing its products on what was then considered by many to be obsolete technology: vacuum tubes. Guided by his passion for music and quality listening with a refusal to fall victim to fashion and design trends of the times, Johnson was revolutionary in sound reproduction.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        It needed to bring Bill Johnson’s passion, creativity, and dedication to life, showcasing how Bill’s legacy lives on in the people and products that ARC continues to live and breathe today. Now more than ever, this book feels so right – it endures, it is timeless, it is the perfect reflection of an Audio Research product in that it will last a lifetime.\n      \u003c\/p\u003e\n\n      \u003cp\u003e\n        With open access to the company’s archives, the participation of employees, and the support and insights of Bill’s wife, Nancy, “Audio Research: Making the Music Glow” is filled with rare images, curated reprints of period interviews, the definitive product listing, and a study of what the experts have determined to be the company’s 25 greatest achievements, augmented by fresh photography of each model. Within the pages are the stories of the company’s roots, its development, its evolution, and its tenacious hold on delivering industry standard in music playback.\n      \u003c\/p\u003e\n\n      \u003cp style=\"font-weight: bold; margin-top: 20px;\"\u003e\n        To buy your copy please contact us at: \u003ca href=\"(904)%20642-6677\" style=\"color:#666;\"\u003eCall us (904) 642-6677\u003c\/a\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Cột phải --\u003e\n    \u003cdiv style=\"\n      flex: 1; \n      background-color: #6e6e6e; \n      color: #fff; \n      display: flex; \n      align-items: center; \n      justify-content: center;\n      padding: 20px;\n      text-align: left;\n      font-family: Arial, Helvetica, sans-serif;\n      font-size: 20px;\n      line-height: 1.6;\n    \"\u003e\n      \u003cp style=\"max-width: 300px; margin: 0;\"\u003e\n        THIS ISN’T JUST ANY BOOK, THE ‘REFERENCE’ QUALITY HISTORY OF AUDIO RESEARCH, AUTHENTIC AND HONEST IN ITS STORYTELLING IS ‘HIGH DEFINITION’ IN CONTENT, ART, AND EXECUTION.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Responsive cho di động --\u003e\n\u003cstyle\u003e\n@media (max-width: 768px) {\n  div[style*=\"max-width: 1600px\"] {\n    flex-direction: column;\n  }\n  div[style*=\"background-color: #6e6e6e\"] {\n    order: -1;\n  }\n}\n\u003c\/style\u003e\n\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Spread2-1536x1075_jpg_524e6b8f-aa62-473f-9212-e555d7bb88cb.webp?v=1761638231\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e","brand":"Audio Research Corporation","offers":[{"title":"Default Title","offer_id":43320361189525,"sku":"13632","price":187.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/MultipleCovers-1536x1399_jpg.webp?v=1679419326"},{"product_id":"ph9","title":"Audio Research PH9 Phono Stage","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/PH9-phono-HD.webp?v=1761637625\" alt=\"PH9\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        PH9\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Phono Stage\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        PH9 provides class leading phono preamplification for the majority of cartridge and turntable combinations.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        A trio of 6H30 vacuum tubes form the core of a simple and clear signal path. A classic Audio Research design, the PH9 revels in the vibrance and vitality with which tube gear excels, yet neutrally portrays the subtlest shadings in cartridge and tone-arm selections with transparency.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/PH9-angle2.webp?v=1761637624\" alt=\"PH9 Phono Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/PH9-front-crop.webp?v=1761637626\" alt=\"PH9 Phono Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Five impedance settings\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       Five different impedance settings allow for cartridge loading, which can be changed on the fly with the included metal remote. Cartridge impedance, tube hours, auto shutdown, and other features are included in the menu system.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/PH9-internal.webp?v=1761637626\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n  \n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n       Since 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. PH9 continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/PH9-rear.webp?v=1761637625\" alt=\"PH9 Phono Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref6-ref160M-system2.webp?v=1761637626\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-PH9-phono-1.webp?v=1761637622\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e±.2 dB of RIAA, 5 Hz to 20kHz; 1 dB points below 0.3Hz and above 80 kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDistortion\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .015% at 3V RMS 1kHz output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e58 dB at 1 kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eSelectable loads: 47k, 1000, 500, 200, 100 Ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e200 ohms. Recommended load 50k-100k Ohms and 100 pF. (10k Ohms minimum and 2000 pF maximum).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eMaximum Input\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e80 mV RMS at 1kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRated Outputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e0.5V RMS 10 Hz to 60 kHz, into 100K ohm load (maximum balanced output capability is 0.46V RMS at less than 0.5% THD at 1kHz)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eControls\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e6 Push Buttons:   Power, Menu, Option, Enter, Input, Mute\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supplies\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eElectronically regulated low and high voltage supplies.   Automatic 2 minute warm-up\/brown-out mute. Line regulation better than .01%\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e77 dB, shorted inputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Complement\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(3)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100-125VAC 60Hz (200-250VAC 50\/60Hz) 120 watts maximum. Standby: 2 watts\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth: 19” (48 cm)\u003cbr\u003e\nHeight: 6.5” (13.7 cm)\u003cbr\u003e\nDepth: 13.7” (34.8 cm)\u003cbr\u003e\nHandles extend 1.6” (4 cm) forward of the front panel\u003cbr\u003e\nWeight: 15.4 lbs. (7 kg) Net; 23.5 lbs. (10.7 kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320362795157,"sku":"13628","price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Product-PH9-Angle_jpg.webp?v=1679419681"},{"product_id":"reference-10","title":"Audio Research Reference 10 Line Stage","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-pre-HD.webp?v=1761639670\" alt=\"Reference 10 Line-Stage\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; right:100px; text-align:right;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:45px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        Reference 10 Line-Stage\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Preamplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-pre-fplate.webp?v=1761639670\" alt=\"Reference 10 Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Our ultimate preamplifier\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        Audio Research has made history with industry-landmark preamplifier designs such as the SP3 in 1973, and again in 2010 with the Reference Anniversary preamplifier. In particular, The Reference Anniversary was a special limited-edition product commemorating our 40th year.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        At the time, it was acclaimed by many as the finest preamplifier available and a fitting tribute to all the classic Audio Research products that were introduced since the company’s birth. We were met with disbelief that we would only accept orders for this special product during the anniversary year, yet we considered the limited time frame appropriate. But in the years that followed, research and advancement inexorably reached further. The result is the best preamplifier Audio Research has yet devised, the Reference 10 line stage.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Dual mono topology\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       REF10 accesses power via a single 20A power cord. After that, it is completely dual-mono from the power supply through the audio circuit. There are dual, separate low- and high-voltage transformers for each channel; there is dual-mono vacuum-tube regulation (one 6H30 and one 6550 per channel), dual-mono audio circuits (four 6H30 per channel), and enough energy storage for a serious power amplifier.\u003cbr\u003e\u003cbr\u003e\nKey Audio Research design traits remain: The signal path is fully discrete, all-tube, pure Class-A, with zero feedback. Other attributes and choices remain, too: Each unit is completely hand-soldered and hand-constructed in our Minnesota facility using the finest materials, with major components such as custom transformers, plated-through circuit boards, and casework sourced locally. All engineering is performed in-house.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/REF-10-Preamp-crop.webp?v=1761639670\" alt=\"Reference 10 Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-pre-insde-midpage.webp?v=1761639670\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n  \n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       Experience the life-sized scale offered by our statement preamplifier. REF10 unleashes the full dimension and natural weight of recordings both large and small in scope. The deepest sub-bass is fully rendered, whether from the lowest instruments or architectural queues from the building in the recording itself.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0; color:#ffffff;\"\u003e\n       Never pushed or overblown, the ease of the largest ensembles thunders and rolls through your room as heard live. The inner-most timbre and grain structure of voices and instruments build upon this with a level of quietness, authenticity, and polish that must be heard to be believed. Even tiny spatial queues specific to each recording venue are beautifully resolved. Such a rich signal is what amplifiers hunger for to be at their very best. There is no substitute.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-inside-1.webp?v=1761639670\" alt=\"Reference 10 Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-PS-Midpage.webp?v=1761639671\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n     \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-pre-3.webp?v=1761639670\" alt=\"Reference 10 Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n       The Power Supply\n      \u003c\/h2\u003e\n\n       \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       The power supply chassis, connected to the main unit via two umbilical cords, simply has one green LED under its offset Audio Research logo.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0; color:#000000;\"\u003e\n       All of the side panels are finished identically to the front panels: Natural anodized, one quarter-inch thick, with no screws visible. The entire chassis (including rear panel) is painted silver to complete the look. There are beautiful clear acrylic covers with a revised perforation pattern.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n       Simply stunning performance\n      \u003c\/h2\u003e\n        \n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0; color:#000000;\"\u003e\n       Just as the Reference Anniversary was shockingly better than its predecessors, the Reference 10 offers a further level of resolution, refinement and dynamism that vividly improve the musical experience in every way. As we have said before, words can only fall short of your own experience; to understand how much more profound listening to your favorite recordings can be, you must hear the Reference 10.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/REF-10-Preamp-BK.webp?v=1761639670\" alt=\"Reference 10 Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n  \n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref10-system-BW.webp?v=1761639671\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-Ref10-Pre.webp?v=1761639670\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e+0 -3dB 0.1Hz to 200kHz at rated output.\u003cbr\u003e\n(BALANCED, 200k ohms load.)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDistortion\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .006% at 2V RMS Balanced output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eMain output (SE or BAL input)12dB Balanced output,\u003cbr\u003e\n6dB Single Ended output. Tape output: 0dB.\u003cbr\u003e\n(Processor input: 0dB Balanced)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e120K ohms Balanced, 60K ohms SE,\u003cbr\u003e\nInputs (7): 1, 2, 3, 4, 5, 6, PROCESSOR.\u003cbr\u003e\n(XLR and RCA connectors).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e600 ohms Balanced, 300 ohms SE main (2),\u003cbr\u003e\n20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 main, 1 tape\u003cbr\u003e\n(XLR and RCA connectors).