{"product_id":"12at7-ecc81-zenith-nos-nib-gray-plates-square-getter-tested-tube-made-in-usa","title":"12AT7 ECC81 NOS NIB ZENITH Tested Tube – Wing Gray Plates USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AT7 ( ECC81 ) ZENITH NOS NIB Wing Gray Plates Square Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufactured by SYLVANIA for ZENITH in the United States of America\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e12AT7 (ECC81) ZENITH NOS NIB Wing Gray Plates Square Getter\u003c\/strong\u003e tubes, manufactured by \u003cstrong\u003eSylvania\u003c\/strong\u003e and labeled for \u003cstrong\u003eZENITH\u003c\/strong\u003e , offer a sound of remarkable quality, characterized by remarkable definition and transparency. Thanks to the wing-shaped \u003cstrong\u003eGray Plates\u003c\/strong\u003e configuration and the \u003cstrong\u003eSquare Getter\u003c\/strong\u003e , these tubes tend to provide an open and bright sound, with excellent separation of sonic details. In the high frequency register, a particular clarity and precision can be noted, making them ideal for those looking for an airy sound free from harshness. The mids are well balanced, with a natural rendition of voices and instruments, while the low frequencies are present but not invasive, ensuring optimal control of the sound without sacrificing depth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -2V\u003cbr\u003eAverage 100% Gm = 5.5 ; Ia = 10 mA\u003cbr\u003e\u003cstrong\u003eTEST RESULT: VERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSection 1: Gm = 6.2 ; Ia = 10.6 mA\u003cbr\u003eSection 2: Gm = 6.3 ; Ia = 10.8 mA\u003c\/p\u003e\n\u003cp\u003eFurther tests performed:\u003cbr\u003eMicrophone Test\u003cbr\u003eEmission Quality\u003cbr\u003eShort Circuit Test\u003cbr\u003eGAS Test\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":"ZENITH","offers":[{"title":"Default Title","offer_id":49438424891740,"sku":"02450M","price":29.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_3585b8ee-2c99-475f-9b90-3f76020e3b07.jpg?v=1727445022","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/12at7-ecc81-zenith-nos-nib-gray-plates-square-getter-tested-tube-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}