{"product_id":"2a3-vt-95-rca-bi-plates-black-plates-dual-bottom-getter-matched-tubes-made-in-usa-50s-copy","title":"12B4A GE NOS Black Plates Halo Getter Low Noise \u0026amp; Microphonic Matched Pair Tubes Made in USA","description":"\u003cp\u003e\u003cstrong\u003e12B4A GE NOS Black Plates Halo Getter Low Noise \u0026amp; Microphonic Matched Pair Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow Noise \u0026amp; Microphonics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWorn logos as per photo\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIn Box Aftermarket\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 150V, Vg = -17.5V\u003cbr\u003eAVERAGE 100% Gm = 6.4 ; Ia = 34 mA\u003cbr\u003e\u003cstrong\u003eTEST RESULT: VERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValve 1: Gm = 6.0 ; Ia = 33 mA\u003cbr\u003eValve 2: Gm = 6.1 ; Ia = 34 mA\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFurther tests performed:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMicrophone Test\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eEmission Quality\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eShort Circuit Test\u003c\/span\u003e\u003cbr\u003eGAS Test\u003c\/p\u003e\n\u003cp\u003e\u003cspan\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\/span\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":49383587414364,"sku":"02417M","price":24.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_94917072-a098-403e-9111-b7721d2fc8e8.jpg?v=1726650179","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/2a3-vt-95-rca-bi-plates-black-plates-dual-bottom-getter-matched-tubes-made-in-usa-50s-copy","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}