{"product_id":"6ca4-ez81-nos-nib-mullard-for-sylvania-gray-plates-horse-shoe-getter-tested-tube-rectifier-made-in-gt-britain-65","title":"6CA4 ( EZ81 ) NOS NIB SYLVANIA by MULLARD Blackburn Gray Plates Horse Shoe Getter Tested Tube Rectifier Made in GT. Britain '65","description":"\u003cp\u003e\u003cstrong\u003e6CA4 ( EZ81 ) NOS NIB SYLVANIA by MULLARD Blackburn Gray Plates Horse Shoe Getter Tested Tube Rectifier Made in GT. Britain '65\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 by Mullard Blackburn\u003c\/strong\u003e , manufactured in Blackburn, Great Britain, in 1965, is a legendary rectifier known for its musical and refined sound contribution. Made with grey plates and a horseshoe-shaped getter ( \u003cstrong\u003eHorse Shoe Getter\u003c\/strong\u003e ), this valve combines Mullard quality with Sylvania reliability, offering a warm, detailed and balanced sound. Ideal for vintage valve amplifiers and high-end Hi-Fi systems, it guarantees excellent performance both in terms of musicality and of precision.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eLow range:\u003c\/strong\u003e Deep and well-defined, with a controlled response that provides a stable and dynamic sound base. Ideal for a full-bodied and articulate sound.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMidrange:\u003c\/strong\u003e Warm and transparent, with a rich and natural harmonic rendition that enhances vocals and acoustic instruments, creating an engaging and detailed sound experience.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHighs:\u003c\/strong\u003e Refined and brilliant, with a balanced clarity that enhances details without ever being fatiguing, maintaining a pleasant and natural musicality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003e6CA4 Sylvania by Mullard Blackburn\u003c\/strong\u003e stands out for its ability to create a wide and three-dimensional soundstage, with excellent instrument separation and fluid dynamics. This tube is an excellent choice for those looking for an authentic, musical sound with the charm timeless Mullard valves.\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 = 86 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e Ia = 88 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 B5C3 = 3rd Week of March 1965\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":53726153015644,"sku":"02665","price":89.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/6_15528322-6777-48c8-9ec5-50936bc02401.jpg?v=1735837680","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/6ca4-ez81-nos-nib-mullard-for-sylvania-gray-plates-horse-shoe-getter-tested-tube-rectifier-made-in-gt-britain-65","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}