{"product_id":"6v6g-rca-radiotron-matched-pair-smoked-glass-black-plates-foil-getter-same-factory-code-usa-amplitrex-tested","title":"6V6G RCA Radiotron Matched Pair - Smoked Glass Black Plates Foil Getter - Same Factory Code - USA '50s - AMPLITREX Tested","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"s1\"\u003e6V6G RCA Radiotron – Matched Pair – Smoked Glass – Black Plates – Foil Getter – USA ’50s\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"s1\"\u003eSame Factory Code XE5 – AMPLITREX Tested – Matched Pair – Low Noise \u0026amp; Microphonics\u003c\/span\u003e\u003c\/strong\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 6V6G RCA Radiotron – Made in USA in the 1950s\u003c\/b\u003e\u003c\/span\u003e represents one of the most authentic expressions of vintage American production, appreciated for its construction, musicality, and long-term reliability.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe presence of the \u003cspan class=\"s1\"\u003e\u003cb\u003eXE5 factory code\u003c\/b\u003e\u003c\/span\u003e on both tubes allows for a conservative dating around \u003cspan class=\"s1\"\u003e\u003cb\u003eSeptember\/October 1954\u003c\/b\u003e\u003c\/span\u003e, a detail of particular interest to collectors and enthusiasts.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe construction configuration is among the most sought-after:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSmoked Glass\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBlack Plates\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFoil Getter\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003eproduction \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003eRCA Radiotron USA\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eThis combination identifies a tube with a rich and full-bodied sonic character, typical of true first-generation American 6V6s.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eThe pair has been \u003cspan class=\"s1\"\u003e\u003cb\u003eselected and matched using an Amplitrex AT-1000\u003c\/b\u003e\u003c\/span\u003e, resulting in a \u003cspan class=\"s1\"\u003e\u003cb\u003etrue matched pair\u003c\/b\u003e\u003c\/span\u003e, with extremely close values and consistent electrical behavior.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSound Characteristics\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe 6V6G RCA Radiotron tubes are distinguished by a \u003cspan class=\"s1\"\u003e\u003cb\u003ewarm, natural, and engaging presentation\u003c\/b\u003e\u003c\/span\u003e, with a rendition that prioritizes musicality without sacrificing control.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFull-bodied and well-articulated, with a solid yet always controlled presence. They offer a stable harmonic foundation, without excess.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eRich and full-bodied, with a particularly pleasing rendition for vocals and acoustic instruments. The timbre is natural and fluid.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHighs\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eSweet and refined, never aggressive. The extension is balanced and contributes to an overall harmonious rendition.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eSmooth and progressive, with a natural and never forced transient response. Excellent ability to follow the signal consistently.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eBroad and credible, with good depth and well-defined instrument separation.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis pair is perfectly suited for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esingle-ended and push-pull amplifiers\u003c\/li\u003e\n\u003cli\u003ecompatible vintage and modern systems\u003c\/li\u003e\n\u003cli\u003econtexts where musicality and naturalness are sought\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eThe consistency between the tubes and RCA's build quality ensures stable and reliable performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎸 Use in Musical Applications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIn musical contexts, these 6V6G tubes offer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eprogressive dynamic response\u003c\/li\u003e\n\u003cli\u003enatural and musical breakup\u003c\/li\u003e\n\u003cli\u003eexcellent handling of expressive nuances\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eParticularly suitable for guitar amplifiers where a \u003cspan class=\"s1\"\u003e\u003cb\u003ewarm, full, and organic sound\u003c\/b\u003e\u003c\/span\u003e is desired.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎯 Note for Audiophiles and Technicians\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eRCA Radiotron – Made in USA 1950s\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCode XE5 – same manufacture (circa 1954)\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSmoked Glass – Black Plates – Foil Getter\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTrue Matched Pair (selected on Amplitrex)\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p2\"\u003eA pair that embodies the charm and substance of classic RCA production, ideal for those seeking \u003cspan class=\"s1\"\u003e\u003cb\u003econsistency, musicality, and sonic authenticity\u003c\/b\u003e\u003c\/span\u003e, capable of restoring the \u003cspan class=\"s1\"\u003e\u003cb\u003eauthentic voice of American RCA tradition\u003c\/b\u003e\u003c\/span\u003e.\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\u003eAverage 100%:\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 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 = 3.49 ; Ia = 37.6 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 = 3.57 ; Ia = 36.4 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 use in hi-fi, including phono stages, and in 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\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"371\" data-start=\"221\"\u003e\n\u003cstrong data-end=\"233\" data-start=\"223\"\u003eCondition:\u003c\/strong\u003e Vintage Tubes - Tested and fully functional. Supplied in our custom box for optimal protection. \u003c\/li\u003e\n\u003cli data-end=\"456\" data-start=\"372\"\u003e\n\u003cstrong data-end=\"391\" data-start=\"374\"\u003eFunctionality:\u003c\/strong\u003e Perfectly operational, with excellent test results.\u003c\/li\u003e\n\u003cli data-end=\"672\" data-start=\"457\"\u003e\n\u003cstrong data-end=\"484\" data-start=\"459\"\u003eCosmetic Condition:\u003c\/strong\u003e Excellent – Markings excellently preserved, minimal signs of age. See photos for details.\u003c\/li\u003e\n\u003cli data-end=\"672\" data-start=\"457\"\u003e\n\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e XE5 - Made in USA - likely in 1954, code XE5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":57469003628892,"sku":"03553Q","price":229.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_5fb52e63-18c5-4d23-97c0-31b267efa8f5.jpg?v=1777284640","url":"https:\/\/vacuumtubestreasures.com\/en-cy\/products\/6v6g-rca-radiotron-matched-pair-smoked-glass-black-plates-foil-getter-same-factory-code-usa-amplitrex-tested","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}