{"product_id":"grado-epoch4","title":"Grado Epoch4","description":"\u003csection style=\"\n  position: relative;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  background-color: #000;\n  display: flex;\n  align-items: center;\n  justify-content: center;\n\"\u003e\n\n  \u003c!-- Lớp hình ảnh --\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/grado-timbre-master.webp?v=1779031096\" alt=\"Grado Epoch4\" style=\"\n      width: 100%;\n      height: auto;\n      display: block;\n      filter: brightness(80%) blur(1px);\n      transform: scale(1.05);\n    \"\u003e\n\n  \u003c!-- Lớp phủ gradient --\u003e\n  \u003cdiv style=\"\n    position: absolute;\n    top: 0;\n    left: 0;\n    width: 100%;\n    height: 100%;\n    background: linear-gradient(to right, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0) 100%);\n    z-index: 1;\n  \"\u003e\u003c\/div\u003e\n\n  \u003c!-- Lớp text --\u003e\n  \u003cdiv style=\"\n    position: absolute;\n    top: 50%;\n    left: 6%;\n    transform: translateY(-50%);\n    padding: 20px 30px;\n    text-align: center;\n    color: #ffffff;\n    max-width: 600px;\n    z-index: 2;\n  \"\u003e\n\n    \u003ch2 style=\"\n      font-size: 64px;\n      font-weight: 400;\n      font-family: 'Times New Roman', serif;\n      letter-spacing: 1px;\n      margin: 10px 0;\n      line-height: 1.1;\n      color: #ffffff;\n    \"\u003e\n      Epoch4\n    \u003c\/h2\u003e\n  \u003c\/div\u003e\n\n\u003c\/section\u003e\n\n\u003c!-- SECTION 1 --\u003e\n\u003csection style=\"\n  display: flex;\n  justify-content: center;\n  align-items: stretch;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  background-color: #000;\n  color: #fff;\n  font-family: 'Inter', sans-serif;\n\"\u003e\n\n  \u003cdiv style=\"\n    width: 50%;\n    background-color: #0d0d0d;\n    padding: 60px 40px;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    box-sizing: border-box;\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 30px;\n      font-weight: 500;\n      margin-bottom: 25px;\n      line-height: 1.2;\n      color: #ffffff;\n    \"\u003e\n      Description\n    \u003c\/h2\u003e\n    \u003cp style=\"\n      font-size: 16px;\n      line-height: 1.7;\n      color: #ffffff;\n      margin: 0;\n    \"\u003eEpoch4 represents the highest level of performance within the Grado Lineage Series. Developed through decades of cartridge design and refinement, it reflects a continuous pursuit of musical accuracy, control, and resolution.\n\u003cbr\u003e\u003cbr\u003e\nBuilt around Grado’s patented moving iron flux-bridger system, Epoch4 delivers the speed and detail associated with moving coil designs while maintaining the tonal density, stability, and longevity that define Grado cartridges.\n\u003cbr\u003e\u003cbr\u003e\nOffered in both stereo and mono configurations, Epoch4 is designed for systems where nothing is left to chance.\n\n \n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"\n    width: 50%;\n    position: relative;\n    overflow: hidden;\n    display: flex;\n  \"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Lineage.webp?v=1779031096\" alt=\"Grado Epoch4\" style=\"\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- SECTION 2 --\u003e\n\u003csection style=\"\n  display: flex;\n  justify-content: center;\n  align-items: stretch;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  background-color: #000;\n  color: #fff;\n  font-family: 'Inter', sans-serif;\n  border-top: none;\n\"\u003e\n\n  \u003c!-- Cột bên trái: Hình ảnh --\u003e\n  \u003cdiv style=\"\n    width: 50%;\n    position: relative;\n    overflow: hidden;\n    display: flex;\n  \"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/8d62884d82a8--Cartridges-046.webp?v=1779031097\" alt=\"Grado Epoch4\" style=\"\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Cột bên phải: Thông số kỹ thuật --\u003e\n  \u003cdiv style=\"\n    width: 50%;\n    background-color: #0d0d0d;\n    padding: 60px 40px;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    box-sizing: border-box;\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 30px;\n      