{"product_id":"12at7-ecc81-raytheon-3-mica-black-wing-plates-square-tilt-getter-tested-tube-made-in-usa-50s-copia","title":"12AT7E E81CC NOS Sylvania – 3 Mica Gray Wing Plates Square Getter Tube USA 1946","description":"\u003cp\u003e\u003cstrong\u003e12AT7E ( ECC81 ) SYLVANIA NOS 3 Mica Gray Wing Plates Square Tilt Getter Tested Tube Made in USA '46\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"\" data-end=\"989\" data-start=\"481\"\u003eThe \u003cstrong data-end=\"504\" data-start=\"484\"\u003e12AT7E SYLVANIA\u003c\/strong\u003e , in the very first version from \u003cstrong data-end=\"544\" data-start=\"536\"\u003e1946\u003c\/strong\u003e , with \u003cstrong data-end=\"560\" data-start=\"550\"\u003e3 micas\u003c\/strong\u003e , \u003cstrong data-end=\"590\" data-start=\"562\"\u003egray wing-type plates\u003c\/strong\u003e and \u003cstrong data-end=\"615\" data-start=\"593\"\u003esquare tilt getter\u003c\/strong\u003e , is a tube of extraordinary historical and sonic value. Belonging to an extremely solid construction generation, this version stands out for its \u003cstrong data-end=\"800\" data-start=\"780\"\u003ebalanced voice\u003c\/strong\u003e , \u003cstrong data-end=\"835\" data-start=\"805\"\u003eprecise tonal structure\u003c\/strong\u003e and a \u003cstrong data-end=\"876\" data-start=\"842\"\u003ewell-modulated dynamic response\u003c\/strong\u003e , making it ideal for applications where transparency without dryness and musicality without coloration are desired.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1242\" data-start=\"991\"\u003e\u003cstrong data-end=\"1000\" data-start=\"991\"\u003eBass\u003c\/strong\u003e : defined, dry, and well-articulated. The low range is compact and controlled, free of exuberance, yet always present in a solid way and useful for the harmonic foundation of listening. Perfect for systems requiring rhythmic precision.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1513\" data-start=\"1244\"\u003e\u003cstrong data-end=\"1252\" data-start=\"1244\"\u003eMids\u003c\/strong\u003e : Transparent, tidy, and slightly silky. Voices emerge with balance and naturalness, without emphasis, maintaining intelligibility even in the most complex passages. Acoustic instruments are well-distributed, with a clear but not aggressive texture.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1730\" data-start=\"1515\"\u003e\u003cstrong data-end=\"1523\" data-start=\"1515\"\u003eHighs\u003c\/strong\u003e : Fine, controlled, and consistent. The high range extends delicately, never pushing forward or sounding harsh. The final effect is one of measured brilliance, always functional to the soundstage.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1995\" data-start=\"1732\"\u003e\u003cstrong data-end=\"1744\" data-start=\"1732\"\u003eDynamics\u003c\/strong\u003e : smooth, progressive, and musically refined. The tube responds promptly but never overemphatically. Micro-variations are clearly visible, and macro-dynamics develop in a balanced manner, making for a rich and never tiring listening experience.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"2214\" data-start=\"1997\"\u003e\u003cstrong data-end=\"2011\" data-start=\"1997\"\u003eSoundstage\u003c\/strong\u003e : Balanced, stable, with good lateral openness and realistic depth. Channel separation is clear, and the spatial focus maintains coherence even with complex sources.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"2601\" data-start=\"2216\"\u003eThe \u003cstrong data-end=\"2248\" data-start=\"2219\"\u003e1946 Sylvania 12AT7 E\u003c\/strong\u003e , in this rare tested and selected version, is a \u003cstrong data-end=\"2357\" data-start=\"2311\"\u003etransparent, fluid and tonally sober\u003c\/strong\u003e tube, capable of adapting to different applications with a versatile but always musical character. Particularly suitable for those who desire a \u003cstrong data-end=\"2532\" data-start=\"2506\"\u003eneutral but engaging\u003c\/strong\u003e presentation, without imbalances towards warmth or artificial brightness.