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eMaximum Input\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e20V RMS maximum Balanced, (10V RMS SE)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRated Outputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 0.5% THD at 1kHz)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eCrosstalk\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-80dB or better at 1kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eControls\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eVolume (104 steps). Push Buttons: Power, Mute, Interactive Touch Panel. Rear RS-232 control and IR input\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supplies\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eElectronically regulated low and high voltage supplies. Automatic 40 sec. warm-up\/brown-out mute.\u003cbr\u003e\nLine regulation better than .01%.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Complement\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(8)-6H30P dual triodes, plus (2 each) 6550C and 6H30P in power supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100-135VAC 60Hz (200-270VAC 50\/60Hz) 235 watts maximum. Standby 0.8 watts.\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 19” (48 cm); Height 7” (17.8 cm) (standard rack panel)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320363253909,"sku":"13602","price":42000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Product-Ref-10-Front_jpg.webp?v=1679419905"},{"product_id":"reference-160m","title":"Audio Research Reference 160M MKII Mono Amplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/160M-HD3.webp?v=1761644342\" alt=\"Reference 160M MKII Mono Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        Reference 160M MkII\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#000000; letter-spacing:2px; opacity:0.9;\"\u003e\n        Monoblock Power Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160M-2.webp?v=1761644343\" alt=\"Reference 160M MKII Mono Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The Reference 160M MkII Monoblock Power Amplifier is a central pillar in the Audio Research range of Reference Amplifiers.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       It features a refined audio topology with fewer and better components in the signal-path than in previous designs, switchable Ultralinear\/Triode operation, proprietary auto-bias, output tube monitoring and protection, and much more.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        This array of features has never been offered before in an Audio Research amplifier, but has now been adopted across the product range.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160M-group3.webp?v=1761644342\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Key design elements\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:18px; color:#000000; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        While the trademark GhostMeter™ serves as a window to the output tubes, it also incorporates an innovative power output meter with distinctively etched markings that create an integrated display with adjustable brightness.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n       Four KT150 output tubes and two 6H30 driver tubes form the core of the audio circuit.\u003cbr\u003e\u003cbr\u003e\nThe power supply stage uses a newly developed High Energy Capacity Transformer and a hefty bulk storage-capacity network to provide extremely high current on demand for transient peaks and intense dynamics, as well as for prodigious bass depth and authority.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160M-7.webp?v=1761644342\" alt=\"Reference 160M MKII Mono Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Digital that sounds like analog\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       It is understood that the best path is the shortest path. A 4-layer circuit board serves as the platform of the ultra-high grade and custom-made components that comprise this short but potent audio pathway. The result is a new benchmark in musicality in every criterion of performance.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160M-6.webp?v=1761644342\" alt=\"Reference 160M MKII Mono Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      REF160M MkII also features a proprietary auto-bias circuit that works with various tubes types, including 6550, KT88, and KT120, in addition to the supplied KT150 and works constantly to maintain precise bias of the output tubes, while also adjusting for tube wear. There is no need to check or adjust bias ever again.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The new REF 160M MkII breaks new ground sonically, aesthetically and operationally, and is available in Natural (Silver) or Black finishes.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160M-1.webp?v=1761644343\" alt=\"Reference 160M MKII Mono Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/160M-system.webp?v=1761644343\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n     \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-160M-1.webp?v=1761644338\" alt=\"Reference 160M MKII Mono Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e140 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB Points) 5Hz to 70kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB points at 1 watt) 0.5Hz to 110kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e200k ohms Balanced; 100k ohms Single-ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4, 8, 16 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Regulation\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eApproximately 0.6dB 16 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 14)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOverall Negative Feedback\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e14dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eSlew Rate\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e13 volts\/microsecond\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRise Time\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2.0 microseconds\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements per Monoblock\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-130VAC 60Hz (210-250VAC 50Hz) 400 watts at rated output, 700 watts maximum,\n260 watts at “idle”, 1 watt off.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTubes Required per Monoblock\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 matched pair KT150 (Power output V1-4); 4 6H30 (Gain stage V5 and V6)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eWeight per Monoblock\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e56lbs (25.5 kg) Net\u003cbr\u003e\n73lbs (33.2 kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 17.25” (43.8 cm)\u003cbr\u003e\nHeight 10” (25.4 cm)\u003cbr\u003e\nDepth 18.5” (47 cm)\u003cbr\u003e\nHandles Extended 19.25” (48.9 cm)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320363417749,"sku":"13608","price":45000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43320363450517,"sku":"13609","price":45000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Product-Ref160M-Angle-Black_jpg.webp?v=1679420545"},{"product_id":"reference-160s","title":"Audio Research Reference 160S Stereo Amplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/160S-HD.webp?v=1761645717\" alt=\"Reference 160S Stereo Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; right:100px; text-align:right;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        Reference 160S\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Stereo Power Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref-160S-4.webp?v=1761645717\" alt=\"Reference 160S Stereo Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n       The Reference 160S stereo power amplifier follows in the footsteps of the internationally acclaimed REF160M monoblock power amplifier, which has won multiple amplifier-of the-year honors from publications such as Stereophile, Hi-Fi+, and others.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160S-midpage.webp?v=1761645718\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        GhostMeters™\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        REF160S carries-over the stunning look of the 160M, with dual GhostMeters™ that float in front of the eight KT150 output power tubes.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       Also continued is the the feature set introduced in the 160M, including a proprietary auto-bias circuit, switchable Triode or Ultralinear modes of operation, balanced and single-ended inputs, and an output tube monitoring mode. The 160S also uses a four-layer circuit board, allowing music to emanate from a jet-black background.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160S-8.webp?v=1761645717\" alt=\"Reference 160S Stereo Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n   \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160S-3jpg.webp?v=1761645717\" alt=\"Reference 160S Stereo Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n       With a weight of 100 lbs. the REF160S distills the astonishing resolution, dynamic impact, musical purity and finesse of the 160M into one beautiful and attainable chassis. It was designed for the music lover in all of us.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n   \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160S-midpage2.webp?v=1761645717\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160M-S-system.webp?v=1761645717\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-160S.webp?v=1761645716\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e140 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB Points) 5Hz to 70kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB points at 1 watt) 0.5Hz to 110kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e300k ohms Balanced; 100k ohms Single-ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4, 8, 16 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Regulation\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eApproximately 0.6dB 16 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 14)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOverall Negative Feedback\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e14dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eSlew Rate\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e13 volts\/microsecond\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRise Time\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2.0 microseconds\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-130VAC 60Hz (210-250VAC 50Hz) 875 watts at rated output, 700 watts in Triode mode, 500 watts at “idle”, 3.6 watts off\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTubes Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4 matched pair KT150 (Power output V1-4); 4 6H30 (Gain stage V5 and V6)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100lbs\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth  19.0” (48.26 cm)\u003cbr\u003e\nHeight 10.25” (26 cm)\u003cbr\u003e\nDepth  21.5” (54,61 cm)\u003cbr\u003e\nWith Handles and Connectors: 24” (60.96 cm)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320363614357,"sku":"13610","price":28000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43320363647125,"sku":"13611","price":28000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Product-REF-160s-front_jpg.webp?v=1679421004"},{"product_id":"reference-6-se","title":"Audio Research Reference 6SE Line-Stage","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref6-HD-1.webp?v=1761638389\" alt=\"Reference 6SE Line-Stage\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; right:100px; text-align:right;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:45px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        Reference 6SE Line-Stage\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Preamplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        Discover why Audio Research enjoys a long tradition of producing the finest preamplifiers in the world.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        In 1973, the SP3 was hailed by every major critic as the best preamplifier available, and this pursuit has continued ever since. The Reference Series from Audio Research was first introduced in 1995 and has been the ultimate expression of performance, musicality and dynamics.\n      \u003c\/p\u003e\n\n    \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        Reference preamps have awakened countless listeners to the irreplaceable contribution of a great preamp to a system’s final performance. The Reference 6SE is the latest chapter in our story.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref6-1.webp?v=1761638390\" alt=\"Reference 6SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        The Reference 6SE delivers the highest performance ever available in a single-chassis preamplifier.\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       Benefitting from research that went into the Reference 160-series amplifiers, and the Reference 750SEL amplifier, the 6SE incorporates a myriad of new components that have been judiciously incorporated into its design.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref6SE-black.webp?v=1761638391\" alt=\"Reference 6SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref6-system2.webp?v=1761638398\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n  \n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       With a single gain stage, the 6SE is a fully-balanced, Class-A design with zero feedback.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0; color:#ffffff;\"\u003e\n       In addition to six long-life 6H30 tubes in the gain stage, the enormous and highly-regulated power supply has another 6H30 with a 6550, typically found as an output tube in a power amplifier, providing vacuum-tube regulation.