{"product_id":"audio-research-reference-20-preamplifier","title":"Audio Research Reference 20 Preamplifier","description":"\u003cp\u003eThe Reference 20 is Audio Research's flagship line stage preamplifier, a ground-up architectural redesign rather than an update of the prior Reference series.\u003c\/p\u003e\u003cp\u003eIt replaces the traditional stamped chassis with a layered, multi-metal construction for resonance control, with circuits mounted on suspended, mass-loaded boards, and uses a redesigned power supply with new film capacitors to lower the noise floor.\u003c\/p\u003e\u003cp\u003eIt consolidates what was previously a two-chassis design into a single chassis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTubes: six 6H30P dual-triodes in the audio circuit, plus one 6550 and one 6H30 in the power supply\u003c\/li\u003e\n\u003cli\u003eInputs\/outputs: balanced XLR (with sub out) and single-ended RCA (with sub out)\u003c\/li\u003e\n\u003cli\u003eGain: 15dB balanced, 9dB single-ended\u003c\/li\u003e\n\u003cli\u003eTHD+N: 0.07% balanced, 0.03% single-ended\u003c\/li\u003e\n\u003cli\u003eFrequency response: 1.5Hz to 24kHz (-1dB), 120kHz (-3dB)\u003c\/li\u003e\n\u003cli\u003eDimensions: 19 in W x 8.125 in H x 19.0625 in D\u003c\/li\u003e\n\u003cli\u003eWeight: 62.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":53145004835133,"sku":"ARC-REF20","price":48000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/5741\/8813\/files\/Ref20-alu-front-1500.jpg?v=1790263659","url":"https:\/\/audio-concepts.com\/products\/audio-research-reference-20-preamplifier","provider":"AudioConcepts","version":"1.0","type":"link"}