{"product_id":"pioneer-sx-550-stereo-receiver-20w-rms-fully-serviced-original-box","title":"Pioneer SX-550 Stereo Receiver * 20W RMS * Fully Serviced * Original Box","description":"\u003ch3 dir=\"ltr\" data-path-to-node=\"0\" class=\"\"\u003eHistory of the Pioneer SX-550\u003c\/h3\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"1\" id=\"p-rc_9b4ff4b785719498-111\"\u003e\u003cspan class=\"citation-325\"\u003eReleased around \u003c\/span\u003e\u003cb data-path-to-node=\"1\" data-index-in-node=\"16\" class=\"\"\u003e\u003cspan class=\"citation-325\"\u003e1976\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-325\"\u003e, the \u003c\/span\u003e\u003cb data-path-to-node=\"1\" data-index-in-node=\"26\" class=\"\"\u003e\u003cspan class=\"citation-325\"\u003ePioneer SX-550\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-325\"\u003e is one of the classic mid-tier entries from Pioneer’s legendary \u003c\/span\u003e\u003cb data-path-to-node=\"1\" data-index-in-node=\"105\" class=\"\"\u003e\u003cspan class=\"citation-325\"\u003eSX-x50 receiver lineup\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-325 citation-end-325\"\u003e—widely regarded as a pinnacle era for vintage solid-state high fidelity.\u003csup class=\"superscript embedded\" data-turn-source-index=\"1\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-324 citation-end-324\"\u003eDuring the mid-1970s, Pioneer dominated the consumer audio market by combining high-grade aesthetic execution (brushed aluminum faceplates, weighted aluminum knobs, and the iconic soft blue dial illumination) with robust, reliable internal engineering.\u003csup class=\"superscript embedded\" data-turn-source-index=\"2\"\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\u003cp dir=\"ltr\" data-path-to-node=\"2\" id=\"p-rc_9b4ff4b785719498-112\"\u003e\u003cspan class=\"citation-323 citation-end-323\"\u003eWhile flagship monsters like the SX-1250 captured headlines, lower-wattage models like the SX-550 were built with the exact same attention to detail and warm musical voicing, making them exceptionally popular for urban apartments and secondary listening spaces where high efficiency matched with solid-state warmth was prized.\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\u003ch3 dir=\"ltr\" data-path-to-node=\"4\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"5\"\u003e\n\u003cli id=\"p-rc_9b4ff4b785719498-113\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,0,0\" id=\"p-rc_9b4ff4b785719498-124\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eType:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-322 citation-end-322\"\u003eAM\/FM Stereo Receiver\u003csup class=\"superscript embedded\" data-turn-source-index=\"4\"\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_9b4ff4b785719498-114\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,1,0\" id=\"p-rc_9b4ff4b785719498-125\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003ePower Output:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-321 citation-end-321\"\u003e20 watts per channel into 8Ω (stereo)\u003csup class=\"superscript embedded\" data-turn-source-index=\"5\"\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_9b4ff4b785719498-115\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,2,0\" id=\"p-rc_9b4ff4b785719498-126\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eFrequency Response:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-320 citation-end-320\"\u003e10Hz to 60kHz\u003csup class=\"superscript embedded\" data-turn-source-index=\"6\"\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_9b4ff4b785719498-116\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,3,0\" id=\"p-rc_9b4ff4b785719498-127\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eTotal Harmonic Distortion (THD):\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-319 citation-end-319\"\u003e0.3%\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 id=\"p-rc_9b4ff4b785719498-117\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,4,0\" id=\"p-rc_9b4ff4b785719498-128\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eDamping Factor:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-318 citation-end-318\"\u003e25\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 id=\"p-rc_9b4ff4b785719498-118\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,5,0\" id=\"p-rc_9b4ff4b785719498-129\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eInput Sensitivity:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-317 citation-end-317\"\u003e2.5mV (MM phono), 7.5mV (mic), 150mV (line)\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 id=\"p-rc_9b4ff4b785719498-119\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,6,0\" id=\"p-rc_9b4ff4b785719498-130\"\u003e\u003cb data-path-to-node=\"5,6,0\" data-index-in-node=\"0\"\u003eSignal-to-Noise Ratio:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-316 citation-end-316\"\u003e70dB (MM), 90dB (line)\u003csup class=\"superscript embedded\" data-turn-source-index=\"10\"\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_9b4ff4b785719498-120\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,7,0\" id=\"p-rc_9b4ff4b785719498-131\"\u003e\u003cb data-path-to-node=\"5,7,0\" data-index-in-node=\"0\"\u003eSpeaker Impedance Compatibility:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-315 citation-end-315\"\u003e4Ω to 16Ω (supports dual A\/B speaker switching)\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_9b4ff4b785719498-121\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,8,0\" id=\"p-rc_9b4ff4b785719498-132\"\u003e\u003cb data-path-to-node=\"5,8,0\" data-index-in-node=\"0\"\u003eSemiconductor Complement:\u003c\/b\u003e\u003cspan class=\"\"\u003e \u003c\/span\u003e\u003cspan class=\"citation-314 citation-end-314\"\u003e3 x FET, 5 x IC, 28 x transistors, 21 x diodes\u003csup class=\"superscript embedded\" data-turn-source-index=\"12\"\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_9b4ff4b785719498-122\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,9,0\" id=\"p-rc_9b4ff4b785719498-133\"\u003e\u003cb data-path-to-node=\"5,9,0\" data-index-in-node=\"0\"\u003eDimensions:\u003c\/b\u003e\u003cspan\u003e Approx.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-313 citation-end-313\"\u003e17.64 in \u003csup class=\"superscript embedded\" data-turn-source-index=\"13\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\times\" data-index-in-node=\"29\"\u003e$\\times$\u003c\/span\u003e\u003cspan class=\"citation-312 citation-end-312\"\u003e 5.55 in \u003csup class=\"superscript embedded\" data-turn-source-index=\"14\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\times\" data-index-in-node=\"44\"\u003e$\\times$\u003c\/span\u003e\u003cspan class=\"citation-311 citation-end-311\"\u003e 12.08 in (448 \u003csup class=\"superscript embedded\" data-turn-source-index=\"15\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\times\" data-index-in-node=\"65\"\u003e$\\times$\u003c\/span\u003e\u003cspan class=\"citation-310 citation-end-310\"\u003e 141 \u003csup class=\"superscript embedded\" data-turn-source-index=\"16\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\times\" data-index-in-node=\"76\"\u003e$\\times$\u003c\/span\u003e\u003cspan class=\"citation-309 citation-end-309\"\u003e 307 mm)\u003csup class=\"superscript embedded\" data-turn-source-index=\"17\"\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_9b4ff4b785719498-123\"\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,10,0\" id=\"p-rc_9b4ff4b785719498-134\"\u003e\u003cb data-path-to-node=\"5,10,0\" data-index-in-node=\"0\"\u003eWeight:\u003c\/b\u003e\u003cspan\u003e Approx.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-308 citation-end-308\"\u003e20.7 lbs (9.4 kg\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"citation-308 citation-end-308\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0673\/9204\/5301\/files\/ServiceReceivers.png?v=1775406912\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Pioneer","offers":[{"title":"Default Title","offer_id":67987948011765,"sku":null,"price":350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/9204\/5301\/files\/5EEEF8E6-74C9-4B33-B63A-C0B89E00CD39_4_5005_c.jpg?v=1794122222","url":"https:\/\/www.theturntablestore.com\/products\/pioneer-sx-550-stereo-receiver-20w-rms-fully-serviced-original-box","provider":"The Turntable Store","version":"1.0","type":"link"}