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref-6-inside.webp?v=1761638392\" alt=\"Reference 6SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref6-midpage.webp?v=1761638398\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0; color:#000000;\"\u003e\n       The 6SE stands on the shoulders of prior Reference preamplifiers and the latest ARC power amplifiers from which innovations were taken. As such, it forms the foundational circuit for other preamplification products such as the Reference Phono 3SE.\u003cbr\u003e\u003cbr\u003e\nRegardless of the recording, in stepping up into a Reference preamplifier, the sonic gains are immediate and compelling. Effortless, dynamic, and dimensional. The speed and resolution merge with musical color and textures that are both accurate and captivating.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref-6-back.webp?v=1761638390\" alt=\"Reference 6SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref6-system.webp?v=1761638395\" alt=\"Reference 6SE Line-Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0; color:#000000;\"\u003e\n       Low bass extension and heft from the 6SE reveal just how much bottom end reach is left to be desired in lesser designs. New 6SE owners revel in the potential that can now be tapped in their existing power amplifier’s and loudspeaker’s performance.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:18px; color:#000000; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       Hear for yourself why so many listeners consider the Reference 6SE to be the indispensable core of a world-class performance audio system.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n  \n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref6-ref160Msystem5-1.webp?v=1761638396\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-LS6-1.webp?v=1761638387\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e+0-3dB, 0.4Hz to 200kHz at rated output\n(Balanced, 200k ohms load)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDistortion\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .01% at 2V RMS BAL output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eMain output: 12dB Balanced output, 6dB SE output\u003cbr\u003e\nRecord out: 0dB (Processor input: 0dB BAL output)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e120K ohms Balanced, 60K ohms SE\u003cbr\u003e\nInputs: 4 balanced, 4 single-ended\u003cbr\u003e\nAssignable processor passthrough\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e600 ohms Balanced, 300 ohms SE Main (2)\u003cbr\u003e\n20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 main, 1 record out (XLR and RCA connectors).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eMaximum Input\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e18V RMS BAL, 9V RMS SE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRated Outputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 70V RMS at less than 0.5% THD at 1kHz)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eCrosstalk\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-88dB or better at 1kHz and 10 kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eControls\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eRotary encoders: Volume (103 steps), Select Input.\u003cbr\u003e\nPush Buttons:  Power, Menu, Enter, Mono, Invert, Mute\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supplies\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eElectronically regulated low and high voltage supplies.  Automatic 45 sec. warm-up\/ brown-out mute. Line regulation better than .01%.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Complement\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(6)-6H30P dual triodes, plus (1 each) 6550WE\nand 6H30P in power supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100-135VAC 60Hz (200-250VAC 50\/60Hz) 130 watts.  Standby: 2 watts.\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth: 19” (48 cm)\u003cbr\u003e\nHeight: 7.8” (19.8 cm)\u003cbr\u003e\nDepth: 16.5” (41.9 cm)\u003cbr\u003e\nHandles extend 1.6” (4 cm) forward of the front panel.\u003cbr\u003e\nWeight: 37.5 lbs. (17 kg) Net; 49 lbs. (22.3 kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320363679893,"sku":"13604","price":22500.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43320363712661,"sku":"13605","price":22500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Product-Ref-6-Front_jpg.webp?v=1679421236"},{"product_id":"reference-80s","title":"Audio Research Reference 80S","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/80S-HD.webp?v=1761641391\" alt=\"Reference 80S\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        Reference 80S\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Stereo Power Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref80s-7.webp?v=1761641392\" alt=\"Reference 80S\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The Reference 80S stereo amplifier continues Audio Research’s latest design effort in creating a vacuum-tube amplifier that not only redefines ultimate music reproduction, but does it in an incredibly beautiful package.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n       The 80S was created with as much spirited authority as we can pack into a compact circuit with 2 KT150 tubes per channel for music lovers who want Reference-level performance at the lowest possible barrier to entry.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        Like every Reference amplifier before it, the 80S is a fully-balanced differential design, delivering the highest performance and lowest distortion. A four-layer circuit board is used to provide a separate ground plane, better circuit layout, and fewer noise-inducing point-to-point connections.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       Music is projected against a quiet, jet-black background—like looking at the stars out in the country, removed from light pollution. It is magical and enveloping. The finest details are heard, with rich harmonics, incisive bass, and full dynamic contrasts, showcased with the ambience of the original acoustic space.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref80s-8.webp?v=1761641392\" alt=\"Reference 80S\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/80S-midpage.jpg?v=1761643594\" alt=\"Reference 80S\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:40px; font-weight:400; color:#d9caa7; letter-spacing:1px; max-width:900px;\"\u003e\n        a fully-balanced differential design that provides the highest performance \u0026amp; lowest distortion\n      \u003c\/h1\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref80s-6.webp?v=1761641392\" alt=\"Reference 80S\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#000000; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        Outwardly, the 80S shares the same dimensions as the 160M. A single shallow whisper fan is built into the bottom plate. Flexibility is built-in, too, with XLR and SE inputs, 4-8-16 ohm output taps, 12V input and output triggers, RS232 input, tube hour meter, switchable fan speeds, and defeatable auto-off function.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n       The feature set is the same as the 160S, including a proprietary auto-bias circuit that adjusts for not only tube age, but for powerline voltage swings. There is fusing of the output tubes for safety and stability, single-ended and balanced inputs for flexibility, switchable Triode\/Pentode operation – distinguished from the Triode\/Ultralinear modes in the 160 models – to accommodate loudspeakers and personal preference, output tube monitoring, and inclusion of an hour meter. This is a tube amplifier that does not require fiddling and is meant to be enjoyed. The built-in 12V trigger turns the 80S on or off when connected to a modern preamp.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      Built by hand, from the ground-up in our Maple Grove, Minnesota facility, the 80S can fool you into feeling you are in the presence of the musical performance. Whatever your reference speakers may be, whether they are from Wilson, Magnepan, Vandersteen, Focal, Sonus faber, B\u0026amp;W, or countless others: the Reference 80S will elevate their performance to a new plateau.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref-80S-5.webp?v=1761641392\" alt=\"Reference 80S\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref80s-system.webp?v=1761641392\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n     \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-80s.webp?v=1761641391\" alt=\"Reference 80S\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e70 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB Points) 7Hz to 68kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB points at 1 watt) 0.7Hz to 94kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms). RMS SE for rated output. \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e300k ohms Balanced; 75k ohms Single-ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4, 8, 16 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Regulation\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eApproximately 1.0dB 16 Ohm Load to Open Circuit (Damping factor approximately 8)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOverall Negative Feedback\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e15dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eSlew Rate\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e10 volts\/microsecond\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRise Time\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4.0 microseconds\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-130VAC 60Hz (210-250VAC 50Hz) 420 watts at rated output, 280 watts in Triode mode, 221 watts at “idle”, 3.6 watts off Units for Japan: 100VAC 50\/60Hz \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTubes Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 matched pair KT150 (Power output V1-V4); 2 6H30 (Gain stage V5, V6)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e62 lbs. (28.2 kg) Net; 73 lbs. (32.7 kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 18.5” (47 cm) chassis; 19.0” (48.26 cm) faceplate.\u003cbr\u003e\nHeight 10.5” (26 cm)\u003cbr\u003e\nDepth 18.5” (47 cm)\u003cbr\u003e\nWith handles \u0026amp; connectors: 21” (53.3 cm) \u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320363843733,"sku":"13612","price":18500.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43320363876501,"sku":"13613","price":18500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Ref-80S-side-cover-NAT-half-scaled_jpg.webp?v=1679422682"},{"product_id":"reference-phono-10","title":"Audio Research Reference Phono 10 Phono Stage","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-phonoHD.webp?v=1761649023\" alt=\"Reference Phono 10 Phono Stage\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        Reference Phono 10\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Phono Stage\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref10-phono-rack2.webp?v=1761649023\" alt=\"Reference Phono 10 Phono Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Triumphantly validating the superiority of analog\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The Reference Phono 10 is the product that triumphantly validates the superiority of analog music playback.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        From the first note on that treasured LP, its greatness is at once obvious and breathtaking—the Reference Phono 10 is a sonic blockbuster that establishes the new standard in analog music playback. Emphatically.\u003cbr\u003e\u003cbr\u003e\nThrough the REF Phono 10, great vinyl takes on an explosive, dynamic quality that is normally encountered only in a live performance, whether it is the crescendo of an orchestra or the delicacy of a solo piano. When called for, the stage is vast, holographic, and enveloping: Dimensionality is redefined, with an engaging, ‘reach out and touch it’ quality.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The REF Phono 10 resolves so much detail without grain, delighting listeners with new information extracted from those familiar grooves. The musical experience is so much more involving and persuasive—you do not want it to end. But these are mere words that pale in comparison to the actual listening experience, Music in High Definition®.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      The Reference Phono 10 is a true dual-mono design with totally separate signal paths for each channel, from the dual-mono power supply forward. There are separate high- and low-voltage transformers for each channel, with sufficient energy storage for a serious amplifier, providing incredible dynamic headroom. There are twenty stages of electronic regulation, with separate vacuum-tube regulation for each channel.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/REF-10-06.webp?v=1761649023\" alt=\"Reference Phono 10 Phono Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-phono-insides.webp?v=1761649023\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n       \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Separate amplification \u0026amp; power supply chassis\n      \u003c\/h2\u003e\n    \n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n        The audio circuits are fully discrete, pure Class-A, with zero feedback. The low gain audio section uses eight 6H30 tubes, four per channel. Rather than using a step-up transformer, special high-gain, extremely low-noise FETs are used in the high- gain section.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       This approach is costlier than using a transformer, but it is well worth the dramatic increase in performance.