{"product_id":"proton-aa-1150-power-amplifier-50w-rms-fully-serviced","title":"Proton AA-1150 Power Amplifier * 50W RMS * Fully Serviced *","description":"\u003ch2 dir=\"ltr\" data-path-to-node=\"2\"\u003eOverview \u0026amp; History\u003c\/h2\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"3\" id=\"p-rc_098e07d32a8eb3cc-182\"\u003e\u003cspan class=\"citation-486\"\u003eIntroduced in \u003c\/span\u003e\u003cb data-path-to-node=\"3\" data-index-in-node=\"14\" class=\"\"\u003e\u003cspan class=\"citation-486\"\u003e1987\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-486\"\u003e, the \u003c\/span\u003e\u003cb data-path-to-node=\"3\" data-index-in-node=\"24\" class=\"\"\u003e\u003cspan class=\"citation-486\"\u003eProton AA-1150\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-486 citation-end-486\"\u003e was manufactured in Taiwan by Fulet Electronics, the OEM manufacturing partner for high-end audio brands like NAD.\u003csup class=\"superscript embedded\" data-turn-source-index=\"1\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan class=\"\"\u003e It gained fame for combining massive analogue VU peak meters with its proprietary \u003c\/span\u003e\u003cb data-path-to-node=\"3\" data-index-in-node=\"236\"\u003eDynamic Power on Demand™ (DPD)\u003c\/b\u003e\u003cspan class=\"\"\u003e circuit architecture:\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"4\"\u003e\n\u003cli id=\"p-rc_098e07d32a8eb3cc-183\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,0,0\" id=\"p-rc_098e07d32a8eb3cc-190\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003eDynamic Power on Demand (DPD):\u003c\/b\u003e\u003cspan\u003e Rather than running high continuous power output that generates excess heat,\u003c\/span\u003e\u003cspan\u003e DPD uses a dual-rail power supply structure.\u003c\/span\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-485 citation-end-485\"\u003eIt delivers a clean 50 W continuous rating, but seamlessly switches to higher voltage rails during musical transients to supply up to \u003c\/span\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"287\" class=\"\"\u003e\u003cspan class=\"math-inline\" data-math=\"7\\text{ dB}\" data-index-in-node=\"287\"\u003e7 dB\u003c\/span\u003e\u003cspan class=\"citation-484\"\u003e of dynamic headroom\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-484 citation-end-484\"\u003e.\u003csup class=\"superscript embedded\" data-turn-source-index=\"3\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003eMassive Dual Analog VU Meters:\u003c\/b\u003e\u003cspan\u003e The front panel is dominated by two 5-inch green-backlit analog power meters with real-time peak indicator LEDs to track DPD activation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003eProtection \u0026amp; Muting Circuits:\u003c\/b\u003e\u003cspan\u003e Includes built-in output protection and startup muting relays to eliminate turn-on thumps and protect low-impedance speaker loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\" data-path-to-node=\"6\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\" data-path-to-node=\"7\"\u003ePower Output \u0026amp; Performance\u003c\/h3\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"8\"\u003e\n\u003cli id=\"p-rc_098e07d32a8eb3cc-184\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,0,0\" id=\"p-rc_098e07d32a8eb3cc-191\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eContinuous Power Output:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-483 citation-end-483\"\u003e50 Watts per channel into 8 ohms\u003c\/span\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eDynamic Headroom:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"7.0\\text{ dB}\" data-index-in-node=\"18\"\u003e7.0 dB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eDynamic Power (DPD Peak Output):\u003c\/b\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"8,2,1\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,2,1,0,0\"\u003e\u003cb data-path-to-node=\"8,2,1,0,0\" data-index-in-node=\"0\"\u003e8 Ohms:\u003c\/b\u003e\u003cspan\u003e 280–300 Watts peak\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,2,1,1,0\"\u003e\u003cb data-path-to-node=\"8,2,1,1,0\" data-index-in-node=\"0\"\u003e4 Ohms:\u003c\/b\u003e\u003cspan\u003e 450–500 Watts peak\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli