{"product_id":"6x4-ez90-nos-nib-dumont-black-plates-halo-getter-tested-tube-rectifier-made-in-usa-69","title":"6X4 ( EZ90 ) NOS NIB DUMONT Black Plates Halo Getter Tested Tube Rectifier Made in USA '69","description":"\u003cp\u003e\u003cstrong\u003e6X4 ( EZ90 ) NOS NIB DUMONT Black Plates Halo Getter Tested Tube Rectifier Made in USA '69\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e6X4 (EZ90) NOS NIB DuMont\u003c\/strong\u003e , produced in the USA in 1969 at the Sylvania works, combines the reliability of American tubes with the characteristic Sylvania build quality. Featuring \u003cstrong\u003eblack plates\u003c\/strong\u003e and a \u003cstrong\u003eHalo Getter\u003c\/strong\u003e , this compact rectifier offers a sound balanced and musical, ideal for vintage tube amplifiers and high-end Hi-Fi systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eLow range:\u003c\/strong\u003e Deep and controlled, with a tight response that provides a stable and precise sound base, ideal for musical genres with incisive dynamics.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMidrange:\u003c\/strong\u003e Warm and transparent, with a natural harmonic rendition that enhances vocals and acoustic instruments, offering a rich and engaging sound experience.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHigh range:\u003c\/strong\u003e Refined and crystalline, with a balanced brilliance that enhances the details without tiring the listener, maintaining an elegant and natural musical character.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003e6X4 DuMont Black Plates\u003c\/strong\u003e stands out for its ability to create a three-dimensional and well-focused soundstage, with excellent instrument separation and fluid dynamics. Being a Sylvania production for DuMont, this tube represents a combination of robustness and musicality, perfect for enthusiasts. of vintage audio.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eValve tested on Funke W19 Tube Tester:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 60V, Vf = 6.3V\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Ia = \u003cmeta charset=\"utf-8\"\u003e\u003c!-- x-tinymce\/html --\u003e42 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eValve 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e Ia = 49 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e Ia = 48 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCosmetic Condition:\u003c\/strong\u003e NOS - NIB - New Old Stock, New In Box - Tested and working - In original box.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e 312 69-02 - 2nd week of 1969\u003c\/li\u003e\n\u003c\/ul\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":"DUMONT","offers":[{"title":"Default Title","offer_id":53732905550172,"sku":"02671S","price":1900.0,"currency_code":"ALL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/4_064a6264-6575-4857-88a5-03b977cc7df0.jpg?v=1735925884","url":"https:\/\/vacuumtubestreasures.com\/en-al\/products\/6x4-ez90-nos-nib-dumont-black-plates-halo-getter-tested-tube-rectifier-made-in-usa-69","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}