{"product_id":"6sn7-gtb-nos-nib-sylvania-black-plates-halo-getter-tested-tube-made-in-usa","title":"6SN7GTB NOS NIB Sylvania – Black Plates Halo Getter Tested Tube USA","description":"\u003cp\u003e\u003cstrong\u003e6SN7 GTB NOS NIB SYLVANIA Black Plates Halo Getter\u0026nbsp;Tested Tube Made in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in the USA\u003c\/strong\u003e , these 6SN7 GTB SYLVANIA with Black Plates and Halo Getter are NOS NIB selected \u003cmeta charset=\"utf-8\"\u003etubes, ideal for Hi-Fi applications and high quality tube amplifiers. They offer a refined and detailed sound, much appreciated by demanding audiophiles. .\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eLow range:\u003c\/strong\u003e Deep and well controlled, offering a solid sound base without being intrusive.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMidrange:\u003c\/strong\u003e Rich and transparent, perfect for enhancing vocals and acoustic instruments, creating an immersive sound experience.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHighs:\u003c\/strong\u003e Detailed and sweet, with a brightness that is not tiring to listen to, allowing you to capture every nuance of the recording.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOverall Sound Signature:\u003c\/strong\u003e These tubes deliver a wide, three-dimensional soundstage, with excellent instrument separation and optimal dynamic handling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValves tested on \u003cstrong\u003eAmplitrex AT-1000 Tube tester\u003c\/strong\u003e :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V, Vg = -8V\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100% Gm = 2600 ; Ia = 9.0 mA\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSection 1: Gm =\u0026nbsp;2600 ; Ia =\u0026nbsp;8,6 mA\u003c\/li\u003e\n\u003cli\u003eSection 2: Gm =\u0026nbsp;2600 ; Ia =\u0026nbsp;9,2 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAdditional tests performed:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMicrophonics Test\u003c\/li\u003e\n\u003cli\u003eEmission Quality\u003c\/li\u003e\n\u003cli\u003eShort Circuit Test\u003c\/li\u003e\n\u003cli\u003eGAS Test\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOUR NIB\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\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\"\u003eFind out why our valves are different →\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":49626084507996,"sku":"02531","price":34.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_dd19befd-6a78-44fa-8ded-059350e49ee1.jpg?v=1730129348","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/6sn7-gtb-nos-nib-sylvania-black-plates-halo-getter-tested-tube-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}