id=\"p-rc_098e07d32a8eb3cc-185\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,3,0\" id=\"p-rc_098e07d32a8eb3cc-192\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eTotal Harmonic Distortion (THD):\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-480 citation-end-480\"\u003e0.02% at rated power\u003csup class=\"superscript embedded\" data-turn-source-index=\"7\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eFrequency Response:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"20\\text{ Hz}\" data-index-in-node=\"20\"\u003e$20\\text{ Hz}$\u003c\/span\u003e\u003cspan\u003e to \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"20\\text{ kHz}\" data-index-in-node=\"36\"\u003e$20\\text{ kHz}$\u003c\/span\u003e\u003cspan\u003e (\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\pm 0.2\\text{ dB}\" data-index-in-node=\"51\"\u003e$\\pm 0.2\\text{ dB}$\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli id=\"p-rc_098e07d32a8eb3cc-186\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,5,0\" id=\"p-rc_098e07d32a8eb3cc-193\"\u003e\u003cb data-path-to-node=\"8,5,0\" data-index-in-node=\"0\"\u003eDamping Factor:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-479 citation-end-479\"\u003e\u0026gt;150 (8 ohms)\u003csup class=\"superscript embedded\" data-turn-source-index=\"8\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,6,0\"\u003e\u003cb data-path-to-node=\"8,6,0\" data-index-in-node=\"0\"\u003eSignal-to-Noise Ratio:\u003c\/b\u003e\u003cspan\u003e 115 dB (A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"ltr\" data-path-to-node=\"10\"\u003eMechanical \u0026amp; Physical Specs\u003c\/h3\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"11\"\u003e\n\u003cli id=\"p-rc_098e07d32a8eb3cc-187\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"11,0,0\" id=\"p-rc_098e07d32a8eb3cc-194\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eSpeaker Load Impedance:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-478 citation-end-478\"\u003e2 to 8 ohms supported natively\u003csup class=\"superscript embedded\" data-turn-source-index=\"9\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eInput Sensitivity:\u003c\/b\u003e\u003cspan\u003e 1.\u003c\/span\u003e\u003cspan\u003e0 V RMS for rated output\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eSpeaker Output Terminals:\u003c\/b\u003e\u003cspan\u003e Dual heavy-duty 5-way binding posts (accepts 4mm banana plugs)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli id=\"p-rc_098e07d32a8eb3cc-188\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"11,3,0\" id=\"p-rc_098e07d32a8eb3cc-195\"\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003eDimensions (\u003cspan class=\"math-inline\" data-math=\"W \\times H \\times D\" data-index-in-node=\"12\"\u003e$W \\times H \\times D$\u003c\/span\u003e):\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"420 \\times 122 \\times 395\\text{ mm}\" data-index-in-node=\"34\"\u003e$420 \\times 122 \\times 395\\text{ mm}$\u003c\/span\u003e\u003cspan class=\"citation-477 citation-end-477\"\u003e (\u003csup class=\"superscript embedded\" data-turn-source-index=\"10\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"16.5 \\times 4.8 \\times 15.5\\text{ in}\" data-index-in-node=\"71\"\u003e$16.5 \\times 4.8 \\times 15.5\\text{ in}$\u003c\/span\u003e\u003cspan class=\"citation-476 citation-end-476\"\u003e)\u003csup class=\"superscript embedded\" data-turn-source-index=\"11\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli id=\"p-rc_098e07d32a8eb3cc-189\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"11,4,0\" id=\"p-rc_098e07d32a8eb3cc-196\"\u003e\u003cb data-path-to-node=\"11,4,0\" data-index-in-node=\"0\"\u003eWeight:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-475 citation-end-475\"\u003e11.5 kg (25.35 lbs)\u003csup class=\"superscript embedded\" data-turn-source-index=\"12\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"citation-475 citation-end-475\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/9204\/5301\/files\/ServicePowerAmp.png?v=1775445787\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Proton","offers":[{"title":"Default Title","offer_id":68127371755765,"sku":null,"price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/9204\/5301\/files\/IMG_8758.jpg?v=1794616560","url":"https:\/\/www.theturntablestore.com\/products\/proton-aa-1150-power-amplifier-50w-rms-fully-serviced","provider":"The Turntable Store","version":"1.0","type":"link"}