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n   \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-phono2.webp?v=1761649022\" alt=\"Reference Phono 10 Phono Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref10-PS-Midpage_7b92d488-23c2-4027-9d12-dc7e04e51c56.webp?v=1761649023\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n  \n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref10-phono-rqck2.webp?v=1761649023\" alt=\"Reference Phono 10 Phono Stage\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The design is fully balanced, with an input circuit that allows its RCA inputs to operate in a balanced configuration without requiring an inverter.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        There are two sets of inputs, independently configurable, including switchable Low and High gain, seven loading options, plus Custom which can be factory-set according to your needs. In addition to standard RIAA equalization, the Reference Phono 10 also includes early Columbia and Decca equalization curves. All controls can be accessed from your seat via remote control.\n      \u003c\/p\u003e\n  \n  \u003c\/div\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ref56-ref10-phono-system-BW.webp?v=1761649024\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-Ref10-Phono.webp?v=1761649021\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e± .2dB of RIAA, 10Hz to 60kHz; 3dB points below 0.3Hz and above 300kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDistortion\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .002% at 1.0V RMS 1kHz output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eSelectable 51dB (Low), 74dB (High) at1kHz BAL; 45dB (Low), 68dB (High) at1kHz SE. (MC \u0026amp; MM compatible)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eButtons\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eFront (2) Power, Mute.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e47K ohms and 100pF SE. Selectable loads 1000, 500, 200, 100, 50 ohms and Custom\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e200 ohms SE, 400 ohms balanced. Recommended load 50K-100K ohms and 100pF. (10K ohms minimum and 2000pF maximum).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePhono Equalization\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(Selectable) RIAA, Columbia, Decca\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eMaximum Input\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e250mV RMS at 1kHz (680 mV RMS at10kHz)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRated Outputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e0.5V RMS 10Hz to 20kHz, 100K ohm load (output capability is 80V RMS BAL output at 1\/2% THD at1kHz, 40V SE)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supplies\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eElectronically regulated low and high voltage supplies. Automatic 40 sec. warm-up\/brown-out mute. Line regulation better than .01%.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e0.22uV equivalent input noise, IHF weighted, shorted(Low Gain) input (73 dB below 1mV 1kHz input). 0.055uV equivalent input noise (High Gain) (65dB below 0.1mV 1kHz input).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Complement\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(8)-6H30P dual triodes, plus (2 each) 6550C and 6H30P in power supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100-135VAC 60Hz (200-270VAC 50\/60Hz) 235 watts maximum. Standby 0.8 watts.\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eAudio Chassis: 22 lbs. (10 kg)\u003cbr\u003e\nNet: 34 lbs. (15.5 kg) Shipping.\u003cbr\u003e\nPower Supply Chassis: 35 lbs. (15.9 kg)\u003cbr\u003e\nNet: 43 lbs. (19.5 kg) Shipping.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320363909269,"sku":"13624","price":42000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Product-REF-Phono-10-Angle-1.jpg-3.webp?v=1679423057"},{"product_id":"reference-phono-3se","title":"Audio Research Reference Phono 3SE","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref3-Phono-HD3.webp?v=1761649931\" alt=\"Reference Phono 3SE\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        Reference Phono 3SE\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Phono Stage\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref3-phono-3-1.webp?v=1761649931\" alt=\"Reference Phono 3SE\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        The Reference Phono 3SE represents a new performance benchmark in a single-chassis phono stage.\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        When Audio Research was founded in 1970, analog vinyl playback was the de facto music source of the time. Audio Research has built phono playback into preamplifiers or created stand-alone phono stages since the very beginning.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      The knowledge gained in the creation of Audio Research’s latest award-winning Reference-series amplifiers has transitioned to both the Reference 6SE line-stage and the Reference Phono 3SE, elevating its performance dramatically. Ultra-high quality parts and design details usher in a new level of sonic accuracy and musicality.\u003cbr\u003e\u003cbr\u003e\nThe improvements in the latest REF Phono 3SE include enhanced resolution at all levels, greater purity and focus, improved transient speed and snap, and better dynamic. shading. The sum of these improvements is exceptional, further breaking down the barrier between reproduced sound and the immediacy of a live event.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref3-Phono-6.webp?v=1761649931\" alt=\"Reference Phono 3SE\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref3-inside.webp?v=1761649931\" alt=\"Reference Phono 3SE\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003cp style=\"font-size:18px; color:#000000; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n       The vacuum-tube audio stage utilizes six 6H30 vacuum tubes (three per channel), while a 6H30 and a 6550 provide partial tube regulation in the power supply.\n      \u003c\/p\u003e\n    \n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n        The large, vacuum fluorescent display on the front panel shows all functions relative to the selected input. A row of six buttons controls power, mute, input, and menu controls.\n      \u003c\/p\u003e\n      \n    \u003c\/div\u003e\n   \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref3-Phono-midpage.webp?v=1761649933\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      Two inputs provide connectivity to two turntables or tonearms, with independent settings for each input. Other features include variable display brightness, an IR input, tube hour meter, and both balanced and single-ended outputs.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref3-Phono-5.webp?v=1761649931\" alt=\"Reference Phono 3SE\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/re6-ref3phono-ref160M-BW.webp?v=1761649932\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-Ref3-Phono.webp?v=1761649928\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e±.2 dB of RIAA, 10 Hz to 60kHz; 3 dB points below 0.3Hz and above 300 kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDistortion\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .002% at 1.0V RMS 1kHz output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eSelectable 51 dB (Low) and 73 dB (High) at 1kHz BAL;\u003cbr\u003e\n45 dB (Low) and 67 dB (High) at 1kHz SE. (MC and MM compatible).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e47k Ohms and 100 pF SE.\u003cbr\u003e\nSelectable loads: 1000, 500, 200, 100, 50 Ohms,\u003cbr\u003e\nand Custom.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e400 ohms Balanced, 200 ohms SE.\u003cbr\u003e\nRecommended load 50k-100k Ohms and 100 pF.\u003cbr\u003e\n(10k Ohms minimum and 2000 pF maximum).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePhono Equalization\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(selectable) RIAA, Columbia, and Decca.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eMaximum Input\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e250 mV RMS at 1kHz (680 mV RMS at 10kHz) – Low Gain\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRated Outputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 0.5% THD at 1kHz)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eControls\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e6 Push Buttons:  Power, Menu, Option, Enter, Input, Mute\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supplies\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eElectronically regulated low and high voltage supplies.  Automatic 2 minute warm-up\/brown-out mute.\u003cbr\u003e\nLine regulation better than .01%.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e0.28 µV equivalent input noise, IHF weighted.\u003cbr\u003e\nShorted (Low Gain) input (71 dB below 1mV 1kHz input).\u003cbr\u003e\n0.082 µV equivalent input noise (High Gain).\u003cbr\u003e\n(62 dB below 0.1 mV 1kHz input).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Complement\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(6)-6H30P dual triodes, plus (1 each) 6550WE\u003cbr\u003e\nand 6H30P in power supply\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100-135VAC 60Hz (200-270VAC 50\/60Hz) 130 watts.  Standby: 2 watts.\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 19” (48 cm)\u003cbr\u003e\nHeight 7.8” (19.8 cm)\u003cbr\u003e\nDepth 16.5” (41.9 cm)\u003cbr\u003e\nHandles extend 1.6” (4 cm) forward of the front panel.\u003cbr\u003e\nWeight: 36.5 lbs. (16.6 kg) Net; 53 lbs. (24 kg) Shipping.\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320364073109,"sku":"13626","price":22500.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43320364105877,"sku":"13627","price":22500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/products\/Product-Ref-Phono-3-Front_jpg.webp?v=1679430000"},{"product_id":"dac9","title":"Audio Research DAC9","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/DAC9-HD.webp?v=1761445144\" alt=\"DAC9 Tube Digital to Analog Converter\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; right:100px; text-align:right;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        DAC9\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        TUBE DIGITAL TO ANALOG CONVERTER\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003c!-- Left image --\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/DAC9-2-uai-900x600.webp?v=1761445144\" alt=\"Audio Research DAC\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Right text --\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Digital that sounds like analog\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        Digital advances quickly and Audio Research continues to stay at the performance forefront.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        Our perspective and love for analog reproduction helps make our digital components sound superior musically. \n        The DAC9 is a vacuum-tube analog section combined with the latest digital design, capable of decoding DSD music files \n        and PCM files up to 384kHz.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        Selectable digital filters \u0026amp; quad D-A converters\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n        Audio Research designed two separate data paths to the DAC9's D-A converters: one for PCM files, and another to handle serial DSD files at 1x and 2x DSD clock rates. This assures proper integer decoding eliminating interpolation distortion errors that degrade sonic purity. Native sample-rate upsampling is available for all inputs, up to 384kHz for non-DSD (PCM) music files.\u003cbr\u003e\nSelectable digital filters are available for customization. An asynchronous USB input, along with four galvanically isolated SPDIF inputs, assures all of your digital sources will integrate with the DAC9. We pioneered using quad D-A converters, with each channel using dual stereo DACs running in mono to increase dynamic range and lower the noise floor.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Dac9-3-uai-900x600.webp?v=1761445144\" alt=\"Audio Research DAC\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/1_a8b4478a-faf5-434a-868f-e02313de01e0.png?v=1761635463\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The digital side mates to a vacuum-tube analog section that uses a pair of 6H30 dual triode tubes. The DAC9 is a balanced design with a Class-A, zero feedback analog section with no capacitive coupling.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        Like other products that have preceded it, the DAC9 combines remarkable resolution with relaxed musicality. Audio Research’s sonic legacy—clarity, dynamics, dimensionality, and musical authority—are obvious and thoroughly engaging.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/DAC9-insides.webp?v=1761445144\" alt=\"Audio Research DAC\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#fff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Dac-4-uai-770x513.webp?v=1761445144\" alt=\"Audio Research DAC\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:17px; color:#555; line-height:1.8; margin:0;\"\u003e\n        After more than 50 years, our focus remains the advancement of the state-of-the-art in music reproduction. Every component is meticulously hand-crafted and personally auditioned befor it leaves our Minnesota facility.\n      \u003c\/p\u003e\n      \u003cp style=\"font-size:18px; color:#555; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        Our attention to detail, customer service, and product support create unprecedented value. An Audio Research component is more than a purchase, it is an investment.