{"product_id":"6sn7gta-nos-majestic-by-sylvania-chrome-top-amplitrex-tested-tube-made-in-usa-50s","title":"6SN7GTA NOS MAJESTIC by SYLVANIA CHROME TOP AMPLITREX Tested Tube Made in USA '50s","description":"\u003cp\u003e\u003cstrong\u003e6SN7GTA NOS MAJESTIC by SYLVANIA CHROME TOP AMPLITREX Tested Tube Made in USA '50s\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e6SN7GTA NOS Majestic by Sylvania\u003c\/b\u003e\u003c\/span\u003e, produced in the United States in the 1950s, represents an excellent example of American manufacturing quality of the era, combined with the allure of rebrands intended for the hi-fi and professional markets.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eUnder the brand \u003cspan class=\"s1\"\u003e\u003cb\u003eMajestic – “Mighty Monarch of the Air”\u003c\/b\u003e\u003c\/span\u003e, we find a tube manufactured by \u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania USA\u003c\/b\u003e\u003c\/span\u003e, recognizable by its typical internal architecture and the iconic \u003cspan class=\"s1\"\u003e\u003cb\u003eChrome Top\u003c\/b\u003e\u003c\/span\u003e, one of the most appreciated hallmarks of Sylvania's production during those years.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eConstruction features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eChrome Top (extended top getter flashing)\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eRobust and symmetrical internal structure\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eUSA production from the 1950s, a benchmark period for quality and reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eThe Chrome Top, in addition to its strong aesthetic impact, indicates excellent internal vacuum quality, contributing to operational stability and long lifespan.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe tube has been tested in our laboratory with \u003cspan class=\"s1\"\u003e\u003cb\u003eAmplitrex AT-1000\u003c\/b\u003e\u003c\/span\u003e, achieving a \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e rating, and has been verified for \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e, making it perfectly suitable even for more sensitive applications.\u003c\/p\u003e\n\u003ch3 class=\"p1\"\u003e\u003cb\u003eSonic Characteristics\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eThe 6SN7GTA Sylvania Chrome Top tubes are known for an \u003cspan class=\"s1\"\u003e\u003cb\u003eopen, refined, and highly musical sound\u003c\/b\u003e\u003c\/span\u003e, with an extremely balanced rendition.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eControlled, fast, and well-articulated, with excellent intelligibility even in the most complex lines.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMidrange\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eNatural and transparent, with an extremely credible and engaging vocal rendition.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eTreble\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eExtended and airy, with excellent brightness but always free from harshness.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eResponsive and fluid, with excellent ability to follow micro-variations in the signal.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eWide and three-dimensional, with precise placement of instruments in space.\u003c\/p\u003e\n\u003ch3 data-end=\"2713\" data-start=\"2348\"\u003e🎧 \u003cstrong data-end=\"2398\" data-start=\"2351\"\u003eUsage in Hi-Fi Stereo Amplifiers\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003ePerfect for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003ehigh-end preamplifiers\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eintegrated and power amplifiers with 6SN7 drivers\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ebuffers and line stages\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eIdeal for systems requiring \u003cspan class=\"s2\"\u003e\u003cb\u003etransparency, a wide soundstage, and great definition\u003c\/b\u003e\u003c\/span\u003e, without sacrificing the musicality typical of American NOS tubes.\u003c\/p\u003e\n\u003ch3 data-end=\"3044\" data-start=\"2715\"\u003e🎸 \u003cstrong data-end=\"2756\" data-start=\"2718\"\u003eUsage in Instrument Amplifiers\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIn a musical context, it offers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003egreat clarity and definition\u003c\/li\u003e\n\u003cli class=\"p1\"\u003econtrolled dynamic response\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eexcellent frequency separation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eSuitable for configurations where \u003cspan class=\"s2\"\u003e\u003cb\u003eprecision and signal clarity\u003c\/b\u003e\u003c\/span\u003e are required, while maintaining a pleasant and non-fatiguing sonic character.\u003c\/p\u003e\n\u003ch3 data-end=\"3436\" data-start=\"3046\"\u003e🎯 \u003cstrong data-end=\"3081\" data-start=\"3049\"\u003eNote for audiophiles and technicians\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e6SN7GTA Majestic by Sylvania Chrome Top\u003c\/b\u003e\u003c\/span\u003e represents a choice of great technical and collector's interest.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Majestic brand adds an extra layer of historical charm, while the 1950s Sylvania construction guarantees high standards in terms of materials and reliability.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cspan class=\"s2\"\u003eThe \u003c\/span\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003cspan class=\"s2\"\u003e test on Amplitrex, combined with the \u003c\/span\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003cspan class=\"s2\"\u003e verification, confirms a tube that is \u003c\/span\u003e\u003cb\u003estable, quiet, and ready for use even in sensitive circuits\u003c\/b\u003e\u003cspan class=\"s2\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAn ideal solution for those who want to integrate into their system a \u003cspan class=\"s1\"\u003e\u003cb\u003e6SN7 with an open, precise, and three-dimensional sound\u003c\/b\u003e\u003c\/span\u003e, with all the authenticity of great vintage American production.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp data-end=\"3436\" data-start=\"3046\"\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTubes tested on \u003cstrong\u003eAmplitrex AT-1000\u003c\/strong\u003e Tube tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V, Vg = -8V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage 100%\u003c\/strong\u003e \u003cstrong\u003eGm = 2600 ; Ia = 9.0 mA\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSection 1: Gm = 2600 ; Ia = 7.4 mA\u003c\/li\u003e\n\u003cli\u003eSection 2: Gm = 2500 ; Ia = 7.2 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low Noise \u0026amp; Microphonics – Tested and suitable for use in hi-fi systems and guitar amplifiers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Sections are consistent and well-aligned, making the tube suitable for use as a phase inverter in hi-fi and instrumental applications.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\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\n\u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - New Old Stock - Tested and working - Supplied in our custom box for optimal protection. \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e\u003cspan\u003e Excellent – Markings excellently preserved, minimal signs of age. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eManufacturing Code:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e312 352 - \u003cstrong data-end=\"349\" data-start=\"336\"\u003e312\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ EIA code Sylvania Electric Products Inc., New York 19, N. Y. - \u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"317\" data-start=\"310\"\u003e352\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e→ 52nd week of 1953\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":57057346912604,"sku":"03478","price":69.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_d34d2a8f-f24a-4474-bbc7-ba2a696a04a6.jpg?v=1773909910","url":"https:\/\/vacuumtubestreasures.com\/en-cy\/products\/6sn7gta-nos-majestic-by-sylvania-chrome-top-amplitrex-tested-tube-made-in-usa-50s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}