{"product_id":"12au7-mullard","title":"12AU7 Mullard","description":"\u003cdiv class=\"n6owBd awi2gc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACAoQAA\" data-complete=\"true\"\u003e\n\u003cspan data-subtree=\"aimfl,mfl\"\u003eThe \u003c\/span\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003eMullard 12AU7 \/ ECC82\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e vacuum tube exists in two distinct categories: \u003cmark class=\"b6AQX\" data-wiz-attrbind=\"class=Ni8hTb_v\/cFwyDc\" data-sfc-root=\"c\" data-ved=\"2ahUKEwiHvLe2u9CXAxU9Z0EAHTN3AOUQuJAPegoIAggACAAIChAD\" data-complete=\"true\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003eNew Old Stock (NOS) vintage British\/foreign-made originals\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e and \u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003emodern Russian\/Eastern European reissues\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[[[null,null,null,null,null,null,null,null,null,null,null,null,[247864,null,0]]]]--\u003e\u003c\/mark\u003e.\u003cspan\u003e [\u003ca href=\"https:\/\/upscaleaudio.com\/products\/mullard-new-production-12au7-ecc82\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.ebay.com\/b\/Mullard-12au7\/64627\/bn_7023365281\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/forums.stevehoffman.tv\/threads\/mullard-12au7-re-issue-sound-compare-to-nos.548973\/\"\u003e3\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"yhAwj\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\" data-sfc-inited=\"2\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"ZLzG0d ncoeY E8xBUb\" role=\"heading\" aria-level=\"3\" data-animation-nesting=\"\" data-sfc-cp=\"\" data-wiz-attrbind=\"aria-level=Ni8hTb_17\/fLk2Md\" data-sfc-root=\"c\" data-complete=\"true\"\u003eVintage NOS Mullard 12AU7 (ECC82 \/ CV4003)\u003c!--TgQPHd|||[[2,[null,null,null,null,null,null,null,null,null,null,null,null,[351768,null,0]],[],null,1]]--\u003e\n\u003c\/div\u003e\n\u003cdiv data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwiHvLe2u9CXAxU9Z0EAHTN3AOUQi4wTegoIAggACAAIFxAB\" data-hveid=\"CAIIAAgACBcQAQ\" data-complete=\"true\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003eOrigin:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Originally manufactured in historic facilities like Blackburn and Mitcham in Great Britain, as well as period variants produced in locations like Philips-owned plants or overseas factories (such as India). Mil-spec versions carry the \u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003eCV4003\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e designation.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.youtube.com\/watch?v=znAOArxkrxk\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.youtube.com\/watch?v=RRZ_aHXPhdo\u0026amp;t=9\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.youtube.com\/watch?v=YfBTlJBWoGw\"\u003e3\u003c\/a\u003e, \u003ca href=\"https:\/\/www.ebay.com\/b\/Mullard-12au7\/64627\/bn_7023365281\"\u003e4\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwiHvLe2u9CXAxU9Z0EAHTN3AOUQi4wTegoIAggACAAIFxAI\" data-hveid=\"CAIIAAgACBcQCA\" data-complete=\"true\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003eSound Character:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Celebrated for a lush, warm, musical midrange, rich harmonic texture, and smooth top-end response.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.amplifiedparts.com\/products\/vacuum-tubes\/12au7?filters=2341a2412\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.ebay.com\/itm\/358077097358\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.youtube.com\/watch?v=znAOArxkrxk\"\u003e3\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwiHvLe2u9CXAxU9Z0EAHTN3AOUQi4wTegoIAggACAAIFxAO\" data-hveid=\"CAIIAAgACBcQDg\" data-complete=\"true\"\u003e\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003e\u003cspan class=\"yADgie\"\u003eAvailability \u0026amp; Price:\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003cspan class=\"yADgie\"\u003e Sourced through specialty collectors and platforms like \u003c\/span\u003e\u003cspan data-sfc-cp=\"\" data-sfc-root=\"c\" data-wiz-uids=\"Ni8hTb_1x\" data-complete=\"true\"\u003e\u003cspan class=\"\"\u003e\u003ca class=\"H23r4e\" rel=\"noopener\" data-ved=\"2ahUKEwiHvLe2u9CXAxU9Z0EAHTN3AOUQy_kOegoIAggACAAIFxAQ\" data-hveid=\"CAIIAAgACBcQEA\" href=\"https:\/\/www.ebay.com\/b\/Mullard-12au7\/64627\/bn_7023365281\" target=\"_blank\"\u003e\u003cspan class=\"yADgie\"\u003eeBay\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[[\u0026quot;https:\/\/www.ebay.com\/b\/Mullard-12au7\/64627\/bn_7023365281\u0026quot;,null,null,[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,[{\u0026quot;1218\u0026quot;:[16,null,null,null,[1]]}]],16,null,\u0026quot;25+ Mullard 12au7 for sale | Updated Oct 2026\u0026quot;,\u0026quot;Listings: Mullard 12AU7\/ECC82 vacuum preamp tubes from Great Britain (Blackburn, Mitcham) spanning 1950s–1980s, offered as NOS, open box, or used, priced generally from $10 to $600 with varying getter types (square, halo, O-getter) and plate styles (long, short, box). Compatibility: CRT televisions, PVM monitors, Hi-Fi audio equipment, broadcasting equipment, and microwaves. Specifications: Glass hulls, pin connectivity (4-pin and 8-pin options), and plate colors indicating optimization (black for general use, copper for microwaves\/TVs, grey for audio, silver for military-grade).\u0026quot;,\u0026quot;https:\/\/encrypted-tbn0.gstatic.com\/images?q\\u003dtbn:ANd9GcTZGuFcS0Rnfb1zCyS6_7B0is9az-jtEc5MwaCigNFdclIEXYbfG93urQ0rGABLcdylO7AsTtirgtbp2EE\u0026quot;,\u0026quot;eBay\u0026quot;,\u0026quot;https:\/\/encrypted-tbn1.gstatic.com\/faviconV2?url\\u003dhttps:\/\/www.ebay.com\\u0026client\\u003dAIM\\u0026size\\u003d128\\u0026type\\u003dFAVICON\\u0026fallback_opts\\u003dTYPE,SIZE,URL\u0026quot;,[[1792769660935687,4286269,3842012979],null,null,null,null,[[2,0,0,22]]],null,\u0026quot;774212d3-4cb4-461a-b4e5-118b8015b593\u0026quot;]]--\u003e\u003c\/span\u003e\u003cspan class=\"yADgie\"\u003e, with vintage NOS or tested matched pairs generally ranging from \u003c\/span\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-complete=\"true\"\u003e\u003cspan class=\"yADgie\"\u003e$10 to $600+\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e","brand":"Mullard","offers":[{"title":"Default Title","offer_id":67853403422799,"sku":null,"price":680.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/4354\/9519\/files\/images_ea803a0b-7cb9-40f4-933d-5c3d67b1d70e.jpg?v=1792769715","url":"https:\/\/theoldstockroom.com\/products\/12au7-mullard","provider":"The Old Stockroom","version":"1.0","type":"link"}