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/DAC9-shelf-BW-1536x1103.webp?v=1761445144\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-DAC9.webp?v=1761445144\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e+\/-0.15dB  20Hz – 20kHz;  +\/-3.0dB 6Hz – 192kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTHD+Noise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .002% at 2V RMS 1kHz Balanced output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eSignal to Noise Ratio\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e\u0026gt;114dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eIntermodulation \u0026amp; Noise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e.001% (SMPTE ratio)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eChannel Separation\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e107dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eIntrinsic Jitter\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e\u0026lt;10pS\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDAC Resolution\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e24 bits\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePush Buttons\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003ePower, Menu, Option, Enter, Input, Mute\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e500 Ohms balanced, 250 Ohms SE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDigital Filter\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eSelectable Fast or Slow algorithms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eUpsampling\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eAll Inputs upsample to 384kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eUSB2.0HS  44.1 to 384kHz, DSD, 2xDSD; RCA, BNC, XLR 44.1 to 192kHz; TOS 44.1 to 96kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRated Outputs\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e3.8V RMS Max Balanced; 1.9V max SE (@ 0dB input)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supplies\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eElectronically-regulated low and high voltage supplies. Line regulation better than .01%\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e103dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Complement\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(2) 6H30 dual triodes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100-125VAC 60Hz (200 – 250VAC 50\/60Hz) 60 watts maximum\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eStandby\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than 2 watt\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth: 19″ (48 cm)\nHeight: 7″ (17.8 cm)\u003cbr\u003e\nDepth: 15.5″ (39.4 cm)\u003cbr\u003e\nHandles extend 1.50″ (3.8 cm) forward of the front panel.\u003cbr\u003e\nWeight: 32.0 lbs. (14.6 kg) Net; 43.2 lbs. (19.8 kg) Shipping.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320377933973,"sku":"13630","price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Product-DAC9-Front.webp?v=1713787033"},{"product_id":"vt-80se","title":"Audio Research VT80 SE Stereo Amplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/VT80SE-HD-Mobile2.webp?v=1761647982\" alt=\"VT80 SE Stereo Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; right:100px; text-align:right;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        VT80 SE\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Stereo Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:18px; color:#000000; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The VT80SE was created as a flexible, great-sounding amplifier that is easy to enjoy and easy to live with, every day. A direct descendant of our Reference amplifiers that borrows from their acclaimed designs and using many of their parts, the VT80SE sounds like a much larger amplifier with impressive dynamics, control, and resolution.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/VT80SE-6.webp?v=1761647984\" alt=\"VT80 SE Stereo Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Ref160S-8.webp?v=1761645717\" alt=\"VT80 SE Stereo Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\u003ch2 style=\"font-size:32px; color:#b7a06a; font-weight:400; margin-bottom:20px;\"\u003e\n        A fully-balanced design\n      \u003c\/h2\u003e\n      \u003cp style=\"font-size:17px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       A fully-balanced design that uses only two pairs of KT150 output tubes, it can be connected via balanced or single-ended inputs. Operation is carefree; simply drop in the tubes and the VT80SE’s proprietary circuit automatically adjusts for tube wear or powerline fluctuations in real time, making the occasional bias adjustment a thing of the past.\u003cbr\u003e\u003cbr\u003e\nIt also works with other common output tubes like the 6550, KT88 or the KT120. Each output tube is fused, so there are no worries, all you have to do is turn it on and enjoy the music.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n       \u003cp style=\"font-size:18px; color:#ffffff; font-weight:600; margin-bottom:20px; line-height:1.6;\"\u003e\n        The VT80SE will be a revelation in your system. Its natural clarity, coupled to its intoxicating tonal palette and sheer dynamic swing, will bring your music to life.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n   \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/VT80SE-4.webp?v=1761647985\" alt=\"VT80 SE Stereo Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n       \u003cp style=\"font-size:17px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      After more than 50 years, our focus remains the advancement of the state-of-the-art in music reproduction. Every component is meticulously hand-crafted and personally auditioned before it leaves our Minnesota facility.\u003cbr\u003e\u003cbr\u003e\nOur attention to detail, customer service, and product support create unprecedented value. An Audio Research component is more than a purchase, it is an investment.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n   \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/VT80SE-3.webp?v=1761647985\" alt=\"VT80 SE Stereo Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/VT80SE-system-2048x1433.webp?v=1761647985\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-VT80.webp?v=1761647981\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e75 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 75 watts, below 0.05% at 1 watt. (Note that actual power output is dependent upon both line voltage and ‘condition’ i. e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB points) 7Hz to 60kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB points at 1 watt) 0.7Hz to 80kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.4V RMS BAL for rated output. (25dB Bal gain into 8 ohms.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e300K ohms Balanced (150K ohms SE)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e8 ohms, 4 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Regulation\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eApproximately 1.0dB 8 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 8)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOverall Negative Feedback\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e15dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eSlew Rate\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e10 volts\/microsecond\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRise Time\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4.0 microseconds \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eChannel Separation\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e112dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eHum \u0026amp; Noise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e–84dBV weighted, 8 ohms tap\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eSignal to Noise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e112dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eControl\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003ePower on\/off, auto shut-off on\/defeat, Input BAL\/SE, RS232, 12V trigger\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eAmbient Air Temperature\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e30° C (86° F) maximum ambient air temperature\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Supply Energy Storage\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eApproximately 350 joules\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100-125VAC 60Hz (200-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle. Sleep power \u0026lt; 1 watt\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTubes Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 – Matched pair KT150 – Power Output; 2 – 6H30 Driver\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e45.7lbs. (20.7 kg) Net; 60.5 lbs. (27.4 kg)\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003ewidth: 19” (48.3 cm)\u003cbr\u003e\nheight: 10.33” (26.2 cm)\u003cbr\u003e\ndepth: 18.45” (46.8 cm) to chassis , 19.40” (49.3 cm) to terminals\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":43320378687637,"sku":"13614","price":12000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43320378720405,"sku":"13615","price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Product-VT80SE-Front_jpg.webp?v=1714074553"},{"product_id":"audio-research-ls-2-tube-preamplifier","title":"Audio Research LS-2 Tube Preamplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS-2-HD2.webp?v=1775577207\" alt=\"LS-2 Tube Preamplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        LS-2\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Tube Preamplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       \u003cb\u003eInspired by the original LS2 line stage that received numerous awards worldwide in 1992, the modern LS-2 delivers eye-opening performance, and a sense of musical engagement, that was not previously available at its price point.\u003c\/b\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS-3-silver-angled-web.webp?v=1775577208\" alt=\"LS-2 Tube Preamplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS-2-middle-page.webp?v=1775577208\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS3-1.webp?v=1775577208\" alt=\"LS-2 Tube Preamplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n     \u003cb\u003e The LS-2 is a pure tube, zero feedback, pure Class-A design. There are two 6H30 tubes at its heart. It plays big, reproducing the size and space of the recording venue, with pinpoint imaging.\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\nWith great clarity and finesse, the LS-2 possesses a wonderful musicality with the harmonic richness and timbral magic of dual-triode vacuum tubes. There is weight, dynamic swing, with a natural resolution of detail.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n     \u003cb\u003e The chassis, shared with the LS-2, is elegant and modern, while providing a silhouette that is instantly recognizable as an Audio Research.\u003c\/b\u003e\u003cbr\u003e\nAn all-new touch screen display allows for input naming, adjustment of the display intensity and color selection, plus many other functions. The display carries forward the font style of our Reference GhostMeters® for a cohesive look.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS-2-back-web.webp?v=1775577208\" alt=\"LS-2 Tube Preamplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n        \n\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS2-S100.webp?v=1775577208\" alt=\"LS-2 Tube Preamplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-0.3dB 10Hz, -0.3dB 40kHz at rated output\n\u003cbr\u003e\n(Balanced, 100k ohms load)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #ffffff;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eTHD+Noise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e\u0026lt;0.03% at 2V RMS BAL Output, 10Hz-80kHz Unweighted\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-77dBV at Max Volume (99)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eCrosstalk\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-76dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e12 dB Balanced Output\n\u003cbr\u003e\n12 dB SE Output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e25K ohms BAL and SE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e10 ohms BAL, 2a5 ohms SE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eBalanced: Inverting\n\u003cbr\u003e\nSE: Inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e120VAC 60Hz 35W Maximum\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eStandby\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e120VAC 60Hz 4.4W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTubes Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 x 6H30\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 19\" (48.26 cm)\n\u003cbr\u003e\nHeight 7” (17.78 cm)\n\u003cbr\u003e\nDepth 17.5” (44.45 cm)\n\u003cbr\u003e\nWeight: 33lbs (15kg) Net, 48lbs (21.8kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver \/ DAC and Phono","offer_id":45894419284117,"sku":null,"price":9950.