{"product_id":"12ax7-ecc83-baldwin-by-sylvania-long-gray-plates-halo-getter-tested-tube-usa","title":"12AX7 ECC83 Baldwin by Sylvania Long Gray Plates Halo Getter Tested Tube USA","description":"\u003cp\u003e\u003cstrong\u003e12AX7 ( ECC83 ) Baldwin by SYLVANIA Long Gray plates Halo Getter Tested Tube Made in USA\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e \u003cstrong\u003eDescription:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp data-start=\"575\" data-end=\"856\"\u003e This \u003cstrong data-start=\"582\" data-end=\"619\"\u003e12AX7 (ECC83) Baldwin by Sylvania\u003c\/strong\u003e , made in the USA and originally selected for use in Baldwin organs, is a vintage American tube featuring \u003cstrong data-start=\"764\" data-end=\"784\"\u003eLong Gray Plates\u003c\/strong\u003e and \u003cstrong data-start=\"787\" data-end=\"802\"\u003eHalo Getter\u003c\/strong\u003e , a construction typical of vintage Sylvania ECC83s.\u003c\/p\u003e\n\n\u003cp data-start=\"858\" data-end=\"1025\"\u003e It is a valve that focuses on \u003cstrong data-start=\"886\" data-end=\"906\"\u003esonic character\u003c\/strong\u003e , natural musical response and that feeling of “life” that many modern productions struggle to convey.\u003c\/p\u003e\n\n\u003ch3 data-end=\"984\" data-start=\"957\"\u003e \u003cstrong\u003eSound Features:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n \u003cp data-start=\"1055\" data-end=\"1070\"\u003e\u003cstrong\u003eLow range:\u003c\/strong\u003e Full and smooth, with a rounded response that gives body and depth to the sound. The bass isn't overly controlled, but natural and musical, contributing to a sense of solidity and presence.\u003c\/p\u003e\n\n\u003cp data-start=\"1261\" data-end=\"1276\"\u003e \u003cstrong\u003eMidrange:\u003c\/strong\u003e The real strong point: warm, dense and rich in harmonics, with a pleasant emphasis on the mid-lows that makes guitars and electric instruments more expressive, three-dimensional and present in the mix.\u003c\/p\u003e\n\n\u003cp data-start=\"1477\" data-end=\"1491\"\u003e \u003cstrong\u003eHighs:\u003c\/strong\u003e Sweet and smooth, without any aggressiveness. The highs are designed to be musical and never fatiguing, ideal for those seeking an authentic vintage sound.\u003c\/p\u003e\n\n\u003cp data-start=\"1648\" data-end=\"1671\"\u003e \u003cstrong\u003eDynamics and Response:\u003c\/strong\u003e Smooth dynamic response, with natural progressive compression as the tube is stressed. The sound grows organically, prioritizing feel and expressiveness over analytical rigidity.\u003c\/p\u003e\n\n\u003ch3\u003e\n\n\u003cmeta charset=\"utf-8\"\u003e 🎸 \u003cstrong\u003eUse in Musical Instrument Amplifiers\u003c\/strong\u003e\n\n\u003c\/h3\u003e\n\n\u003cp data-end=\"1973\" data-start=\"1944\"\u003e Particularly suitable for:\u003c\/p\u003e\n\n\u003cul\u003e\n\n \u003cli data-end=\"2006\" data-start=\"1976\"\u003e\u003cstrong data-end=\"2006\" data-start=\"1976\"\u003eguitar amplifiers\u003c\/strong\u003e\u003c\/li\u003e\n\n\u003cli data-end=\"2062\" data-start=\"2009\"\u003e \u003cstrong data-end=\"2025\" data-start=\"2019\"\u003eV1\u003c\/strong\u003e position in non-extremely critical contexts\u003c\/li\u003e\n\n\u003cli data-end=\"2108\" data-start=\"2065\"\u003e blues, jazz, vintage clean and soft crunch\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-end=\"2116\" data-start=\"2110\"\u003e Offers:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli data-end=\"2150\" data-start=\"2119\"\u003e natural harmonic saturation\u003c\/li\u003e\n\n\u003cli data-end=\"2185\" data-start=\"2153\"\u003e progressive and musical breakup\u003c\/li\u003e\n\n\u003cli data-end=\"2245\" data-start=\"2188\"\u003e less aggressive response than many modern ECC83s\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-end=\"2335\" data-start=\"2247\"\u003e A tube that \u003cstrong data-end=\"2283\" data-start=\"2263\"\u003einvites you to play\u003c\/strong\u003e , enhancing the musician's touch and dynamics. It's a tube designed for those seeking \u003cstrong data-end=\"3060\" data-start=\"3015\"\u003echaracter, musicality, and dynamic response\u003c\/strong\u003e , prioritizing sonic behavior and feel over laboratory-grade perfection.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e \u003cstrong\u003eTest Results:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp\u003e Valve tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Conditions:\u003c\/strong\u003e \u003cspan\u003eVa = 250V ; Vg = -2V\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eAverage 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1600 ; Ia = 1.2 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Result:\u003c\/strong\u003e GOOD\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003cstrong\u003eValve:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1400 ; Ia = 0.9 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1300 ; Ia = 0.7 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv\u003e \u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eMicrophonics:\u003c\/strong\u003e \u003cspan\u003eLow. Tested and approved for use in guitar amplifiers. Also suitable for V1.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eBalance:\u003c\/strong\u003e \u003cspan\u003eThe sections present a coherent overall balance, fully compatible with use in musical amplifiers, in all applications where absolute symmetry between the sections is not required.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eOutput Quality:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStrong – Stable output, no fluctuations.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAbsent.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e \u003cstrong\u003eConditions:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eCosmetic Condition:\u003c\/strong\u003e \u003cspan\u003eVintage Tubes - Tested and Working - In our custom box.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eFunctionality:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFully operational.  \u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003eIdeal for\u003c\/span\u003e preamplifiers, phase reversal stages and musical instrument amplifiers.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eCosmetic Condition:\u003c\/strong\u003e Very Good – Clearly legible writing with minor signs of wear, no obvious defects. See photos for details.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eManufacturing Code:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e312 126 - SYLVANIA 26th week of 1951\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":56519497351516,"sku":"03374","price":333.0,"currency_code":"SEK","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_8b3d054e-324f-4112-92ac-2c176b7ddc3b.jpg?v=1769005168","url":"https:\/\/vacuumtubestreasures.com\/en-se\/products\/12ax7-ecc83-baldwin-by-sylvania-long-gray-plates-halo-getter-tested-tube-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}