{"product_id":"best-quad-6bl7gta-sylvania-black-plates-nos-1960s-same-build-matched-quad","title":"(!!!!) (Best Quad) 6BL7GTA Sylvania black plates NOS 1960's same build matched quad","description":"\u003cp\u003e\u003cstrong\u003e1 quad set) 6BL7GTA Sylvania black plates 1960's NOS same build\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 35.2\/36.6ma Gm=6800\/7150\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 37.8\/37.2ma Gm=7200\/6900\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 34.8\/38.0ma Gm=7000\/7300\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 tube) 36.5\/37.0ma Gm=7100\/7350\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGood Ma used 30-35ma\u003c\/p\u003e\n\u003cp\u003eGood Gm used 6500\u003c\/p\u003e\n\u003ch1\u003eRecommended for\u003c\/h1\u003e\n\u003cp\u003e- Single Power MPX3 SE\u003cbr\u003e- Cary 1610se\u003c\/p\u003e\n\u003cp\u003e(Vfil=6.3V @ 1.5A, Vplate max=500V, Iplate max=60ma, Pout max = 12 watts total for both triode sides)\u003cbr\u003eThe 6BL7GTA is interchangeable with a 6BL7GT but differs from it in having\u003cbr\u003ean improved section 1 for increased life as an oscillator, and controlled zero-bias\u003cbr\u003eplate current in both sections\u003cbr\u003eTypical Characteristics Class A Amp:\u003cbr\u003eVplate= 250V\u003cbr\u003eIplate= 42ma\u003cbr\u003eVgrid= -9\u003cbr\u003eRp= 2150 ohms\u003cbr\u003eMu= 15\u003cbr\u003eGm= 6200 for 6BL7 (RCA manual 1953) and 7000 mhos for 6BL7GTA (GE Manual 1957)\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tube World","offers":[{"title":"6BL7GTA","offer_id":48864689586428,"sku":"6BL7GTApair","price":68.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0333\/7633\/files\/3_116e9607-874e-442b-9038-62e69d3a3d43.jpg?v=1773861578","url":"https:\/\/tubeworldexpress.com\/products\/best-quad-6bl7gta-sylvania-black-plates-nos-1960s-same-build-matched-quad","provider":"Tube World Express","version":"1.0","type":"link"}