{"product_id":"12ax7-ecc83-nos-baldwin-by-sylvania-long-gray-plates-large-halo-getter-matched-tubes-made-in-usa-49-copia","title":"12AX7 ECC83 NOS Baldwin by Sylvania - Long Gray Plates Large Halo Getter Tested Tube USA 1959","description":"\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7 \/ ECC83 NOS Baldwin by SYLVANIA Gray Plates Halo Getter Made in USA 1959\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eAMPLITREX Tested – Vintage American Sylvania Production\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eGeneral Description\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eThis\u003cspan class=\"s1\"\u003e\u003cb\u003e 12AX7 \/ ECC83 Baldwin by Sylvania\u003c\/b\u003e\u003c\/span\u003e, produced in the USA in 1959, represents one of the most highly regarded American interpretations of the famous ECC83.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eTubes branded\u003cspan class=\"s1\"\u003e\u003cb\u003e Baldwin\u003c\/b\u003e\u003c\/span\u003e were intended for the high-end electronic organs of the era and were selected by manufacturers who demanded reliability, low noise, and long operational life. Behind the Baldwin brand, in this case, we find the renowned\u003cspan class=\"s1\"\u003e\u003cb\u003e SYLVANIA Made in USA\u003c\/b\u003e\u003c\/span\u003e production, recognizable by its construction with\u003cspan class=\"s1\"\u003e\u003cb\u003e Gray Plates\u003c\/b\u003e\u003c\/span\u003e and\u003cspan class=\"s1\"\u003e\u003cb\u003e Halo Getter\u003c\/b\u003e\u003c\/span\u003e, a configuration particularly appreciated by enthusiasts for its tonal balance and natural musicality.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eSylvania Gray Plates from the early '60s are known for their ability to combine detail, openness, and naturalness, offering an engaging yet never artificial reproduction.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThis tube has been carefully verified using an\u003cspan class=\"s1\"\u003e\u003cb\u003e AMPLITREX AT-1000\u003c\/b\u003e\u003c\/span\u003e, testing\u003cspan class=\"s1\"\u003e\u003cb\u003e VERY STRONG\u003c\/b\u003e\u003c\/span\u003e, with performance exceeding nominal reference values.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eAesthetically, it is in\u003cspan class=\"s1\"\u003e\u003cb\u003e excellent condition\u003c\/b\u003e\u003c\/span\u003e, with a well-preserved internal structure and still legible silk-screen printing.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSonic Characteristics\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eBaldwin by Sylvania Gray Plates possess the typical high-quality American sonic character, characterized by balance, musicality, and excellent intelligibility.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe bass is well-controlled and defined, with good presence and articulation. It provides solidity to the low end without weighing down the musical message.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe midrange is likely the strong point of this production. Vocals appear natural, rich in harmonics, and well-focused in the soundstage.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTreble\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe treble is open and detailed, but never aggressive. Environmental information and finer nuances are reproduced with naturalness and fluidity.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe dynamics are swift and lively, with an engaging musical response that enhances both small ensembles and large orchestras.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eThe soundstage is wide and well-organized, with good depth and accurate placement of instruments.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p5\"\u003eThis tube is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eTube preamplifiers\u003c\/li\u003e\n\n\u003cli\u003eIntegrated hi-fi amplifiers\u003cbr\u003e\n\u003c\/li\u003e\n\n\u003cli\u003eTube DACs\u003c\/li\u003e\n\n\u003cli\u003eBuffers and line stages\u003c\/li\u003e\n\n\u003cli\u003eRestoration of vintage American electronics\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎸 Use in Musical Applications\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p5\"\u003eBaldwin by Sylvania Gray Plates are also highly valued by musicians due to their ability to offer:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eExcellent note definition\u003c\/li\u003e\n\n\u003cli\u003eRich and musical mids\u003c\/li\u003e\n\n\u003cli\u003eNatural dynamic response\u003c\/li\u003e\n\n\u003cli\u003eOpen but not aggressive sound\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p4\"\u003eParticularly interesting for guitar amplifiers that require clarity, articulation, and vintage American musicality.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎯 Note for audiophiles and collectors\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eAuthentic\u003cspan class=\"s1\"\u003e\u003cb\u003e Sylvania Gray Plates from the late 1950s\u003c\/b\u003e\u003c\/span\u003e, especially when available with the Baldwin brand and in such well-preserved condition, represent a very interesting choice for those who desire the classic vintage American sound.\u003c\/p\u003e\n\u003cp class=\"p5\"\u003eThe combination of:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eSYLVANIA Made in USA production\u003c\/li\u003e\n\n\u003cli\u003eGray Plates\u003c\/li\u003e\n\n\u003cli\u003eHalo Getter\u003cbr\u003e\n\u003c\/li\u003e\n\n\u003cli\u003eVERY STRONG performance\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p4\"\u003emakes this tube ideal for both quality hi-fi listening and for collectors and enthusiasts of American tube electronics.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTube tested on\u003cstrong\u003e AMPLITREX AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V; Vg = -2V\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Gm = 1600; Ia = 1.2 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 1700; Ia = 1.2 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 1900; Ia = 1.4 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eMicrophony:\u003c\/strong\u003e Standard. Normal for this type of tube. Suitable for line stages, drivers, and applications not sensitive to background noise.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eBalance:\u003c\/strong\u003e Good. The sections show consistent balance, fully compatible for use in hi-fi and musical amplifiers, in all applications where absolute symmetry between sections is not required.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - New Old Stock - Tested and functional - Supplied in our custom box for optimal protection.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eAesthetic Condition:\u003c\/strong\u003e Excellent – Markings excellently preserved, minimal signs of age. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eManufacturing Code: \u003c\/strong\u003e312 913 → 312 indicates the manufacturer, Sylvania Electric Products Inc., Emporium, Pa. - 913 → 49 (on three digits) → 1959 - 13 → 13th week of the year\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" 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":54080005996892,"sku":"02796","price":69.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_acfb7fd9-47fe-4664-a3ea-deb296de2649.jpg?v=1740991983","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/12ax7-ecc83-nos-baldwin-by-sylvania-long-gray-plates-large-halo-getter-matched-tubes-made-in-usa-49-copia","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}