{"product_id":"rca-6l6gc-black-plates-double-side-d-getter-matched-pair-amplitrex-tested-made-in-usa-1961","title":"6L6GC RCA Black Plates Double Side D Getter – Matched Pair – Amplitrex Tested – Made in USA 1961","description":"\u003cp\u003e \u003cstrong\u003e6L6GC RCA Black Plates Double Side D Getter – Matched Pair – AMPLITREX Tested – Made in USA 1961 – VERY STRONG Test\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eThe two valves have an identical RCA construction (black plates with double side D getter) and are electrically coupled.\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eThere is a slight difference in the shape of the lower mica, a construction variation sometimes found in RCA production from the early 1960s, which does not affect performance or reliability.\u003c\/b\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 6L6GCs\u003c\/b\u003e\u003c\/span\u003e , produced in the USA in \u003cspan class=\"s1\"\u003e\u003cb\u003e1961\u003c\/b\u003e\u003c\/span\u003e , represents one of the most solid and appreciated versions of the famous American 6L6 family.\u003c\/p\u003e\n\n \u003cp class=\"p1\"\u003eThe construction with \u003cspan class=\"s1\"\u003e\u003cb\u003eblack plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003edouble-sided D getters\u003c\/b\u003e\u003c\/span\u003e is typical of RCA production in the early 1960s, a period in which the American company achieved one of its highest levels of construction quality and electrical stability. \u003cspan class=\"s1\"\u003e\u003cb\u003eBlack plates\u003c\/b\u003e\u003c\/span\u003e are particularly sought after by enthusiasts for their ability to deliver a rich, natural, and fully musical sound.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e The tubes 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, very high emission indication and stable electrical behavior.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e The \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 and well-structured. The low end is solid and authoritative, with excellent control and a good ability to sustain the rhythm without being intrusive.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eMids:\u003c\/b\u003e Warm, full, and very natural. Vocals emerge with presence and realism, while acoustic instruments and piano display a rich and believable harmonic texture.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eHighs:\u003c\/b\u003e Sweet and refined. The highs are well-extended yet controlled, with a fine grain that favors long, non-fatiguing listening sessions.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eDynamics:\u003c\/b\u003e Smooth and progressive. Transient response is natural and musical, with good microdynamics and a very balanced overall performance.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eSoundstage:\u003c\/b\u003e Wide and stable soundstage, with good depth and natural separation of instruments.\u003c\/p\u003e\n\n\u003ch3 data-end=\"2639\" data-start=\"2215\"\u003e 🎧 \u003cstrong data-end=\"2265\" data-start=\"2218\"\u003eUse in Push-Pull Stereo Hi-Fi Amplifiers\u003c\/strong\u003e\u003cbr data-end=\"2268\" data-start=\"2265\"\u003e\n\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e These \u003cspan class=\"s1\"\u003e\u003cb\u003eRCA 6L6GC\u003c\/b\u003e\u003c\/span\u003e are ideal for amplifiers designed for:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003e6L6GC\u003c\/b\u003e\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e \u003cb\u003e6L6GB\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\"\u003eother compatible variants of the 6L6 family\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p1\"\u003e They are particularly appreciated in hi-fi systems where the following are sought:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e timbre balance\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e natural musicality\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e great coherence in the midrange\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 harmonious richness\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e full and musical mids\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e progressive dynamic response\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p4\"\u003e Qualities that contribute to a warm, defined and authentically vintage sound.\u003c\/p\u003e\n\n\u003ch3 data-end=\"3372\" data-start=\"3026\"\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\u003eYear: 1961\u003c\/b\u003e\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 Side D 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\"\u003eA pair representative of the great RCA tradition in the production of power tubes, capable of offering reliability, musicality and the authentic sonic character of the best \u003cspan class=\"s2\"\u003e\u003cb\u003eAmerican 6L6GCs of the golden years\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\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\u003c\/span\u003e \u003cstrong\u003eVERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eValve 1:\u003c\/strong\u003e Gm = 4.92 ; Ia = 48.8 mA\u003cbr\u003e \u003cstrong\u003eValve 2:\u003c\/strong\u003e Gm = 4.57 ; Ia = 44.0 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\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\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\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e 61-04 274 → RMA\/EIA Open Date Code → Manufactured 4th week of 1961 - 274 → Radio Corporation of America, Camden, NJ\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cmeta charset=\"utf-8\"\u003e 61-39 274 → RMA\/EIA Open Date Code → Manufactured 39th week of 1961 - 274 → Radio Corporation of America, Camden, NJ\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\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\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":56953236226396,"sku":"03458","price":239.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_932b95b1-08a3-4dfb-b611-021d4f0a6857.jpg?v=1773062759","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/rca-6l6gc-black-plates-double-side-d-getter-matched-pair-amplitrex-tested-made-in-usa-1961","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}