{"product_id":"genalex-gold-lion-12ax7","title":"Gold Lion ECC81 \/ B739 \/ 12AT7 Preamp Vacuum Tube","description":"\u003cbuilder-component rev=\"zruk7m94ix8\" api-key=\"48d1cdcd52ec4d289f1ef8c4f75da167\" options='{\"locale\":\"Default\"}' name=\"product-description\" entry=\"9700f3f4ce974c0ba03a0c32a8b33c6f\"\u003e\n\n\u003c!-- ***** Generated by Builder.io on Fri, 18 Jul 2025 14:46:44 GMT ***** --\u003e\n\n\u003cstyle type=\"text\/css\" class=\"builder-styles builder-api-styles\"\u003e\/*start:h47494*\/.css-h47494{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;}\/*end:h47494*\/ \/*start:1t2m0n6*\/.css-1t2m0n6.builder-block{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;position:relative;-webkit-flex-shrink:0;-ms-flex-negative:0;flex-shrink:0;box-sizing:border-box;margin-top:0px;margin-right:200px;margin-left:200px;}@media only screen and (max-width:640px){.css-1t2m0n6.builder-block{margin-right:0px;margin-left:0px;}}\/*end:1t2m0n6*\/ \/*start:1840m1q*\/.css-1840m1q{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;}@media (max-width:999px){.css-1840m1q{-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;}}\/*end:1840m1q*\/ \/*start:1ukkadj*\/.css-1ukkadj{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;line-height:normal;width:calc(100% - 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They are also among the rarest types available. They exhibit a large, detailed soundstage characterized by an expressive midrange, deep tight bass, and a smooth extended high end. The reissue Genalex Gold Lion ECC81\/B739 recreates the sound signature of the original. This tube features balanced sections and gold-plated pins.\u003c\/p\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-fa85a0b75fe04af1ad4b719c0e6654a8 builder-has-component css-hgfgng\" builder-id=\"builder-fa85a0b75fe04af1ad4b719c0e6654a8\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eMoon Audio Tube Testing Process\u003c\/h3\u003e\n\u003cp\u003eOur high-end audio systems achieve sonic purity through the use of carefully selected NOS vacuum tubes. We take time to search for NOS tubes, understanding their unique potential for audio reproduction. Each tube is rigorously tested using legendary HICKOK 800K 600K Dynamic Mutual Conductance Tube Tester and TV7-A\/U Vacuum Tube Testers to measure critical parameters, including mutual conductance, emission, and gas levels. By precisely matching tubes based on these measurements, we deliver balanced, dynamic, and lifelike audio that elevates your listening experience to an art form.  \u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"ur9nhf\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-3a6843b8a59d4a899cd19743d6441fdc css-ur9nhf\" builder-id=\"builder-3a6843b8a59d4a899cd19743d6441fdc\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1mvsfya\"\u003e\u003c\/style\u003e\n\u003cimg src=\"https:\/\/cdn.builder.io\/api\/v1\/pixel?apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\" aria-hidden=\"true\" alt=\"\" role=\"presentation\" width=\"0\" height=\"0\" class=\"builder-block builder-pixel-gf62dw9hx54 css-1mvsfya\" builder-id=\"builder-pixel-gf62dw9hx54\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/builder-component\u003e\n\u003cscript async src=\"https:\/\/cdn.builder.io\/js\/webcomponents\"\u003e\u003c\/script\u003e","brand":"Genalex","offers":[{"title":"Default Title","offer_id":51147334844730,"sku":"Genalex-Gold-Lion-12AT7","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/0245\/7402\/files\/gen-ECC83-2-Photoroom.jpg?v=1744650465","url":"https:\/\/www.moon-audio.pro\/products\/genalex-gold-lion-12ax7","provider":"Moon Audio","version":"1.0","type":"link"}