{"product_id":"12au7-a-ecc82-rca-nos-long-gray-plates-halo-getter-matched-tubes-made-in-usa-4","title":"12AU7A ECC82 NOS RCA Matched Pair Tubes – Long Gray Plates Halo Getter USA","description":"\u003cp\u003e\u003cstrong\u003e12AU7A ( ECC82 ) RCA NOS Long Gray Plates Halo Getter Matched Tubes\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eThese tubes are renowned for their rich, warm tone, with a smooth, harmonious soundstage. They offer extraordinary transparency in the midrange, combined with deep, controlled bass. High-frequency detail is precise, yet never fatiguing, making them perfect for extended listening sessions.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e Worn logos as shown in the photo\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTested on Amplitrex AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003e Voltage Test: Va = 250V, Vg = -8.5V\u003cbr\u003e AVERAGE 100% Gm = 2200 ; Ia = 10.5 mA\u003cbr\u003e \u003cstrong\u003eTEST RESULT: VERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e Valve 1:\u003cbr\u003e Section 1: Gm = 2150 ; Ia = 9.8 mA\u003cbr\u003e Section 2: Gm = 2250 ; Ia = 12.8 mA\u003cbr\u003e Valve 2:\u003cbr\u003e Section 1: Gm = 2050 ; Ia = 9.4 mA\u003cbr\u003e Section 2: Gm = 2250 ; Ia = 12.6 mA\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e Further tests performed:\u003cbr\u003e Microphone Test\u003cbr\u003e Emission Quality\u003cbr\u003e Short Circuit Test\u003cbr\u003e GAS Test\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":49469141746012,"sku":"02460U","price":44.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_82a8474f-ef52-42fa-b067-601cdebd1537.jpg?v=1727877296","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/12au7-a-ecc82-rca-nos-long-gray-plates-halo-getter-matched-tubes-made-in-usa-4","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}