{"product_id":"12au7a-ecc82-nos-sylvania-for-baldwin-long-gray-plates-o-getter-matched-tubes-made-in-usa-50s-copy-copy","title":"12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Matched Quad Tubes Made in USA '60s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Matched Quad Tubes Made in USA '60s\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe SYLVANIA 12AU7A, labeled Baldwin, was produced in the 1960s and specifically selected for use in equipment manufactured by Baldwin. This indicates a greater focus on sound quality and particular attention to the tube's linearity and reliability. The sound could be described as rich, warm, and detailed, with good musical response. It features well-controlled bass, richly detailed mids, and crisp highs. Harmonics are pleasant, and the sound can have a pleasing softness or roundness.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLow Noise \u0026amp; Microphonics\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSame manufacturing code: ANJ 312 052\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eLogos worn as shown in photos.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube tester:\u003cbr\u003e\u003c\/strong\u003eAverage 100% Gm = 2200 ; Ia = 10.5 mA\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8.5V\u003cstrong\u003e\u003cbr\u003eTEST RESULT: VERY STRONG\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTube 1:\u003cbr\u003eSection 1: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = 9.2 mA\u003cbr\u003eSection 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = \u003cmeta charset=\"utf-8\"\u003e9.4 mA\u003cbr\u003eTube 2:\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003eSection 1: \u003cmeta charset=\"utf-8\"\u003eGm = 2150 ; Ia = 9.0 mA\u003cbr\u003eSection 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = 9.2 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eTube 3:\u003cbr\u003eSection 1: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2150 ; Ia = 8.8 mA\u003cbr\u003eSection 2: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2150 ; Ia = 9.2 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eTube 4:\u003cbr\u003eSection 1: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2200 ; Ia = 9.2 mA\u003cbr\u003eSection 2: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2200 ; Ia = 9.4 mA\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOther Tests performed:\u003cbr\u003eMicrophonics Test\u003cbr\u003eEmission Quality\u003cbr\u003eShort Circuit Test\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eGas Test\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":49393743397212,"sku":"02425M","price":89.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_72bae0b2-3d33-4b1b-ac2c-0be5bd822497.jpg?v=1726764267","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/12au7a-ecc82-nos-sylvania-for-baldwin-long-gray-plates-o-getter-matched-tubes-made-in-usa-50s-copy-copy","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}