{"product_id":"ps-audio-pmg-m400","title":"PS Audio PMG M400 Monoblock (Pair)","description":"\u003cstyle\u003e\n.product__description:has(\u003e .hos-ps-research){width:100%;max-width:100%;min-width:0;flex:0 0 100%}\n.hos-ps-research{width:100%;min-width:0;container-type:inline-size;--hos-ink:#193443;--hos-gold:#a87731;color:#243b48;font-size:16px;line-height:1.75;overflow-wrap:anywhere}\n.hos-ps-research *{box-sizing:border-box}.hos-ps-research h2,.hos-ps-research h3{color:var(--hos-ink);line-height:1.2;letter-spacing:-.02em}.hos-ps-research h2{font-size:clamp(26px,4cqw,44px);margin:0 0 22px}.hos-ps-research h3{font-size:23px;margin:0 0 14px}.hos-ps-research p{margin:0 0 20px}.hos-ps-research .hos-eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--hos-gold);margin-bottom:14px}\n.hos-ps-research .hos-hero{padding:48px 28px;background:#f3f5f5;border-top:3px solid var(--hos-gold)}.hos-ps-research .hos-lead{font-size:19px;max-width:850px}.hos-ps-research .hos-scope{font-size:14px;border-left:3px solid var(--hos-gold);padding-left:16px}.hos-ps-research .hos-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:30px 0 0}.hos-ps-research .hos-metric{border-top:1px solid #cbd4d8;padding-top:16px}.hos-ps-research .hos-metric strong{display:block;font-size:clamp(19px,3cqw,28px);color:var(--hos-ink);line-height:1.25}.hos-ps-research .hos-metric span{display:block;font-size:13px;margin-top:7px}\n.hos-ps-research .hos-nav{display:flex;flex-wrap:wrap;gap:10px 24px;padding:20px 0;border-bottom:1px solid #d6dfe3}.hos-ps-research a{color:var(--hos-ink);text-underline-offset:4px}.hos-ps-research .hos-section{padding:48px 0;scroll-margin-top:110px}.hos-ps-research .hos-story{display:grid;gap:26px;align-items:center;margin:0 0 44px}.hos-ps-research figure{margin:0;min-width:0}.hos-ps-research img{display:block;width:100%;height:auto;max-height:570px;object-fit:contain;background:#f6f7f7;border-radius:3px}.hos-ps-research figcaption{font-size:12px;color:#58717e;margin-top:10px}.hos-ps-research .hos-cards{display:grid;gap:18px}.hos-ps-research .hos-card{padding:24px;background:#f3f5f5;border-top:2px solid var(--hos-gold)}.hos-ps-research .hos-card h3{font-size:20px}.hos-ps-research .hos-card p{margin:0;font-size:15px}\n.hos-ps-research .hos-specs{border-collapse:collapse;width:100%;table-layout:fixed;font-size:15px;box-shadow:none}.hos-ps-research .hos-specs th,.hos-ps-research .hos-specs td{border:0;border-bottom:1px solid #d6dfe3;padding:15px 12px;text-align:left;vertical-align:top;overflow-wrap:anywhere}.hos-ps-research .hos-specs th{width:36%;font-weight:600;background:#f3f5f5}.hos-ps-research details{border-bottom:1px solid #d6dfe3;padding:18px 0}.hos-ps-research summary{background:#9FBED3!important;color:#193443!important;cursor:pointer;font-weight:600;color:var(--hos-ink);list-style:revert}.hos-ps-research details p{margin:16px 0 0}.hos-ps-research .hos-footer{padding:30px;background:var(--hos-ink);color:white}.hos-ps-research .hos-footer h3,.hos-ps-research .hos-footer a{color:white}.hos-ps-research .hos-note{font-size:12px;color:#58717e;margin-top:18px}.hos-ps-research .hos-related{display:flex;gap:12px 24px;flex-wrap:wrap;margin-top:18px}\n@container(min-width:700px){.hos-ps-research .hos-hero{padding:56px 48px}.hos-ps-research .hos-story{grid-template-columns:1fr 1fr;gap:44px}.hos-ps-research .hos-story:nth-child(even) figure{order:-1}.hos-ps-research .hos-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}\n@container(max-width:420px){.hos-ps-research .hos-hero{padding:32px 18px}.hos-ps-research .hos-metrics{gap:10px}.hos-ps-research .hos-metric span{font-size:11px}.hos-ps-research .hos-specs{font-size:13px}.hos-ps-research .hos-specs th,.hos-ps-research .hos-specs td{padding:12px 8px}}\n\u003c\/style\u003e\u003carticle class=\"hos-ps-research\"\u003e\u003cheader class=\"hos-hero\"\u003e\u003cp class=\"hos-eyebrow\"\u003ePS Audio · amplification · House of Stereo\u003c\/p\u003e\n\u003ch2\u003eCurrent, control, and room to breathe.\u003c\/h2\u003e\n\u003cp class=\"hos-lead\"\u003eThe PMG M400 brings PS Audio’s current-based amplifier architecture to a pair of dedicated monoblocks. Each speaker receives its own chassis, power supply, and amplification path.\u003c\/p\u003e\n\u003cp class=\"hos-scope\"\u003eTwo monoblock amplifiers. Choose the finish for the pair.