{"product_id":"audio-research-reference-20-line-stage-preamplifier","title":"Audio Research Reference 20 Line-Stage Preamplifier","description":"\u003cdiv class=\"vc_custom_heading_wrap\"\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003ch2 class=\"font-156269 h2 font-weight-300 text-color-829503-color\"\u003e\u003cspan\u003eThe New Reference\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vc_custom_heading_wrap\"\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-500 text-color-wvjs-color\"\u003eThe Reference 20 is the culmination of a singular objective: to advance beyond the established limits of preamplifier architecture and redefine what is possible in line-stage performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vc_custom_heading_wrap\"\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003eDeveloped without constraint, it represents a complete rethinking of the line-stage preamplifier. Every critical element—mechanical, electrical, and material—has been reconsidered in pursuit of one outcome: absolute sonic transparency. The result, in keeping with Audio Research tradition, is consistent with achievements of the SP-3 and Reference 1 before it: a new reference, not only for the Audio Research, but for the category itself.\u003c\/p\u003e\n\u003ch2 class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003eNew Architecture\u003c\/h2\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003eAt the heart of the Reference 20 is an entirely new platform engineered to elimiate sources of distortion previously accepted as unavoidable.\u003c\/p\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003eThe traditional stamped chassis has been replaced with a sophisticated multi-metal, layered construction designed to disperse and control resonant energy. Critical circuits are mounted on custom suspended , mass-loaded boards that further isolate the signal path from mechanical influence. \u003c\/p\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003eThis structural approach is not cosmetic but rather foundational. By addressing resonance at every level, the Reference 20 preserves low-level information and spatial detail with unprecedented focus and articulation.\u003c\/p\u003e\n\u003ch2 class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003ePower. Harnessed. \u003c\/h2\u003e\nThe power supply of the Reference 20 has been comprehensively redesigned to elevate both performance and reliability.\u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003eThrough advanced regulation and the applicationof the latest component technologies - including next-generation film capacitors - noise on the regulated rails has been reduced by an order of magnitude. This dramatic lowering of the noise floor allows the preamplifier to resolve the finest musical nuances while maintaining composure during dynamic extremes. Articulation and speed of dynamic onset are state of the art with no sacrifice of body or musical flow. \u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003eOccupying a single chassis, the REF20 excels over its formidable two-chassis predecessor in all respects, even \u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003ewith performance attributes usually associated with amplifiers: authority, impact and resolving the extreeme outer envelope of the recording space. \u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003eThe result is apresentation that is at once more revealing and more natural - effortless, unforced and profoundly transparent. \u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003cdiv class=\"vc_custom_heading_wrap\"\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-500 text-color-wvjs-color\"\u003eThe cumulative result of these advances is not incremental. It is transformational.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003eThe Reference 20 reveals music with a level of dimensionality, tonal integrity, timing coherence, and dynamic expression that extends beyond the boundaries of previous reference designs. It conveys not only the structure of a recording, but the intent and presence of the performance itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vc_custom_heading_wrap\"\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003cp class=\"font-156269 h4 fontheight-140156 font-weight-300\"\u003eIn doing so, it establishes the new benchmark for what a reference preamplifier can achieve.\u003c\/p\u003e\n\u003cdiv class=\"vc_custom_heading_wrap\"\u003e\n\u003cdiv class=\"heading-text el-text\"\u003e\n\u003ch6 class=\"font-156269 h6 font-weight-400 text-uppercase\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/h6\u003e\n\u003ch2 class=\"font-156269 h6 font-weight-400 text-uppercase\"\u003e\u003cspan\u003eTECHNICAL SPECIFICATIONS\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"uncode_text_column\"\u003e\n\u003cdiv class=\"wptb-root wptb-table-135467 wptb-style-isolation\" data-table-id=\"135467\" data-last-device=\"desktop\"\u003e\n\u003cdiv class=\"wptb-table-wrapper\" data-table-id=\"135467\"\u003e\n\u003cdiv class=\"wptb-table-container wptb-scroll-x\"\u003e\n\u003ctable class=\"wptb-table wptb-has-link-color\"\u003e\n\u003ccolgroup\u003e\n\u003ccol class=\"\"\u003e\n\u003ccol class=\"\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"0\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eFrequency Response\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"0\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e1.5Hz to 24kHz at -1dB, 120kHz at -3dB\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"1\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eTHD+Noise\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"1\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e0.07% Balanced, 0.03% Single Ended\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"2\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eGain - Main output\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"2\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e15dB Balanced output, 9dB Single Ended output\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"3\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eInput Impedance\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"3\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e50K ohms Balanced, 25K ohms Single Ended\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"4\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eOutput Impedance\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"4\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e600 ohms Balanced, 300 ohms Single Ended Main Out\u003c\/p\u003e\n\u003cp\u003e200 ohms Balanced, 100 ohms Single Ended Sub Out\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"5\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eOutput Polarity\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"5\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eNon-inverting\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"6\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eTube Complement\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"6\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e(6)-6H30P dual triodes Audio, (1) 6550 and (1) 6H30 Power supply\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"7\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003ePower Requirements\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"7\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e100-135VAC 60Hz (200-250VAC 50\/60Hz) 147 watts maximum.\u003c\/p\u003e\n\u003cp\u003eStandby: 4.3 watts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"8\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"8\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eWidth 19” (48.26 cm)\u003c\/p\u003e\n\u003cp\u003eHeight 8 1\/8” (20.64 cm)\u003c\/p\u003e\n\u003cp\u003eDepth 19 1\/16” (48.42 cm) including handles and rear bumpers\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"wptb-row\"\u003e\n\u003ctd class=\"wptb-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"9\" data-col=\"0\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eWeight\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd class=\"wptb-cell wptb-row-ending-cell\" colspan=\"1\" rowspan=\"1\" data-row=\"9\" data-col=\"1\"\u003e\n\u003cdiv class=\"wptb-cell-content\"\u003e\n\u003cdiv class=\"wptb-text-container\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e62.5 lbs. (28.35 kg) Net; 78 lbs. (35.38 kg) Shipping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Audio Research","offers":[{"title":"Silver","offer_id":59659499798860,"sku":"ARESEARCHREF6SE","price":40740.0,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":59659499831628,"sku":"ARESEARCHREF7BLK","price":40740.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Ref20-black-main-1500.jpg?v=1793377278","url":"https:\/\/www.stoneaudio.co.uk\/products\/audio-research-reference-20-line-stage-preamplifier","provider":"Stone Audio","version":"1.0","type":"link"}