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"2663\" data-start=\"2603\"\u003e🎧 \u003cstrong data-end=\"2663\" data-start=\"2606\"\u003eUse in Headphone Amplifiers and Hi-Fi Driver Stages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"3206\" data-start=\"2665\"\u003eThe \u003cstrong data-end=\"2688\" data-start=\"2668\"\u003e12AT7 E Sylvania\u003c\/strong\u003e finds its place in hi-fi systems that require \u003cstrong data-end=\"2792\" data-start=\"2733\"\u003estability, tonal balance and operational silence\u003c\/strong\u003e , especially in reference-class headphone amplifiers or sensitive gain stages. In \u003cstrong data-end=\"2921\" data-start=\"2906\"\u003emu-follower\u003c\/strong\u003e , \u003cstrong data-end=\"2943\" data-start=\"2923\"\u003ecathode follower\u003c\/strong\u003e or \u003cstrong data-end=\"2954\" data-start=\"2946\"\u003eSRPP\u003c\/strong\u003e configurations, it delivers a well-ordered soundstage, free from listening fatigue, with precise but not intrusive detail. Excellent synergy with headphones such as \u003cstrong data-end=\"3114\" data-start=\"3094\"\u003ethe Sennheiser HD600\u003c\/strong\u003e , \u003cstrong data-end=\"3130\" data-start=\"3116\"\u003eZMF Auteur\u003c\/strong\u003e , \u003cstrong data-end=\"3147\" data-start=\"3132\"\u003eFocal Clear\u003c\/strong\u003e , for those looking for \u003cstrong data-end=\"3205\" data-start=\"3163\"\u003elong, coherent and transparent listening sessions\u003c\/strong\u003e .\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"3256\" data-start=\"3208\"\u003e🎸 \u003cstrong data-end=\"3256\" data-start=\"3211\"\u003eUse in Guitar and Bass Amplifiers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"3836\" data-start=\"3258\"\u003eWhile less common than other versions for musical use, the \u003cstrong data-end=\"3349\" data-start=\"3320\"\u003eSylvania 12AT7 E '40s\u003c\/strong\u003e offers excellent performance as \u003cstrong data-end=\"3405\" data-start=\"3384\"\u003ea driver or inverter\u003c\/strong\u003e in vintage and reissue tube amplifiers. In amps like \u003cstrong data-end=\"3488\" data-start=\"3466\"\u003ethe Fender Twin Reverb\u003c\/strong\u003e , \u003cstrong data-end=\"3507\" data-start=\"3490\"\u003eDeluxe Reverb\u003c\/strong\u003e , or \u003cstrong data-end=\"3530\" data-start=\"3510\"\u003ePrinceton Reverb\u003c\/strong\u003e , it offers a \u003cstrong data-end=\"3576\" data-start=\"3554\"\u003efirm, articulate\u003c\/strong\u003e response, ideal for those seeking \u003cstrong data-end=\"3657\" data-start=\"3599\"\u003eclean headroom, defined attack, and dynamic control\u003c\/strong\u003e . Its tonal transparency also makes it ideal for \u003cstrong data-end=\"3732\" data-start=\"3713\"\u003etube bass\u003c\/strong\u003e , where a solid but not bloated low end is desired, useful for professional rigs and studio preamps.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"4174\" data-start=\"3838\"\u003e🎯 \u003cstrong data-end=\"3867\" data-start=\"3841\"\u003eNote for audiophiles\u003c\/strong\u003e :\u003cbr data-end=\"3871\" data-start=\"3868\"\u003eA \u003cstrong data-end=\"3918\" data-start=\"3883\"\u003ehistoric, neutral, and well-built\u003c\/strong\u003e tube, ideal for systems that aren't looking for easy euphony, but for \u003cstrong data-end=\"4033\" data-start=\"3994\"\u003ehonest, readable, and consistently musical\u003c\/strong\u003e behavior. Excellent as a starting point for comparative tests, for those seeking a \u003cstrong data-end=\"4139\" data-start=\"4107\"\u003enatural reference voice\u003c\/strong\u003e on which to build their own sound.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eValve tested on AMPLITREX 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 = -2V\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Gm = 5.5 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 6.3 ; Ia = 15.4 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 6.2 ; Ia = 12.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low Noise \u0026amp; Microphonics – Tested and compliant for use in hi-fi systems and guitar amplifiers.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – Very strong and stable output, no fluctuations.\u003cbr\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\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\u003eCondition:\u003c\/strong\u003e NOS - New Old Stock - Tested and in perfect working order. Comes in our custom box for optimal protection.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e Good – Lettering partially eroded, but still legible. Valve body in good condition. See photos for details.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e 644 - produced in the 44th week of 1946\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":54520323932508,"sku":"02916","price":59.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_26d56756-b693-459f-a37d-0c6431d7fa0d.jpg?v=1747232491","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/12at7-ecc81-raytheon-3-mica-black-wing-plates-square-tilt-getter-tested-tube-made-in-usa-50s-copia","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}