{"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 SYLVANIA for Baldwin Long Gray Plates O Getter Matched Tubes Made in USA '50s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cstrong\u003e12AU7A ( ECC82 ) NOS SYLVANIA for Baldwin Long Gray Plates O Getter Matched Tubes\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMade in USA '50s\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 12AU7A SYLVANIA labeled Baldwin was produced in the 1950s and was selected specifically for use in equipment made by Baldwin. This involves greater attention to sound quality and special attention to the linearity and reliability of the tube. The sound It could be described as rich, warm and detailed, with a good musical response. It is characterized by a well-controlled bass response, richly detailed mids and clear highs. The harmonics are pleasant and the sound can have a pleasant smoothness 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\u003eWorn logos as shown in the photo.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube tester:\u003cbr\u003e\u003c\/strong\u003e Average 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\u003eValve 1:\u003cbr\u003eSection 1:\u003cmeta charset=\"utf-8\"\u003e Gm = 2200 ; Ia = 9.2 mA\u003cbr\u003eSection 2:\u003cmeta charset=\"utf-8\"\u003e Gm = 2200 ; Ia =\u003cmeta charset=\"utf-8\"\u003e 9.4mA\u003cbr\u003eValve 2:\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e Section 1:\u003cmeta charset=\"utf-8\"\u003e Gm = 2150 ; Ia = 9.0 mA\u003cbr\u003eSection 2:\u003cmeta charset=\"utf-8\"\u003e Gm = 2200 ; Ia = 9.2 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eValve 3:\u003cbr\u003eSection 1:\u003cmeta charset=\"utf-8\"\u003e Gm =\u003cmeta charset=\"utf-8\"\u003e 2150 ; Ia = 8.8 mA\u003cbr\u003eSection 2:\u003cmeta charset=\"utf-8\"\u003e Gm =\u003cmeta charset=\"utf-8\"\u003e 2150 ; Ia = 9.2 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eValve 4:\u003cbr\u003eSection 1:\u003cmeta charset=\"utf-8\"\u003e Gm =\u003cmeta charset=\"utf-8\"\u003e 2200 ; Ia = 9.2 mA\u003cbr\u003eSection 2:\u003cmeta charset=\"utf-8\"\u003e Gm =\u003cmeta charset=\"utf-8\"\u003e 2200 ; Ia = 9.4 mA\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOther Tests Performed:\u003cbr\u003eMicrophone 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 rel=\"noopener\" title=\"Why our tubes are different – the VTT protocol that improves sound, reliability and durability\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves 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":79.9,"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-de\/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"}