{"product_id":"6ca4-ez81-nos-nib-sylvania-gray-copper-plates-halo-getter-tested-tube-rectifier-made-in-usa","title":"6CA4 ( EZ81 ) NOS NIB SYLVANIA Gray Copper Plates Halo Getter Tested Tube Rectifier Made in USA","description":"\u003cp\u003e\u003cstrong\u003e6CA4 ( EZ81 ) NOS NIB SYLVANIA Gray Copper Plates Halo Getter Tested Tube Rectifier Made in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e6CA4 (EZ81) NOS NIB Sylvania\u003c\/strong\u003e , made in the USA, is a high-quality rectifier, known for its sturdy construction and distinctive sonic contribution. With gray copper plates and a ring getter ( \u003cstrong\u003eHalo Getter\u003c\/strong\u003e ), this tube ensures stable performance and well-balanced sound, making it ideal for vintage tube amplifiers and high-end Hi-Fi systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eLow End:\u003c\/strong\u003e Deep and controlled, with a tight, well-defined response that provides a solid, dynamic sound base. Perfect for genres that require precision and impact in the bass.\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, creating an immersive and detailed sound experience.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHighs:\u003c\/strong\u003e Clean and bright, with crystal clarity that highlights details without being fatiguing, maintaining a natural and balanced musical character.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003e6CA4 Sylvania Gray Copper Plates\u003c\/strong\u003e excels in its ability to create a wide and well-focused soundstage, with smooth dynamics and excellent instrument separation. This rectifier is an excellent choice for those seeking authentic, refined and musical sound for high-end audio applications. level.\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 = 74 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 = 82 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e Ia = 84 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 NR RAE - Undecipherable ( Export Quality )\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":"SYLVANIA","offers":[{"title":"Default Title","offer_id":53731417850204,"sku":"02666","price":39.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_fc52e633-9349-4486-95f7-175143067f9f.jpg?v=1735910417","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/6ca4-ez81-nos-nib-sylvania-gray-copper-plates-halo-getter-tested-tube-rectifier-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}