font-weight: 500;\n      margin-bottom: 25px;\n      line-height: 1.2;\n      color: #ffffff;\n    \"\u003e\n      Specifications\n    \u003c\/h2\u003e\n    \u003cul style=\"\n      font-size: 16px;\n      line-height: 1.7;\n      color: #ffffff;\n      margin: 0;\n      padding-left: 20px;\n      list-style-type: disc;\n    \"\u003e\n      \u003cli\u003eBody - Brazilian Ebony Wood\u003c\/li\u003e\n      \u003cli\u003eCantilever - Sapphire\/Shibata Diamond\u003c\/li\u003e\n      \u003cli\u003eOutput - 1.0mV @ 5 CMV (45 degrees)\u003c\/li\u003e\n      \u003cli\u003eControlled Frequency Response - 5 Hz - 75 KHz\u003c\/li\u003e\n      \u003cli\u003eChannel Separation - Avg. 30db, 10-30K Hz\u003c\/li\u003e\n      \u003cli\u003eInput Load - 10-47k ohms\u003c\/li\u003e\n      \u003cli\u003eInductance - 8mH\u003c\/li\u003e\n      \u003cli\u003eResistance - 95 ohms\u003c\/li\u003e\n      \u003cli\u003eCartridge Weight - 10.5 grams\u003c\/li\u003e\n      \u003cli\u003eTracking Force - 1.6 -1.9 grams\u003c\/li\u003e\n      \u003cli\u003eCompliance - 20 μm\/mN\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection style=\"\n  display: flex;\n  justify-content: center;\n  align-items: stretch;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  background-color: #000;\n  color: #fff;\n  font-family: 'Inter', sans-serif;\n  border-top: none;\n\"\u003e\n  \u003cdiv style=\"\n    width: 50%;\n    background-color: #0d0d0d;\n    padding: 60px 40px;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    box-sizing: border-box;\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 30px;\n      font-weight: 500;\n      margin-bottom: 25px;\n      line-height: 1.2;\n      color: #ffffff;\n    \"\u003e\n      Performance\n    \u003c\/h2\u003e\n    \u003cp style=\"\n      font-size: 16px;\n      line-height: 1.7;\n      color: #ffffff;\n      margin: 0;\n    \"\u003eEpoch4 is a low output moving iron cartridge designed for use with high-gain phono stages.\n\u003cbr\u003e\u003cbr\u003e\nIts presentation is defined by clarity, separation, and control. Detail is revealed without exaggeration, with a top end that remains smooth and composed. The midrange carries natural weight and texture, while low frequencies are delivered with authority and precision.\n\u003cbr\u003e\u003cbr\u003e\nComplex recordings are resolved with ease, maintaining separation and spatial accuracy without collapsing the soundstage. The overall balance allows the character of the recording to come through naturally.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"\n    width: 50%;\n    position: relative;\n    overflow: hidden;\n    display: flex;\n  \"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Cartridges-008_c1fd4e6f-cc93-4495-82ad-446b03cac946.webp?v=1779031097\" alt=\"Grado Epoch4\" style=\"\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n  \u003csection style=\"\n  display: flex;\n  justify-content: center;\n  align-items: stretch;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  color: #fff;\n  font-family: 'Inter', sans-serif;\n  border-top: none;\n\"\u003e\n\n\u003cdiv style=\"\n    width: 50%;\n    position: relative;\n    overflow: hidden;\n    display: flex;\n  \"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Cartridges-011_191b0a5b-73f9-46a6-9bcf-f41e177ecf22.webp?v=1779031097\" alt=\"Grado Epoch4\" style=\"\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n    \n  \u003cdiv style=\"\n    width: 50%;\n    padding: 60px 40px;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    box-sizing: border-box;\n    text-align: right;\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 30px;\n      font-weight: 500;\n      margin-bottom: 25px;\n      line-height: 1.2;\n      color: #000000;\n      \n    \"\u003e\n      Flux-Bridger Moving Iron Design\n    \u003c\/h2\u003e\n    \u003cp style=\"\n      font-size: 16px;\n      line-height: 1.7;\n      color: #000000;\n      margin: 0;\n    \"\u003eAll Grado cartridges utilize a moving iron design built on Joseph Grado’s patented flux-bridger principle.