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ DAC Only","offer_id":45901447921813,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Phono Only","offer_id":45901447954581,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ No Add-Ons","offer_id":45901447987349,"sku":null,"price":8450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ DAC and Phono","offer_id":45894419316885,"sku":null,"price":9950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ DAC Only","offer_id":45901448020117,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Phono Only","offer_id":45901448052885,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Add-Ons","offer_id":45901448085653,"sku":null,"price":8450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS2-S100-1536x634_d09b0779-0bd6-487a-bd20-a4e30b4ce220.webp?v=1775578749"},{"product_id":"audio-research-ls-3-solid-state-preamplifier-preorder-now","title":"Audio Research LS-3 Solid State Preamplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/product-page-HD-LS-3_40d8ad09-e244-447f-ba01-db6160f23f98.webp?v=1775579150\" alt=\"LS-3 Solid State Preamplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        LS-3\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Preamplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       \u003cb\u003eInspired by the original LS3 line stage that received numerous awards worldwide in 1992, the modern LS-3 is a solid-state design that utilizes a fully balanced differential JFET input stage, a bipolar transistor-based voltage amp, and Class-A output stages.\u003c\/b\u003e\u003cbr\u003e\nThe signal path is fully dual-mono, with separate power transformers and zero gain-cascaded voltage reference, and linear power supplies that provide low noise and outstanding dynamics.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS-3-silver-angled-web_d2be8274-0559-4bd1-b984-052286c17bc1.webp?v=1775578697\" alt=\"LS-3 Solid State Preamplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS3-2-stack-white-web.webp?v=1775578697\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#000;padding:40px 20px;text-align:center;font-family:Arial,Helvetica,sans-serif\"\u003e\n  \u003cdiv style=\"color:#fff;font-size:18px;letter-spacing:1px;text-transform:uppercase;max-width:1000px;margin:0 auto;line-height:1.5\"\u003e\n    shown with the S-200 power amplifier, the new LS-3 preamplifier showcases the innovative work of our team of solid-state engineers.\n  \u003c\/div\u003e\n  \u003cdiv style=\"height:2px;background:#888;width:80%;margin:25px auto 0 auto\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS3-silver-front-web.webp?v=1775578697\" alt=\"LS-3 Solid State Preamplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n     The chassis is elegant and modern, while providing a silhouette that is instantly recognizable as an Audio Research. An all-new touch screen display allows for input naming, adjustment of the display intensity and color selection, plus many other functions. The display carries forward the font style of our Reference GhostMeters® for a cohesive look.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n     \u003cb\u003e Sources are rendered with a rich tonal balance, speed, dynamics, and a sense of energy that propels the music forward and involves the listener. It also plays big, reproducing the recording space with air, space, and great focus.\u003c\/b\u003e\u003cbr\u003e\nThe LS-2 and LS-3 share the same, beautiful all aluminum chassis that has been carefully designed to offer the stability and rigidity necessary to isolate this circuit for maximum performance.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS3-1_bfbcb808-02f8-4f91-844a-bc7c38119f96.webp?v=1775578697\" alt=\"LS-3 Solid State Preamplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n        \n\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS3-S200.webp?v=1775578697\" alt=\"LS-3 Solid State Preamplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e+\/-0dB 10Hz to 40kHz at rated output (Balanced, 100k ohms load)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #ffffff;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eTHD+Noise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eLess than .007% at 2V RMS BAL output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-75dBV at Max Volume (99)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eCrosstalk\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e-82dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e20 dB Balanced Output\n\u003cbr\u003e\n20 dB SE Output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedanc\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e\t\n25K ohms BAL and SE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e10 ohms BAL, 25 ohms SE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eBalanced: Non-inverting\n\u003cbr\u003e\nSE: Inverting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e120VAC 60Hz 35W Maximum\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eStandby\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4.2W\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 19\" (48.26 cm)\n\u003cbr\u003e\nHeight 7” (17.78 cm)\n\u003cbr\u003e\nDepth 17.5” (44.45 cm)\n\u003cbr\u003e\nWeight: 33lbs (15kg) Net, 48lbs (21.8kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver \/ DAC and Phono","offer_id":45901490847893,"sku":null,"price":9950.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ DAC Only","offer_id":45901490880661,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Phono Only","offer_id":45901490913429,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ No Add-Ons","offer_id":45901490946197,"sku":null,"price":8450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ DAC and Phono","offer_id":45901490978965,"sku":null,"price":9950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ DAC Only","offer_id":45901491011733,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Phono Only","offer_id":45901491044501,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Add-Ons","offer_id":45901491077269,"sku":null,"price":8450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS3-silver-front-web_60d34b03-d44e-46ff-abdf-612ebe8a135f.webp?v=1775583253"},{"product_id":"audio-research-i-70-integrated-amplifier-preorder","title":"Audio Research I\/70 Integrated Amplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-70-HD2_d757d13d-7451-4e1c-b73e-23ba70e10856.webp?v=1775573186\" alt=\"I\/55\nIntegrated Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n       I\/70\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n       Integrated Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/1-70-7-1500px.webp?v=1775573187\" alt=\"I\/70 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n     \u003cb\u003e The I\/70 brings the joy of tube audio playback to those seeking an elevated level of musical performance, combining Audio Research separates in a single elegant, compact package.\u003c\/b\u003e\u003cbr\u003e\nThe I\/70’s visual design takes cues directly from the REF330M. Black or silver anodized top and bottom plinths mate with a fully enclosed transformer array topped with machined aluminum, mesh, and badging inspired by the 330M. A full mesh wrap around the bottom chassis and an additional bottom plinth complete the I\/70’s upscale look.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n  \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      The beauty continues inside. The same output transformer used in the famed Reference 75 amplifier, combined with four KT120 output tubes, produce 70 watts per channel. There is dynamic swing, a sense of command, control and resolution that were previously unimagined in this category.\u003cbr\u003e\u003cbr\u003e\n\u003cb\u003eAuto-bias ensures maximum performance daily with no extra effort from the listener.\u003cbr\u003e\u003cbr\u003e\nThe I\/70 sounds like a big amp. Go ahead, use it with your favorite floor-standing speakers and hear what a great tube system can bring to your music.\u003c\/b\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/1-70-4-1500px.webp?v=1775573187\" alt=\"I\/70 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/1-70-6-1500px-1204x1536.webp?v=1775573187\" alt=\"I\/70 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:20px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      The I\/70 integrated amp has independent tube preamplifier and tube amplifier sections, providing flexibility with a set of stereo preamplifier outputs. While we suspect very few listeners will pair it with an external power amp, many will need this feature to feed powered subwoofers that offer only low-level inputs.\u003cbr\u003e\u003cbr\u003e\nThe active preamplifier section offers a wide range of gain settings, now with a 75-step volume control. This is especially helpful with recordings that are cut at a low gain setting for wide dynamic range.\u003cbr\u003e\u003cbr\u003e\n\u003cb\u003eThe headphone output is driven by the KT120 output tubes. It was designed for high quality headphones, able to provide the best possible personal listening experience.\u003c\/b\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n   \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:20px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      The DAC card’s AKM Velvet Sound DAC chip provides high resolution formats over USB, Optical, Coax, and Bluetooth. All are upsampled. The result is fine resolution, great transparency, and tonal purity that is rarely heard outside of the finest separate DACs.\u003cbr\u003e\u003cbr\u003e\nThere are three sets of single-ended inputs and one set of Balanced XLR inputs. The optional phono card has both MC and MM gain settings, controlled via the I\/70 remote.  MC loading is also adjustable, from 50 to 1k ohms.\u003cbr\u003e\u003cbr\u003e\n\u003cb\u003eThe I\/70 delivers the punch, detail and musicality that evoke the performance of our larger separates. It continues the Audio Research heritage, built by hand in our Minnesota facility, twice tested, and individually auditioned in our reference system.\u003c\/b\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-70-Headphones.webp?v=1775573187\" alt=\"I\/70 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \n \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/1-70-3-1500px.webp?v=1775573187\" alt=\"I\/70 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-70-1-1500px-1.webp?v=1775573187\" alt=\"I\/70 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-70-lower-page.webp?v=1775573187\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-I50_10c39a9a-043f-4e58-9e14-434bec4c4c14.webp?v=1775573185\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e70 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% per channel, below 0.1% at 1 watt (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical).\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e (-3dB points) 10Hz to 22kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e (-3dB points at 1 watt) 7Hz to 30kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.25V RMS for rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100K ohms Balanced, 48K ohms Single Ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100K ohms Balanced, 50K ohms SE\u003cbr\u003e\n8 Inputs – 4 balanced, 4 single-ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e8 ohms, 4 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-130VAC 60Hz (210-250VAC 50Hz)\n\u003cbr\u003e\n420 watts at rated output, 220 watts at “idle.”\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 matched pair KT120; 3-6922 (1 input, 2 driver)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 16.5” (42 cm)\n\u003cbr\u003e\nHeight 8.25” (21 cm)\n\u003cbr\u003e\nDepth 13.5” (34 cm)\n\u003cbr\u003e\nWeight: 55 lbs (25 kg); 66 lbs (30 kg) shipping weight\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Audio Research Corporation","offers":[{"title":"Silver \/ Add Phono Module \/ Add DAC Module","offer_id":45901578010773,"sku":"13618","price":11450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Add Phono Module \/ Add DAC Module","offer_id":45901578076309,"sku":"13620","price":11450.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ No Phono \/ Add DAC Module","offer_id":45901578207381,"sku":"13633","price":10950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Phono \/ Add DAC Module","offer_id":45901578272917,"sku":"13635","price":10950.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Add Phono Module \/ No DAC","offer_id":45901578403989,"sku":"13639","price":10950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Add Phono Module \/ No DAC","offer_id":45901578469525,"sku":"13641","price":10950.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ No Phono \/ No DAC","offer_id":45901578600597,"sku":"13645","price":9950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No Phono \/ No DAC","offer_id":45901578666133,"sku":"13647","price":9950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-70-1-1500px-1_177cd086-b7c6-494e-b259-823e15a86334.webp?v=1775577239"},{"product_id":"audio-research-s-100-power-amplifier-preorder","title":"Audio Research S-100 Power Amplifier - Preorder!","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/product-page-HD-S-100.webp?v=1775668190\" alt=\"S-100 Power Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        S-100\n\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Stereo Power Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-100-front-web.webp?v=1775668191\" alt=\"S-100 Power Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       \u003cb\u003eOur founder Bill Johnson demanded that solid state designs never fail to engage the listener. In this way, they were to follow the north star of our Reference Tube Amplifiers. Fulfilling this demand, the S-100 solid state amplifier defies the customary limitations to musical expression and purity that otherwise plague this class of product.\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\nLike the S-200, the S-100 is a pure Class A\/B design, on a dual mono platform. Despite being scaled down from its larger sibling, the S-100 is conservatively rated and doubles into 4 ohms via dual toroidal transformers and a fully balanced stereo circuit. Once again, bipolar transistors were chosen over MOSFETs for their purity, transparency, and better dynamics.