{"product_id":"5881-6l6wgb-rca-brown-base-matched-tubes-made-in-usa","title":"5881 ( 6L6WGB ) RCA Brown Base Matched Pair Vacuum Tubes Made in USA","description":"\u003cp\u003e\u003cstrong\u003e5881 ( 6L6WGB ) RCA Brown Base Matched Pair Vacuum Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN\u0026nbsp;USA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe 5881 is a ruggedized consumer version of comparable military quality.\u0026nbsp;It is known for its excellent music playback capabilities, longevity and solid construction features.\u0026nbsp;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThese tubes are recommended by OEMs for all TWEED\u0026nbsp;power amplifiers and can be used in Black Face\u0026nbsp;FENDER and other amplifiers, but not above 600V\u0026nbsp;high voltage B+\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTested\u0026nbsp;with AVO\u0026nbsp;VCM 163 Tube tester:\u003cbr\u003eOur instruments are calibrated with reference tubes.\u003cbr\u003eVf = 6.3V; Va = 300V; Vg2 = 200V; Vg1 = -12.5V\u003cbr\u003eAverage 100% Gm =\u0026nbsp;5300 ; Ia =\u0026nbsp;48 mA\u003cbr\u003e\u003cstrong\u003eTEST RESULT:\u0026nbsp;\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003eVERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValve 1:\u003cbr\u003eGm =\u0026nbsp;5000 ; Ia =\u0026nbsp;46 mA\u003cbr\u003eValve 2:\u003cbr\u003eGm =\u0026nbsp;5000\u003c\/span\u003e\u0026nbsp;; Ia =\u0026nbsp;47 mA\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFurther tests performed:\u003cbr\u003eMicrophony Test\u003cbr\u003eEmission Quality\u003cbr\u003eShort Circuit Test\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":46500872618332,"sku":"01367","price":99.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/1_68093553-0e2d-4c4b-bb44-846cd7b7c2b5.jpg?v=1682093605","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/5881-6l6wgb-rca-brown-base-matched-tubes-made-in-usa-en","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}