{"product_id":"6bq5-el84-rca-nos-nib-gray-plates-matched-pair-tubes-made-in-usa-63","title":"6BQ5 ( EL84 ) RCA NOS NIB Gray Plates Disc Halo Getter Matched Pair Tubes Made in USA '63","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cstrong\u003e6BQ5 ( EL84 ) RCA NOS NIB Gray Plates Disc Halo Getter Matched Pair Tubes MADE IN USA '63\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProduced by RCA in the U.S.A.\u003cbr\u003eLogos worn as per photo\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eThese tubes have been carefully selected to ensure maximum coherence and audio performance. Ideal for enthusiasts looking to improve the sound quality of their amplifiers. EL84 RCA Gray Plates are renowned for their ability to deliver warm, detailed tones while maintaining a balanced and precise response. Each pair has been precisely tested and matched to ensure maximum compatibility and optimal performance. This perfect pairing allows for a balanced and synchronized sound performance, elevating the listening experience to a higher level. Perfect for any vintage or modern amp. These tubes are becoming increasingly rare.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg2 = 250V, Vg1 = -7.3V\u003cbr\u003eAverage 100% Gm = 11.3 ; Ia = 48 mA\u003cbr\u003e\u003cstrong\u003eTEST RESULT: VERY STRONG\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValve 1: Gm 11.0 ; Ia = 44 mA\u003cbr\u003eValve 2: Gm 9.6; Ia = 44 mA\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eFurther tests performed:\u003cbr\u003eMicrophony Test\u003cbr\u003eEmission Quality\u003cbr\u003eShort Circuit Test\u003cbr\u003eGAS Test\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\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":49238659400028,"sku":"02380","price":84.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_a7d574b7-94c0-41ef-9894-2665eb1188ef.jpg?v=1724234271","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/6bq5-el84-rca-nos-nib-gray-plates-matched-pair-tubes-made-in-usa-63-en","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}