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003eBeginning with a beautifully machined aluminum chassis in either black or silver anodized finish, S-series amplifiers nod to the classic Audio Research design character, but from a sleeker and more modern angle, with custom machined heat sinks and no visible fasteners from the front or top.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-100-side.webp?v=1775668191\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-100-back-web.webp?v=1775668191\" alt=\"S-100 Power Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       The S-100 and S-200 amplifiers represent our latest and most advanced entries into solid-state amplifier design. After all the measurements and bench testing, every product is proofed by ear, as it has been for decades. All of our S Series amplifiers are produced in our Minnesota facility alongside our Reference Tube Amplifiers.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-100-midpasgr-mob.webp?v=1775668191\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Munich-2025-2.webp?v=1775668192\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"background:#000;padding:40px 20px;text-align:center;font-family:Arial,Helvetica,sans-serif\"\u003e\n  \u003cdiv style=\"color:#fff;font-size:18px;letter-spacing:1px;text-transform:uppercase;max-width:1000px;margin:0 auto;line-height:1.5\"\u003e\n    The S-100 and LS-2 Global Premier at Munich 2025\n  \u003c\/div\u003e\n  \u003cdiv style=\"height:2px;background:#888;width:80%;margin:25px auto 0 auto\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100 Watts channel into 8 ohms\n\u003cbr\u003e\n200 Watts channel into 4 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #ffffff;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eTHD\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e\u0026lt;.1% from 0.25W to rated output into 8 ohms @ 1Khz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eInput Sensitiviy\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.4V RMS Balanced for rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100kΩ Balanced or Single-Ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e26dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.8VRMS for rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e\u0026lt;60µV output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e+\/- 0.1db from 20Hz to 20KHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDamping Factor\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e?? from 20Hz to 1KHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e@120VAC\n\u003cbr\u003e\nStandby: 0.25W. On, idle: 48W\n\u003cbr\u003e\nRated output: 475W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 19\" (48.26 cm)\n\u003cbr\u003e\nHeight 7” (17.78 cm)\n\u003cbr\u003e\nDepth 17.5” (44.45 cm)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eWeigh\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e41lbs (19kg) Net, 63lbs (28.5kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":45973428338837,"sku":"13618","price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45973428371605,"sku":"13620","price":9450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-100-back-web_5575884f-c2d8-4f60-b97e-e6ad1cc5435e.webp?v=1775668952"},{"product_id":"audio-research-s-200-power-amplifier-preorder","title":"Audio Research S-200 Power Amplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/product-page-HD-S200.webp?v=1775669356\" alt=\"S-200 Power Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        S-200\n\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Stereo Power Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-200-4.webp?v=1775669358\" alt=\"S-200 Power Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       The S-100 and S-200 amplifiers represent our latest and most advanced entries into solid-state amplifier design. S-200 is a pure Class A\/B design, with muscular linear power supplies. Inside you’ll find a truly dual mono platform. Beyond the AC input are dual toroidal transformers feeding fully balanced stereo circuits.\u003cbr\u003e\u003cbr\u003e\n\u003cb\u003eBipolar transistors were chosen over MOSFETs for their purity, transparency, and better dynamics.\u003c\/b\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/LS3-2-stack-white-web_154474f5-5f85-4a18-b416-03e8f73a29b8.webp?v=1775669359\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv style=\"background:#000;padding:40px 20px;text-align:center;font-family:Arial,Helvetica,sans-serif\"\u003e\n  \u003cdiv style=\"color:#fff;font-size:18px;letter-spacing:1px;text-transform:uppercase;max-width:1000px;margin:0 auto;line-height:1.5\"\u003e\n   shown with the LS-3 preamplifier, the new S-200 power amplifier showcases the innovative work of our team of solid-state engineers.\n  \u003c\/div\u003e\n \u003c\/div\u003e\n\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003eBeginning with a beautifully machined aluminum chassis in either black or silver anodized finish, S-series amplifiers nod to the classic Audio Research design character, but from a sleeker and more modern angle, with custom machined heat sinks and no visible fasteners from the front or top.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-200-1.webp?v=1775669358\" alt=\"S-200 Power Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-200-3.webp?v=1775669358\" alt=\"S-200 Power Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#000000; line-height:1.8; margin:0;\"\u003e\n       After all the measurements and bench testing, every product is proofed by ear, as it has been for decades. All of our S Series amplifiers are produced in our Minnesota facility alongside our Reference Tube Amplifiers.\u003cbr\u003e\u003cbr\u003e\n\u003cb\u003eThe S-200 sports power output meters in the style of ARC’s modern meter designs, albeit on a solid black background rather than the transparency of the Reference amplifiers’ Ghost Meters®.\n\u003c\/b\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-200-midpage.webp?v=1775669358\" alt=\"S-200 Power Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n    \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-200-2.webp?v=1775669359\" alt=\"S-200 Power Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-200-5.webp?v=1775669359\" alt=\"S-200 Power Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"height:2px;background:#888;width:80%;margin:25px auto 0 auto\"\u003e\u003c\/div\u003e\n\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e200 Watts channel into 8 ohms\n\u003cbr\u003e\n400 Watts channel into 4 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #ffffff;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eTHD\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e\u0026lt;.1% from 0.25W to rated output into 8 ohms @ 1Khz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eInput Sensitiviy\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.8V RMS for rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100kΩ Balanced or Single-Ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eGain\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.8VRMS for rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eNoise\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e+\/- 0.1db from 20Hz to 20KHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDamping Factor\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e300 from 20Hz to 1KHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e@120VAC\n\u003cbr\u003e\nStandby: 0.25W. On, idle: 48W\n\u003cbr\u003e\nRated output: 475W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 19\" (48.26 cm)\n\u003cbr\u003e\nHeight 7” (17.78 cm)\n\u003cbr\u003e\nDepth 17.5” (44.45 cm)\n\u003cbr\u003e\nWeight: 41lbs (19kg) Net, 63lbs (28.5kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Silver","offer_id":45996608618645,"sku":"13618","price":12950.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45996608651413,"sku":"13620","price":12950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/S-200-3_3ee04762-494c-4b54-86a4-63daeb3e0dfa.webp?v=1775669894"},{"product_id":"audio-research-d-80-power-amplifier-preorder","title":"Audio Research D-80 POWER AMPLIFIER - Preorder!","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/D-80-HD.webp?v=1775550948\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        D-80\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n        Stereo Power Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n       \u003cb\u003eThe D-80 tube amplifier offers a wide and rich tonal palette, high resolution, and musical power in an elegant design that draws from our range of Reference tube amplifiers.\u003c\/b\u003e\u003cbr\u003e\nThe prefix \"D\" has been associated with legendary Audio Research amplifiers that established the high-performance amplifier market, so this new model carries the responsibility to continue forward the classic performance and gravitas for which its ancestors are known. The D-80 delivers.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/D-80-2.webp?v=1775550949\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/D-80-3.webp?v=1775550949\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      The foundation for the D-80's design is taken directly from our Reference 80S stereo tube amplifier. A pair of KT150s per channel are part of a fully balanced, differential signal path. Internal components were chosen to maximize tonal density, bass control, and the expansiveness of the recording space, but in a more economical form than can be achieved by the Reference 80S.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden; background-color:#000000;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/D-80-midpage.webp?v=1775550949\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"background:#000;padding:40px 20px;text-align:center;font-family:Arial,Helvetica,sans-serif\"\u003e\n  \u003cdiv style=\"color:#fff;font-size:18px;letter-spacing:1px;text-transform:uppercase;max-width:1000px;margin:0 auto;line-height:1.5\"\u003e\n    A CLASSICALLY BEAUTIFUL AMPLIFIER SETTING A NEW BENCHMARK FOR VACUUM-TUBE PERFORMANCE IN ITS PRICE RANGE\n  \u003c\/div\u003e\n  \u003cdiv style=\"height:2px;background:#888;width:80%;margin:25px auto 0 auto\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      The D-80 is a full pentode design. To maintain simplicity, and with the expectation that most listeners will pair the D-80 with a balanced preamplifier with XLR outputs, this amplifier has only balanced XLR inputs. 4-,8-, and 16-ohm speaker taps allow proper loudspeaker matching. The output of the D-80 is fully balanced, driving both loudspeaker legs.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/D-80-1.webp?v=1775550949\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/D-80-4.webp?v=1775550949\" alt=\"D-80 POWER AMPLIFIER\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      Auto-bias automatically adjusts the D-80's output tube bias continuously, in real time, adjusting for line voltage and tube age, so great sound is consistent every day. Like all Audio Research products, it is entirely built in our Minnesota facility, tested twice, and individually auditioned in our reference system.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003ePower Output: 70 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #ffffff;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB points) 7Hz to 68kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e(-3dB points at 1 watt) 0.7Hz to 94kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms). RMS SE for rated output.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e300K ohms Balanced (75K ohms SE)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4, 8, 16 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Regulation\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eApproximately 1.0dB 16 Ohm Load to Open Circuit (Damping factor approximately 8)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOverall Negative Feedback\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e15dB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eSlew Rate\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e10 volts\/microsecond\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eRise Time\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e4.0 microseconds \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-130VAC 60Hz (210-250VAC 50Hz) 420 watts at rated output. 221 watts at “idle”, 3.6 watts off Units for Japan: 100VAC 50\/60Hz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTubes Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 matched pair KT150 (Power output V1-V4); 2 6H30 (Gain stage V5, V6)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #ffffff;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e62 lbs. (28.2 kg) Net; 73 lbs. (32.7 kg) Shipping\u003c\/td\u003e\n    \u003c\/tr\u003e\n   \n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 18.5” (47 cm) chassis; 19.0” (48.26 cm) faceplate.\u003cbr\u003e\nHeight 10.5” (26 cm)\u003cbr\u003e\nDepth 18.5” (47 cm)\u003cbr\u003e\nWith handles \u0026amp; connectors: 21” (53.3 cm)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n","brand":"Audio Research Corporation","offers":[{"title":"Default Title","offer_id":46500322345109,"sku":null,"price":12950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/D-80-1_21c35453-1220-4f7a-98bd-db54d2bb4f60.webp?v=1775572023"},{"product_id":"audio-research-i-55-integrated-amplifier","title":"Audio Research I\/55 Integrated Amplifier","description":"\u003c!