\u003c\/p\u003e\n\u003cdiv class=\"hos-metrics\"\u003e\n\u003cdiv class=\"hos-metric\"\u003e\n\u003cstrong\u003e200 W\u003c\/strong\u003e\u003cspan\u003eper monoblock into 8 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hos-metric\"\u003e\n\u003cstrong\u003e400 W\u003c\/strong\u003e\u003cspan\u003einto 4 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hos-metric\"\u003e\n\u003cstrong\u003eXLR + RCA\u003c\/strong\u003e\u003cspan\u003eanalog inputs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/header\u003e\u003cnav class=\"hos-nav\" aria-label=\"Product research sections\"\u003e\u003ca href=\"#ps-15416794153109-design\"\u003eDesign\u003c\/a\u003e\u003ca href=\"#ps-15416794153109-setup\"\u003eSystem setup\u003c\/a\u003e\u003ca href=\"#ps-15416794153109-specs\"\u003eSpecifications\u003c\/a\u003e\u003ca href=\"#ps-15416794153109-faq\"\u003eQuestions\u003c\/a\u003e\u003ca href=\"#ps-15416794153109-resources\"\u003eManual \u0026amp; resources\u003c\/a\u003e\u003c\/nav\u003e\u003csection class=\"hos-section\" id=\"ps-15416794153109-design\" aria-label=\"Product design\"\u003e\u003cdiv class=\"hos-story\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hos-eyebrow\"\u003ePMG M400 Monoblock (Pair)\u003c\/p\u003e\n\u003ch3\u003eA signal path built around current\u003c\/h3\u003e\n\u003cp\u003ePS Audio uses a current-based circuit with low feedback and generous Class A bias. Rather than treating rated wattage as the entire story, the design addresses the amplifier’s behavior as the signal changes and the speaker presents a complex load. It is a dedicated analog power amplifier: source selection and listening volume belong to your preamplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ps-audio-pmg-m400-1.png?v=1791665388\" alt=\"PS Audio PMG M400 Monoblock (Pair) manufacturer product photograph 1\" loading=\"lazy\" decoding=\"async\"\u003e\u003cfigcaption\u003ePS Audio PMG M400 Monoblock (Pair) — product view\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hos-story\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"hos-eyebrow\"\u003ePMG M400 Monoblock (Pair)\u003c\/p\u003e\n\u003ch3\u003ePower behind the performance\u003c\/h3\u003e\n\u003cp\u003eAn actively regulated supply supports the audio circuitry. Separate left and right chassis allow each channel to work independently and can simplify placement beside the speakers. This listing includes two amplifiers for a stereo system. Leave ventilation space around the enclosure; high-bias amplification produces heat during normal use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/hos-ps-audio-pmg-m400-rear.png?v=1791668492\" alt=\"PS Audio PMG M400 Monoblock (Pair) rear connections\" loading=\"lazy\" decoding=\"async\"\u003e\u003cfigcaption\u003ePS Audio PMG M400 Monoblock (Pair) — rear connections\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003ch3\u003eA closer look at the manufacturer’s measurements\u003c\/h3\u003e\n\u003cp\u003eThis plot is supplied by PS Audio. Read the measurement conditions alongside the trace when comparing specifications; it is not an independent House of Stereo measurement.\u003c\/p\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/hos-ps-audio-pmg-m400-thd.png?v=1791668499\" alt=\"PS Audio PMG M400 Monoblock (Pair) manufacturer distortion versus frequency measurement\" loading=\"lazy\" decoding=\"async\"\u003e\u003cfigcaption\u003ePS Audio supplied distortion measurement plot.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/hos-ps-audio-pmg-m400-thd.png?v=1791668499\" target=\"_blank\" rel=\"noopener\"\u003eOpen the full-size measurement plot\u003c\/a\u003e\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"hos-section\" id=\"ps-15416794153109-setup\"\u003e\u003cp class=\"hos-eyebrow\"\u003eMake it work in your system\u003c\/p\u003e\n\u003ch2\u003eThoughtful setup makes the difference.