\n\u003cbr\u003e\u003cbr\u003e\nThis approach allows the cartridge to generate a precise signal with extremely low moving mass, while keeping the coil structure fixed. The result is a presentation that combines speed, control, and harmonic integrity without the fragility often associated with traditional moving coil systems.\n\u003cbr\u003e\u003cbr\u003e\nThe design also ensures long-term consistency, maintaining performance over time without degradation of the internal signal path.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/section\u003e\n\n  \u003csection style=\"\n  display: flex;\n  justify-content: center;\n  align-items: stretch;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  background-color: #000;\n  color: #fff;\n  font-family: 'Inter', sans-serif;\n  border-top: none;\n\"\u003e\n  \u003cdiv style=\"\n    width: 50%;\n    background-color: #0d0d0d;\n    padding: 60px 40px;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    box-sizing: border-box;\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 30px;\n      font-weight: 500;\n      margin-bottom: 25px;\n      line-height: 1.2;\n      color: #ffffff;\n    \"\u003e\n      Diamond \u0026amp; Cantilever\n    \u003c\/h2\u003e\n    \u003cp style=\"\n      font-size: 16px;\n      line-height: 1.7;\n      color: #ffffff;\n      margin: 0;\n      margin-bottom: 25px;\n    \"\u003eEpoch4 features a nude Shibata diamond mounted to a sapphire cantilever.\n\u003cbr\u003e\u003cbr\u003e\nThe Shibata profile is highly effective at retrieving detail from the groove, offering exceptional contact and resolution while maintaining a natural, unforced presentation. Paired with a sapphire cantilever—known for its rigidity and resistance to deformation—the system delivers clarity, extension, and stability across the frequency range.\n    \u003c\/p\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"\n    width: 50%;\n    position: relative;\n    overflow: hidden;\n    display: flex;\n  \"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Cartridges-012_52be1b4e-0e5e-4670-aa06-4f511016cce1.webp?v=1779031097\" alt=\"Grado Epoch4\" style=\"\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n  \u003csection style=\"\n  display: flex;\n  justify-content: center;\n  align-items: stretch;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  background-color: #000;\n  color: #fff;\n  font-family: 'Inter', sans-serif;\n  border-top: none;\n\"\u003e\n\n\u003cdiv style=\"\n    width: 50%;\n    position: relative;\n    overflow: hidden;\n    display: flex;\n  \"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Cartridges-011_191b0a5b-73f9-46a6-9bcf-f41e177ecf22.webp?v=1779031097\" alt=\"Grado Epoch4\" style=\"\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv style=\"\n    width: 50%;\n    background-color: #ffffff;\n    padding: 60px 40px;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    box-sizing: border-box;\n    text-align: right;\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 30px;\n      font-weight: 500;\n      margin-bottom: 25px;\n      line-height: 1.2;\n      color: #000000;\n    \"\u003e\n      Coil \u0026amp; Internal Structure\n    \u003c\/h2\u003e\n    \u003cp style=\"\n      font-size: 16px;\n      line-height: 1.7;\n      color: #000000;\n      margin: 0;\n    \"\u003eThe internal signal path is built using ultra-high purity OCC copper with gold plating, chosen for its conductivity and long-term reliability.\n\u003cbr\u003e\u003cbr\u003e\nEach cartridge undergoes cryogenic treatment during both component preparation and final assembly, helping to stabilize materials and optimize performance.\n\u003cbr\u003e\u003cbr\u003e\nThe internal structure is carefully damped to reduce unwanted resonance and vibration, allowing the cartridge to extract information from the groove with minimal interference. The result is a signal that remains coherent, balanced, and dynamically responsive.