{"product_id":"heritage-audio-lang-silverr47","title":"Heritage Audio Lang Silverr47","description":"\u003cp data-path-to-node=\"0\"\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"0\"\u003eHeritage Audio LANG Silverr 47 Tube Microphone Preamp\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"0\"\u003e\u003ci data-path-to-node=\"0\" data-index-in-node=\"54\"\u003eDual-Channel Vintage-Style Tube Preamplifier\u003c\/i\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003eThe Heritage Audio LANG Silverr 47 is a 2U dual-channel, all-tube microphone preamp inspired by classic 1960s British console line amplifiers. It pairs NOS 6AU6 pentode input stage tubes with JJ E88CC output tubes and custom LANG Electronics transformers, delivering classic tube warmth, high-fidelity detail, or heavy analog harmonic saturation.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"2\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-path-to-node=\"3\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,0,0\"\u003e\u003cb data-path-to-node=\"3,0,0\" data-index-in-node=\"0\"\u003eDual-Channel All-Tube Signal Path:\u003c\/b\u003e Each channel utilizes a matched tube pair consisting of an NOS 6AU6 pentode input valve and a JJ E88CC output valve.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,1,0\"\u003e\u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"0\"\u003eCustom Transformers:\u003c\/b\u003e Features custom-designed LANG Electronics input and output transformers to deliver classic British transformer character.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,2,0\"\u003e\u003cb data-path-to-node=\"3,2,0\" data-index-in-node=\"0\"\u003eNo Feedback (NFB) Mode:\u003c\/b\u003e Switchable No Feedback gain setting bypasses negative feedback, significantly boosting harmonic distortion for drive and saturation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,3,0\"\u003e\u003cb data-path-to-node=\"3,3,0\" data-index-in-node=\"0\"\u003ePrecision Gain Staging:\u003c\/b\u003e Equipped with 6 dB stepped voltage gain controls (+22 dB to +52 dB) and variable output attenuators for repeatable gain staging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,4,0\"\u003e\u003cb data-path-to-node=\"3,4,0\" data-index-in-node=\"0\"\u003eFlexible I\/O Connectivity:\u003c\/b\u003e Offers balanced XLR microphone inputs, 1\/4\" TRS line inputs, front-panel 1\/4\" TS DI instrument inputs, and parallel XLR\/TRS outputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,5,0\"\u003e\u003cb data-path-to-node=\"3,5,0\" data-index-in-node=\"0\"\u003eChannel Controls:\u003c\/b\u003e Includes a -20 dB Pad, +48V Phantom Power, Phase Reverse, and an 80 Hz High-Pass Filter per channel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"4\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable data-path-to-node=\"5\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,1,0,0\"\u003e\u003cb data-path-to-node=\"5,1,0,0\" data-index-in-node=\"0\"\u003ePreamp Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,1,1,0\"\u003eTube (Dual-Channel)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,2,0,0\"\u003e\u003cb data-path-to-node=\"5,2,0,0\" data-index-in-node=\"0\"\u003eForm Factor\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,2,1,0\"\u003e2U Rackmount (19-inch)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,3,0,0\"\u003e\u003cb data-path-to-node=\"5,3,0,0\" data-index-in-node=\"0\"\u003eTubes Per Channel\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,3,1,0\"\u003e1 x NOS 6AU6 (Input Stage), 1 x JJ E88CC (Output Stage)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,4,0,0\"\u003e\u003cb data-path-to-node=\"5,4,0,0\" data-index-in-node=\"0\"\u003eTransformers\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,4,1,0\"\u003eCustom LANG Electronics Input \u0026amp; Output Transformers\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,5,0,0\"\u003e\u003cb data-path-to-node=\"5,5,0,0\" data-index-in-node=\"0\"\u003eGain Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,5,1,0\"\u003e+22 dB to +52 dB (6 dB stepped increments)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,6,0,0\"\u003e\u003cb data-path-to-node=\"5,6,0,0\" data-index-in-node=\"0\"\u003eTHD\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,6,1,0\"\u003e\u0026lt;0.2% (Normal Mode), up to ~1% (NFB Mode)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,7,0,0\"\u003e\u003cb data-path-to-node=\"5,7,0,0\" data-index-in-node=\"0\"\u003eFrequency Response\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,7,1,0\"\u003e20 Hz – 20 kHz (±0.5 dB)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,8,0,0\"\u003e\u003cb data-path-to-node=\"5,8,0,0\" data-index-in-node=\"0\"\u003eMicrophone Input Impedance\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,8,1,0\"\u003e~1.5 kΩ (Balanced XLR)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,9,0,0\"\u003e\u003cb data-path-to-node=\"5,9,0,0\" data-index-in-node=\"0\"\u003eLine Input Impedance\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,9,1,0\"\u003e~10 kΩ (1\/4\" TRS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,10,0,0\"\u003e\u003cb data-path-to-node=\"5,10,0,0\" data-index-in-node=\"0\"\u003eDI Input Impedance\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,10,1,0\"\u003e\u0026gt;2 kΩ (Unbalanced 1\/4\" TS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,11,0,0\"\u003e\u003cb data-path-to-node=\"5,11,0,0\" data-index-in-node=\"0\"\u003eOutput Impedance\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,11,1,0\"\u003e\u0026lt;200 Ω (Transformer Balanced)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,12,0,0\"\u003e\u003cb data-path-to-node=\"5,12,0,0\" data-index-in-node=\"0\"\u003eAnalog Inputs\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,12,1,0\"\u003e2 x XLR (Mic), 2 x 1\/4\" TRS (Line), 2 x 1\/4\" TS (Front DI)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,13,0,0\"\u003e\u003cb data-path-to-node=\"5,13,0,0\" data-index-in-node=\"0\"\u003eAnalog Outputs\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,13,1,0\"\u003e2 x XLR, 2 x 1\/4\" TRS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,14,0,0\"\u003e\u003cb data-path-to-node=\"5,14,0,0\" data-index-in-node=\"0\"\u003ePower Supply\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,14,1,0\"\u003eInternal Worldwide Power Supply\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,15,0,0\"\u003e\u003cb data-path-to-node=\"5,15,0,0\" data-index-in-node=\"0\"\u003eDimensions (H x W x D)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,15,1,0\"\u003e3.5″ x 19″ x 8.3″ (88 mm x 481 mm x 211 mm)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,16,0,0\"\u003e\u003cb data-path-to-node=\"5,16,0,0\" data-index-in-node=\"0\"\u003eWeight\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"5,16,1,0\"\u003e12.3 lbs. (5.6 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Heritage Audio","offers":[{"title":"Default Title","offer_id":67617315062010,"sku":"Silverr47","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/4668\/files\/heritage_audio_silverr_47_all_tube_1896376.jpg?v=1790866614","url":"https:\/\/www.proaudiodesign.com\/products\/heritage-audio-lang-silverr47","provider":"Professional Audio Design, Inc","version":"1.0","type":"link"}