{"product_id":"6l6gb-rca-black-plates-double-bottom-getter-matched-pair-amplitrex-tested-made-in-usa","title":"6L6GB RCA Black Plates Double Bottom Getter – Matched Pair – AMPLITREX Tested – Made in USA","description":"\u003cp\u003e \u003cstrong\u003e6L6GB RCA Black Plates Double Bottom Getter – Matched Pair – AMPLITREX Tested – Made in USA – VERY STRONG Test\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e \u003cstrong\u003eDescription:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e This \u003cspan class=\"s1\"\u003e\u003cb\u003ematched pair of RCA 6L6GBs\u003c\/b\u003e\u003c\/span\u003e , made in the USA during the golden age of American manufacturing, represents one of the most solid and musically appreciated versions of the famous 6L6 family.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e The \u003cspan class=\"s1\"\u003e\u003cb\u003eblack plate\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003edouble bottom getter\u003c\/b\u003e\u003c\/span\u003e construction is typical of high-quality RCA products, known for their excellent operational stability, mechanical robustness, and electrical coherence. Black plates, in particular, are highly sought after by enthusiasts for their ability to deliver a rich, natural, and authoritative sound.\u003c\/p\u003e\n\n \u003cp class=\"p1\"\u003eThe valves have been \u003cspan class=\"s1\"\u003e\u003cb\u003etested and selected in our laboratory on AMPLITREX AT-1000\u003c\/b\u003e\u003c\/span\u003e , with \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e result, sign of very high emission and stable electrical behavior.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e This \u003cspan class=\"s1\"\u003e\u003cb\u003eMatched Pair\u003c\/b\u003e\u003c\/span\u003e configuration ensures good operational consistency between the two units, making the pair ideal for hi-fi amplifiers and quality music applications.\u003c\/p\u003e\n\n\u003ch3\u003e \u003cstrong\u003eSound Characteristics\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eBass:\u003c\/b\u003e Deep, solid, and well-controlled. The low end has weight and authority, while maintaining good articulation and rhythmic precision.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eMids:\u003c\/b\u003e Rich and natural. Vocals emerge with great presence and realism, while acoustic instruments and piano display a full and believable harmonic texture.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eHighs:\u003c\/b\u003e Smooth and refined. The extension is broad but always controlled, with a fine grain that avoids any harshness even in the most revealing systems.\u003c\/p\u003e\n\n \u003cp class=\"p1\"\u003e\u003cb\u003eDynamics:\u003c\/b\u003e Smooth and progressive. Transient response is natural and musical, with excellent microdynamics and a very balanced overall performance.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eSoundstage:\u003c\/b\u003e Wide, well-layered soundstage, with good depth and natural separation of instruments.\u003c\/p\u003e\n\n\u003ch3 data-start=\"2215\" data-end=\"2639\"\u003e 🎧 \u003cstrong data-start=\"2218\" data-end=\"2265\"\u003eUse in Push-Pull Stereo Hi-Fi Amplifiers\u003c\/strong\u003e\u003cbr data-start=\"2265\" data-end=\"2268\"\u003e\n\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e These \u003cspan class=\"s1\"\u003e\u003cb\u003eRCA 6L6GB\u003c\/b\u003e\u003c\/span\u003e are particularly suitable for amplifiers designed for:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003e6L6GB\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003e6L6GC\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003e5881\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e compatible variants of the 6L6 family\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p1\"\u003e They are appreciated in hi-fi systems where one seeks:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e natural musicality\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e timbre balance\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e rich and realistic media\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p1\"\u003e The \u003cspan class=\"s1\"\u003e\u003cb\u003eMatched Pair\u003c\/b\u003e\u003c\/span\u003e configuration contributes to stable and consistent performance between channels.\u003c\/p\u003e\n\n\u003ch3\u003e \u003cstrong\u003e🎸 Use in Music Applications\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n \u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eAlso highly prized in\u003c\/span\u003e \u003cb\u003evintage and boutique guitar amplifiers\u003c\/b\u003e \u003cspan class=\"s1\"\u003e, where\u003c\/span\u003e \u003cb\u003eRCA black plates\u003c\/b\u003e \u003cspan class=\"s1\"\u003eare known for:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e great harmonic richness\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e full and musical mids\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e progressive and natural dynamic response\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p4\"\u003e Qualities that contribute to a warm, articulate and deeply musical sound.\u003c\/p\u003e\n\n\u003ch3 data-start=\"3026\" data-end=\"3372\"\u003e \u003cstrong\u003e🎯 Note for audiophiles and technicians\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e\n\n \u003cb\u003eRCA\u003c\/b\u003e \u003cspan class=\"s1\"\u003eProduction\u003c\/span\u003e – Made in USA\n\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eBlack Plates\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eDouble Bottom Getter\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eMatched Pair\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eAMPLITREX AT-1000 Tested\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003eTest VERY STRONG\u003c\/b\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p3\"\u003e A pair representative of the great \u003cspan class=\"s2\"\u003e\u003cb\u003eRCA tradition in the production of power tubes\u003c\/b\u003e\u003c\/span\u003e , capable of offering reliability, musicality and the authentic sonic character of the best \u003cspan class=\"s2\"\u003e\u003cb\u003eAmerican 6L6GBs\u003c\/b\u003e\u003c\/span\u003e .\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e \u003cstrong\u003eTest Results:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp\u003e \u003cspan\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003e\u003c\/span\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 350; Vg2 = 250; Vg = -18V\u003cbr\u003e \u003cstrong\u003eAverage 100%\u003c\/strong\u003e Gm = 5.2 ; Ia = 54.0 mA\u003cbr\u003e \u003cstrong\u003eTEST RESULT:\u003c\/strong\u003e \u003cstrong\u003eVERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eValve 1:\u003c\/strong\u003e Gm = 4.66 ; Ia = 45.6 mA\u003cbr\u003e \u003cstrong\u003eValve 2:\u003c\/strong\u003e Gm = 4.78 ; Ia = 50.8 mA\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e \u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e\u003cmeta charset=\"utf-8\"\u003e Standard. Tested and approved for use in hi-fi and guitar amplifiers.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – ​​Very strong and stable output, no fluctuations.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e \u003cstrong\u003eConditions:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage tubes - Tested and in perfect working order. Shipped in our custom box for optimal protection.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e Fair – Writing almost completely faded. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e None. Unreadable, identifiable by construction features. \u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eMade by RCA USA, likely early 1950s.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Why our tubes are different – ​​the VTT protocol that improves sound, reliability and durability\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":56952385241436,"sku":"03457","price":219.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_b4ed61a1-9899-42e7-b4fc-0d035c50b266.jpg?v=1773055061","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/6l6gb-rca-black-plates-double-bottom-getter-matched-pair-amplitrex-tested-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}