-- Hero Section --\u003e\n\u003cdiv class=\"product-hero\" style=\"margin:0; padding:0;\"\u003e\n  \u003cdiv class=\"hero-inner\" style=\"position: relative; margin:0; padding:0; overflow:hidden;\"\u003e\n    \u003cimg class=\"hero-image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-HD2_d2443c5c-32a3-4de6-bc4d-f22b6b0b9d97.webp?v=1775572043\" alt=\"I\/55\nIntegrated Amplifier\" style=\"width:100%; height:auto; display:block; margin:0; padding:0;\"\u003e\n    \n    \u003c!-- Text on image --\u003e\n    \u003cdiv class=\"hero-text\" style=\"position:absolute; bottom:60px; left:100px; text-align:left;\"\u003e\n      \u003ch1 class=\"title\" style=\"margin:0 0 10px 0; font-size:60px; font-weight:400; color:#d9caa7; letter-spacing:1px;\"\u003e\n        I\/55\n\n      \u003c\/h1\u003e\n      \u003cp class=\"subtitle\" style=\"margin:0; font-size:20px; text-transform:uppercase; color:#ffffff; letter-spacing:2px; opacity:0.9;\"\u003e\n       Integrated Amplifier\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Second Section --\u003e\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-4_5e04c383-6899-46bd-af25-8cf0b814454c.webp?v=1775572044\" alt=\"I\/55 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      \u003cb\u003eThe 1\/55 takes advantages of new features and advancements from the 1\/70 to create a worthy successor to the 1\/50.\u003c\/b\u003e\u003cbr\u003e\n1\/55 imports all of the functionality of the 1\/70 into a chassis that maintains the look and power output of the 1\/50.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#000000; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n  \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n      \u003cp style=\"font-size:20px; color:#ffffff; line-height:1.8; margin:0;\"\u003e\n      The foundation is an all-tube amplification circuit using two matched sets of 6550 power tubes, fed by 6922 input tubes. The traditional combination of power and grace for which Audio Research is renowned is instantly recognizable even in this compact model. Challenge the 1\/55 and be surprised by its depth of bass and dynamic expression. Two Lexie TubesⓇ provide display information for input selection and volume.\u003cbr\u003e\u003cbr\u003e\nChief among the improvements from 1\/50 to 1\/55 is the addition of auto-bias. This keeps the output tubes in their optimal operating range for the life of the tubes.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-2_9b909ac4-a19a-49c0-8c0b-ac805fb17cff.webp?v=1775572044\" alt=\"I\/55 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  display: flex;\n  justify-content: center;\n  width: 100%;\n  background-color: #000;\n  margin: 0;\n  padding: 0;\n\"\u003e\n  \u003cdiv style=\"\n    position: relative;\n    width: 100%;\n    max-width: 1600px;\n    overflow: hidden;\n    margin: 0;\n    padding: 0;\n  \"\u003e\n\n    \u003c!-- Hình nền lớn --\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-midpage1_680356f0-5b3f-4903-9f1c-ca4e9c4e2f4f.webp?v=1775572044\" alt=\"Background\" style=\"\n        width: 100%;\n        height: auto;\n        display: block;\n        object-fit: contain; \/* đảm bảo thấy toàn bộ hình *\/\n        margin: 0;\n        padding: 0;\n      \"\u003e\n\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Responsive --\u003e\n\u003cstyle\u003e\n@media (max-width: 900px) {\n  img[alt='Logo'] {\n    width: 35% !important;\n  }\n}\n\u003c\/style\u003e\n\n\u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; align-items:center; max-width:1600px; width:100%; margin:0 auto;\"\u003e\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-3_9d8fd904-bf90-4140-9ddd-de02ab7b57ad.webp?v=1775572044\" alt=\"I\/55 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:20px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      The 1\/55 integrated amp has independent tube preamplifier and tube amplifier sections, providing flexibility with a set of stereo preamplifier outputs. While we suspect very few listeners will pair it with an external power amp, many will need this feature to feed powered subwoofers that offer only low-level inputs.\u003cbr\u003e\u003cbr\u003e\nThe active preamplifier also offers a much wider range of gain setting compared to the passive preamp on board the 1\/50. This is especially helpful with recordings that are cut at a low gain setting for wide dynamic range. Despite its identical power rating to the 1\/50, the 1\/55 will offer additional output due to both additional gain and higher headroom in its preamplifier section.\u003cbr\u003e\u003cbr\u003e\n\u003cb\u003eThe headphone output is driven by the 6550 output tubes. It was designed for high quality headphones, able to provide the best possible personal listening experience.\u003c\/b\u003e\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n   \u003cdiv style=\"display:flex; justify-content:center; width:100%; background-color:#ffffff; padding:0; margin:0;\"\u003e\n  \n    \u003cdiv style=\"flex:1 1 50%; padding:40px; box-sizing:border-box;\"\u003e\n\n      \u003cp style=\"font-size:20px; color:#000000; line-height:1.8; margin:0;\"\u003e\n      The DAC card’s AKM Velvet Sound DAC chip provides high resolution formats over USB, Optical, Coax, and Bluetooth. All are upsampled. The result is fine resolution, great transparency, and tonal purity that is rarely heard outside of the finest separate DACs.\u003cbr\u003e\u003cbr\u003e\nThere are three sets of single-ended inputs and one set of Balanced XLR inputs. The optional phono card has both MC and MM gain settings, controlled via the I\/55 remote.  MC loading is also adjustable, from 50 to 1k ohms.\n      \u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003cdiv style=\"flex:1 1 50%; padding:0; box-sizing:border-box;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-1_a33ee363-eca2-4a5c-9ed3-32288b661751.webp?v=1775572044\" alt=\"I\/55 Integrated Amplifier\" style=\"width:100%; height:auto; display:block; border-radius:0; margin:0; padding:0;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \n\n\u003cdiv style=\"\n  background-color: #ffffff;\n  width: 100%;\n  display: flex;\n  justify-content: center;\n  padding: 40px 0;\n  margin: 0;\n\"\u003e\n  \u003cdiv style=\"\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 25px;\n    max-width: 1600px;\n    width: 100%;\n    padding: 0 20px;\n    box-sizing: border-box;\n  \"\u003e\n\n    \u003c!-- Hình 1 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Sil-front-uai-1344x1008.webp?v=1775572044\" alt=\"Product 1\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 2 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Wht-front-uai-1344x1008.webp?v=1775572044\" alt=\"Product 2\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 3 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-BLK-front-uai-1344x1008.webp?v=1775572043\" alt=\"Product 3\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 4 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Red-front-uai-1344x1008.webp?v=1775572044\" alt=\"Product 4\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 5 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Blu-front-uai-1344x1008.webp?v=1775572043\" alt=\"Product 5\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hình 6 --\u003e\n    \u003cdiv style=\"display:flex; justify-content:center; align-items:center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Gld-front-uai-1344x1008.webp?v=1775572044\" alt=\"Product 6\" style=\"width:100%; height:auto; display:block; border-radius:8px;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Responsive --\u003e\n\u003cstyle\u003e\n@media (max-width: 900px) {\n  div[style*='grid-template-columns'] {\n    grid-template-columns: repeat(2, 1fr) !important;\n  }\n}\n@media (max-width: 600px) {\n  div[style*='grid-template-columns'] {\n    grid-template-columns: 1fr !important;\n  }\n}\n\u003c\/style\u003e\n        \n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I-50-midpage2.webp?v=1775572044\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"\n  max-width:1600px;   \/* Giới hạn chiều rộng tối đa *\/\n  margin:0 auto;      \/* Căn giữa hình *\/\n  overflow:hidden;    \/* Ẩn phần vượt khung (nếu có) *\/\n  background-color:#000; \/* Tuỳ chọn: nền đen để làm nổi hình *\/\n\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Line-elevations-I50_1.webp?v=1775572043\" alt=\"Product Banner\" style=\"\n      width:100%;         \/* Cho hình tự giãn đầy khung *\/\n      height:auto;        \/* Giữ tỉ lệ hình *\/\n      display:block;      \/* Loại bỏ khoảng trắng dưới ảnh *\/\n    \"\u003e\n\u003c\/div\u003e\n\n  \u003cdiv style=\"max-width: 1000px; margin: 60px auto; font-family: Arial, sans-serif; text-align: center; color: #333;\"\u003e\n  \u003ch2 style=\"font-size: 20px; font-weight: 500; margin-bottom: 25px; letter-spacing: 1px;\"\u003e\n    TECHNICAL SPECIFICATIONS\n  \u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 16px;\"\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right; width: 45%;\"\u003ePower Output\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e50 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% per channel, below 0.1% at 1 watt (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Bandwidth\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e (-3dB points) 10Hz to 22kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eFrequency Response\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e (-3dB points at 1 watt) 7Hz to 30kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Sensitivity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e1.25V RMS for rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100K ohms Balanced, 48K ohms Single Ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Polarity\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eNon-inverting. Balanced input pin 2+ (IEC-268)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eInput Impedance\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e100K ohms Balanced, 50K ohms SE\u003cbr\u003e\n8 Inputs – 4 balanced, 4 single-ended\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eOutput Taps\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e8 ohms, 4 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003ePower Requirements\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e105-130VAC 60Hz (210-250VAC 50Hz) 252 watts at rated output\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f7f7f7;\"\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eTube Required\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003e2 matched pairs 6550WE; 3 x 6922 (1 input, 2 driver)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \n    \u003ctr\u003e\n      \u003ctd style=\"font-weight: 600; padding: 12px 20px; text-align: right;\"\u003eDimensions\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px 20px; text-align: left;\"\u003eWidth 16.5” (42 cm)\u003cbr\u003e\nHeight 7.25” (18 cm)\u003cbr\u003e\nDepth 13.5” (34 cm)\u003cbr\u003e\nWeight: 40 lbs (18.1 kg); 51 lbs (23.1kg) shipping weight\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Audio Research Corporation","offers":[{"title":"White \/ None","offer_id":47235963781269,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"White \/ DAC","offer_id":47357004841109,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"White \/ Phono","offer_id":47357004873877,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"White \/ DAC \u0026 Phono","offer_id":47357004906645,"sku":null,"price":8495.0,"currency_code":"USD","in_stock":true},{"title":"White\/Black \/ None","offer_id":47235963814037,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"White\/Black \/ DAC","offer_id":47357004939413,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"White\/Black \/ Phono","offer_id":47357004972181,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"White\/Black \/ DAC \u0026 Phono","offer_id":47357005004949,"sku":null,"price":8495.0,"currency_code":"USD","in_stock":true},{"title":"Red\/Black \/ None","offer_id":47235963846805,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Red\/Black \/ DAC","offer_id":47357005037717,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Red\/Black \/ Phono","offer_id":47357005070485,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Red\/Black \/ DAC \u0026 Phono","offer_id":47357005103253,"sku":null,"price":8495.0,"currency_code":"USD","in_stock":true},{"title":"Blue\/Black \/ None","offer_id":47235963879573,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Blue\/Black \/ DAC","offer_id":47357005136021,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Blue\/Black \/ Phono","offer_id":47357005168789,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Blue\/Black \/ DAC \u0026 Phono","offer_id":47357005201557,"sku":null,"price":8495.0,"currency_code":"USD","in_stock":true},{"title":"Yellow\/Black \/ None","offer_id":47235963912341,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Yellow\/Black \/ DAC","offer_id":47357005234325,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Yellow\/Black \/ Phono","offer_id":47357005267093,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Yellow\/Black \/ DAC \u0026 Phono","offer_id":47357005299861,"sku":null,"price":8495.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ None","offer_id":47235963945109,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ DAC","offer_id":47357005332629,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Phono","offer_id":47357005365397,"sku":null,"price":7950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ DAC \u0026 Phono","offer_id":47357005398165,"sku":null,"price":8495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/I50-Sil-front-uai-1344x1008_22089508-c71c-486e-a8a2-71831da63c1a.webp?v=1775573036"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/collections\/Product-Ref160M-Front_jpg.webp?v=1714174807","url":"https:\/\/houseofstereo.com\/collections\/audio-research-corporation\/integrated-amplifiers.oembed","provider":"House Of Stereo","version":"1.0","type":"link"}