{"product_id":"6sn7-gtb-nos-nib-ge-coin-base-bridge-filament-gray-plates-halo-getter-matched-tubes-made-in-usa-1","title":"6SN7GTB NOS NIB GE Matched Quad Tubes – Coin Base Bridge Filament Gray Plates USA","description":"\u003cp\u003e\u003cstrong\u003e6SN7 GTB NOS NIB GE Coin Base Bridge Filament Gray Plates Halo Getter Matched Tubes Made in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in the USA\u003c\/strong\u003e , these 6SN7 GTB NOS NIB GE Coin Base with Gray Plates and Halo Getter deliver detailed, dynamic sound, perfect for Hi-Fi and tube amplifier applications. The Coin Base design and rugged construction with gray plates give these These valves deliver a balanced and precise sound signature, much appreciated by audio enthusiasts.\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 defined, with tight bass that provides a solid sonic foundation without being intrusive.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMidrange:\u003c\/strong\u003e Rich and natural, with a transparency that brings out vocals and acoustic instruments in an engaging way.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHigh range:\u003c\/strong\u003e Sweet and detailed, the high frequencies allow you to capture every nuance of sound without tiring your listener.\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 dynamics 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\u003cli\u003e\u003cstrong\u003eTest Result: VERY STRONG\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSection 1: Gm = 2700 ; Ia = 8.8 mA\u003c\/li\u003e\n\u003cli\u003eSection 2: Gm = 2800 ; Ia = 9.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSection 1: Gm = 2800 ; Ia = 9.8 mA\u003c\/li\u003e\n\u003cli\u003eSection 2: Gm = 2800 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 3:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSection 1: Gm = 2600 ; Ia = 8.2 mA\u003c\/li\u003e\n\u003cli\u003eSection 2: Gm = 2800 ; Ia = 9.4 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 4:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSection 1: Gm = 2800 ; Ia = 8.8 mA\u003c\/li\u003e\n\u003cli\u003eSection 2: Gm = 2700 ; Ia = 8.6 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAdditional tests performed:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMicrophone 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\u003eNOS NIB\u003c\/strong\u003e\u003cmeta charset=\"utf-8\"\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":"GE","offers":[{"title":"Default Title","offer_id":49602150990172,"sku":"02522L","price":16500.0,"currency_code":"ALL","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_770039d0-2286-4080-8361-3b6d2b08d5a9.jpg?v=1729787865","url":"https:\/\/vacuumtubestreasures.com\/en-al\/products\/6sn7-gtb-nos-nib-ge-coin-base-bridge-filament-gray-plates-halo-getter-matched-tubes-made-in-usa-1","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}