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/section\u003e\n\n\u003csection style=\"\n  display: flex;\n  justify-content: center;\n  align-items: stretch;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  background-color: #000;\n  color: #fff;\n  font-family: 'Inter', sans-serif;\n  border-top: none;\n\"\u003e\n  \u003cdiv style=\"\n    width: 50%;\n    background-color: #0d0d0d;\n    padding: 60px 40px;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    box-sizing: border-box;\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 30px;\n      font-weight: 500;\n      margin-bottom: 25px;\n      line-height: 1.2;\n      color: #ffffff;\n    \"\u003e\n      Housing\n    \u003c\/h2\u003e\n    \u003cp style=\"\n      font-size: 16px;\n      line-height: 1.7;\n      color: #ffffff;\n      margin: 0;\n      margin-bottom: 25px;\n    \"\u003eThe Epoch4 is housed in a Brazilian Ebony wood body.\n\u003cbr\u003e\u003cbr\u003e\nBeyond its visual presence, the wood plays a role in controlling resonance and contributing to the cartridge’s tonal balance. The structure has been refined to reduce mass while improving compatibility across a wider range of tonearms.\n\u003cbr\u003e\u003cbr\u003e\nThe form also improves visibility of the cantilever during setup, allowing for more precise alignment.\n    \u003c\/p\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"\n    width: 50%;\n    position: relative;\n    overflow: hidden;\n    display: flex;\n  \"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Cartridges-016_f126f1c9-a4fd-4b76-8d5f-248be775b4fe.webp?v=1779031097\" alt=\"Grado Epoch4\" style=\"\n        width: 100%;\n        height: 100%;\n        object-fit: cover;\n        display: block;\n      \"\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n  \n\n\u003csection style=\"\n  position: relative;\n  width: 100%;\n  max-width: 1600px;\n  margin: 0 auto;\n  overflow: hidden;\n  font-family: 'Inter', sans-serif;\n  text-align: center;\n  color: #000;\n\"\u003e\n\n  \u003c!-- Hình nền --\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Cartridges-008_c1fd4e6f-cc93-4495-82ad-446b03cac946.webp?v=1779031097\" alt=\"Grado Epoch4\" style=\"\n      width: 100%;\n      height: auto;\n      display: block;\n      filter: brightness(80%) blur(2px);\n      transform: scale(1.05);\n    \"\u003e\n\n  \u003c!-- Lớp phủ mờ --\u003e\n  \u003cdiv style=\"\n    position: absolute;\n    top: 0;\n    left: 0;\n    width: 100%;\n    height: 100%;\n    background: rgba(255,255,255,0.2);\n    z-index: 1;\n  \"\u003e\u003c\/div\u003e\n\n  \u003c!-- Hộp nội dung --\u003e\n  \u003cdiv style=\"\n    position: absolute;\n    top: 50%;\n    left: 50%;\n    transform: translate(-50%, -50%);\n    width: 80%;\n    background: rgba(255, 255, 255, 0.85);\n    padding: 60px 80px;\n    border-radius: 0; \/* Không bo góc *\/\n    z-index: 2;\n    box-shadow: 0 4px 20px rgba(0,0,0,0.2);\n  \"\u003e\n    \u003ch2 style=\"\n      font-size: 38px;\n      font-weight: 500;\n      margin-bottom: 20px;\n    \"\u003e\n      Wood Cartridge Upgrade Program\n    \u003c\/h2\u003e\n    \u003cp style=\"\n      font-size: 18px;\n      line-height: 1.6;\n      margin: 0 auto;\n      max-width: 90%;\n      color: #111;\n    \"\u003eGrado wood body cartridges are supported through our Wood Cartridge Upgrade Program.\n\u003cbr\u003e\u003cbr\u003e\nThis program allows you to move from your current Grado wood cartridge to another model, with a pricing accommodation provided through the program. The program applies exclusively to Grado wood body cartridges, and pricing is based on the model being purchased.\n\u003cbr\u003e\u003cbr\u003e\nFor details and current pricing, please contact us and state the model you are interested in purchasing.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n ","brand":"Grado Labs","offers":[{"title":"Cartridge","offer_id":47359100420245,"sku":null,"price":14141.0,"currency_code":"CAD","in_stock":true},{"title":"with Replacement Stylus","offer_id":47359100453013,"sku":null,"price":24044.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/Lineage_ebf20bd1-59fb-4e11-bfc9-ca7d948dd35b.webp?v=1779032698","url":"https:\/\/houseofstereo.com\/en-ca\/products\/grado-epoch4","provider":"House Of Stereo","version":"1.0","type":"link"}