{"product_id":"6v6gt-sylvania-matched-pair-smoked-glass-chrome-top-black-plates-usa-amplitrex-tested","title":"6V6GT SYLVANIA Matched Pair - Smoked Glass - Chrome Top - Black Plates - USA - Amplitrex Tested","description":"\u003cp class=\"p1\"\u003e\u003cb\u003e6V6GT SYLVANIA Matched Pair – Smoked Glass – Black Plates – Halo Getter – Matched Pair – Made in USA ‘60s\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eVACUUM TUBES TREASURES Selection – Low Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eGeneral Description\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003epair of 6V6GT SYLVANIA Made in USA\u003c\/b\u003e\u003c\/span\u003e, carefully selected and offered as a \u003cspan class=\"s1\"\u003e\u003cb\u003eMatched Pair\u003c\/b\u003e\u003c\/span\u003e, represents one of the most authentic expressions of mid-century American production.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cspan class=\"s2\"\u003eThe tubes are \u003c\/span\u003e\u003cb\u003eidentifiable with certainty by their construction characteristics\u003c\/b\u003e\u003cspan class=\"s2\"\u003e, typical of Sylvania:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eSmoked Glass\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eChrome Top\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eBlack Plates\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eAn extremely popular configuration, both for its collectible appeal and sound performance, which places this pair among the most interesting variants of the 6V6 family.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003emarkings and manufacturing code are not present\u003c\/b\u003e\u003c\/span\u003e, as is often the case with vintage specimens, but identification remains clear and reliable thanks to the internal construction.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSonic Characteristics\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eBass: \u003c\/b\u003eFull and round, with a slightly softer structure compared to other productions, but always well controlled.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMids: \u003c\/b\u003eRich and textured, with a very musical and engaging delivery. Excellent presence on vocals.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHighs: \u003c\/b\u003eSweet and never aggressive, with a relaxed texture that encourages prolonged listening.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eDynamics: \u003c\/b\u003eNatural, with a progressive and musical response, ideal for those seeking fluidity rather than aggressiveness.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eSoundstage: \u003c\/b\u003eWide and airy, with good depth and separation.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eSuitable for 6V6 amplifiers where a \u003cspan class=\"s1\"\u003e\u003cb\u003ewarm, soft, and musical sound\u003c\/b\u003e\u003c\/span\u003e is desired, with great listening pleasure.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎸 Use in Musical Applications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eAlso very interesting for guitar amplifiers:\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eoffers a \u003cspan class=\"s1\"\u003e\u003cb\u003egradual breakup\u003c\/b\u003e\u003c\/span\u003e, natural compression, and a typically American vintage character.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎯 Note for Audiophiles and Technicians\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Smoked Glass Chrome Top\u003c\/b\u003e\u003c\/span\u003e are less common than other variants and represent a distinctive choice for those seeking \u003cspan class=\"s1\"\u003e\u003cb\u003ebalanced, refined, and non-fatiguing tonality\u003c\/b\u003e\u003c\/span\u003e, with solid and recognizable construction.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTube tested on \u003cstrong\u003eAMPLITREX AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003eVa = 250V; Vg2 = 250V; Vg = -12.5V \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eMeasurements taken after 10 minutes of warm-up.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Average:\u003c\/strong\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003eGm = 4.1 ; Ia = 45 mA\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eTube 1:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eGm = 3.9 ; Ia = 38.0 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eTube 2:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eGm = 3.2 ; Ia = 39.6 mA\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics: \u003c\/strong\u003eLow. Tested and compliant for hi-fi use even in phono stages and guitar amplifiers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"221\" data-end=\"371\"\u003e\n\u003cstrong data-start=\"223\" data-end=\"233\"\u003eCondition:\u003c\/strong\u003e Vintage Tubes - Tested and perfectly working. Supplied in our custom box for optimal protection. \u003c\/li\u003e\n\u003cli data-start=\"372\" data-end=\"456\"\u003e\n\u003cstrong data-start=\"374\" data-end=\"391\"\u003eFunctionality:\u003c\/strong\u003e Perfectly operational, with excellent test results.\u003c\/li\u003e\n\u003cli data-start=\"457\" data-end=\"672\"\u003e\n\u003cstrong data-start=\"459\" data-end=\"484\"\u003eCosmetic Condition:\u003c\/strong\u003e Very Good – no obvious defects. See photos for details.\u003cstrong data-start=\"675\" data-end=\"703\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong data-start=\"675\" data-end=\"703\"\u003eManufacturing code: \u003c\/strong\u003eabsent, identifiable by constructive characteristics. 1960s\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":57257403122012,"sku":"03504V","price":1435.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_ffdc7204-cd71-4ea9-8f62-d65c37a2db80.jpg?v=1775222421","url":"https:\/\/vacuumtubestreasures.com\/en-se\/products\/6v6gt-sylvania-matched-pair-smoked-glass-chrome-top-black-plates-usa-amplitrex-tested","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}