\u003c\/h2\u003e\n\u003cdiv class=\"hos-cards\"\u003e\n\u003cdiv class=\"hos-card\"\u003e\n\u003ch3\u003eBegin with volume control\u003c\/h3\u003e\n\u003cp\u003eConnect a preamplifier or a correctly configured variable-output source. Start at a low level and use the input type suited to your system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hos-card\"\u003e\n\u003ch3\u003eGive the amplifier room\u003c\/h3\u003e\n\u003cp\u003eLeave ventilation and cable clearance. Check speaker impedance and mains requirements in the manual before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hos-card\"\u003e\n\u003ch3\u003eMatch power to the room\u003c\/h3\u003e\n\u003cp\u003eSpeaker sensitivity, listening distance, and playback level affect useful headroom. Ask House of Stereo to help compare an amplifier with your speakers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"hos-section\" id=\"ps-15416794153109-specs\"\u003e\u003cp class=\"hos-eyebrow\"\u003eThe details that matter\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"hos-specs\"\u003e\n\u003ccaption style=\"text-align:left;margin-bottom:16px\"\u003ePS Audio PMG M400 Monoblock (Pair) — key manufacturer specifications\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRated output into 8 Ω\u003c\/th\u003e\n\u003ctd\u003e200 W per monoblock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRated output into 4 Ω\u003c\/th\u003e\n\u003ctd\u003e400 W per monoblock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInputs\u003c\/th\u003e\n\u003ctd\u003eBalanced XLR and single-ended RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGain\u003c\/th\u003e\n\u003ctd\u003e26.2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInput impedance\u003c\/th\u003e\n\u003ctd\u003e100 kΩ RCA \/ 200 kΩ XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFrequency response\u003c\/th\u003e\n\u003ctd\u003e\u0026lt;10 Hz–80 kHz, ±0.25 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions with feet and binding posts\u003c\/th\u003e\n\u003ctd\u003e17.5 W × 8.75 H × 16.75 D in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e55.8 lb per amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAC supply\u003c\/th\u003e\n\u003ctd\u003eAutomatic 120\/230 V, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIdle consumption\u003c\/th\u003e\n\u003ctd\u003e220 W per amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"hos-note\"\u003eRatings are manufacturer specifications. Check the linked manual for complete operating conditions, regional requirements, and installation instructions.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"hos-section\" id=\"ps-15416794153109-faq\"\u003e\u003cp class=\"hos-eyebrow\"\u003eBefore you choose\u003c\/p\u003e\n\u003ch2\u003eCommon questions\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need a preamplifier?\u003c\/summary\u003e\u003cp\u003eYes, you need a suitable source-selection and volume-control stage. This is a power amplifier, not an integrated amplifier.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre speakers included?\u003c\/summary\u003e\u003cp\u003eNo. This listing covers the amplifier package described above. Speakers and source components are separate.\u003c\/p\u003e\u003c\/details\u003e\u003c\/section\u003e\u003csection class=\"hos-section\" id=\"ps-15416794153109-resources\"\u003e\u003ch2\u003eKeep researching.\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/hos-ps-audio-pmg-m400-owners-guide.pdf?v=1791669589\" target=\"_blank\" rel=\"noopener\"\u003eRead the manufacturer’s owner’s guide (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eExplore the system\u003c\/h3\u003e\n\u003cdiv class=\"hos-related\"\u003e\n\u003ca href=\"\/es-ca\/products\/ps-audio-pmg-signature-preamplifier\"\u003ePMG Signature Preamplifier\u003c\/a\u003e\u003ca href=\"\/es-ca\/products\/ps-audio-aspen-fr20-loudspeaker\"\u003eAspen FR20 speaker pair\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfooter class=\"hos-footer\"\u003e\u003ch3\u003eLet’s make the whole system work together.\u003c\/h3\u003e\n\u003cp\u003eHouse of Stereo can help with component matching, connections, and placement. Tell us what you listen to, what you own, and what you want to improve.\u003c\/p\u003e\n\u003ca href=\"\/es-ca\/pages\/contact-us\"\u003eTalk with House of Stereo\u003c\/a\u003e\u003c\/footer\u003e\u003c\/article\u003e","brand":"PS Audio","offers":[{"title":"Silver","offer_id":67679898927253,"sku":"Pair-PMG-M400-UV-S","price":26045.0,"currency_code":"CAD","in_stock":true},{"title":"Black","offer_id":67679898960021,"sku":"Pair-PMG-M400-UV-B","price":26045.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/7117\/6085\/files\/ps-audio-pmg-m400-1.png?v=1791665388","url":"https:\/\/houseofstereo.com\/es-ca\/products\/ps-audio-pmg-m400","provider":"House Of Stereo","version":"1.0","type":"link"}