{"product_id":"5965-e180cc-nos-nib-sylvania-triple-mica-gold-pin-tested-pair-balanced-sections-made-in-usa","title":"5965 \/ E180CC NOS NIB SYLVANIA Triple Mica Gold Pin Tested Pair Balanced Sections Made in USA","description":"\u003ch3\u003e\u003cstrong\u003e5965 \/ E180CC NOS NIB SYLVANIA Triple Mica Gold Pin Made in USA\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAMPLITREX Tested \u003cmeta charset=\"utf-8\"\u003e– Balanced Sections – Low Noise \u0026amp; Microphonics – Vintage \u003cmeta charset=\"utf-8\"\u003eSylvania Gold Pin Production\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube Tester\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVa = 150V, Vg = -1.2V\u003cstrong\u003e\u003cbr\u003eAverage 100%:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eGm = 7.00 ; Ia = 10.0 mA\u003cstrong\u003e\u003cbr\u003eTEST RESULT:\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003eVERY\u003cstrong\u003e \u003c\/strong\u003eSTRONG\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1\u003c\/strong\u003e: Gm = 8.57 ; Ia = 12.8 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2\u003c\/strong\u003e: Gm = 9.14 ; Ia = 13.9 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1\u003c\/strong\u003e: Gm = 10.57 ; Ia = 16.8 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2\u003c\/strong\u003e: Gm = 10.45 ; Ia = 16.6 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional tests performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBurn-in \/ Stability Test:\u003c\/strong\u003e 48h – OK\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and compliant for use in hi-fi equipment and guitar amplifiers, even in the most sensitive audio stages.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Very good. The sections are consistent and well-aligned, making the tube suitable even 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\u003eShort Circuits and GAS:\u003c\/strong\u003e None.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eAn interesting \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNOS \/ NIB pair of 5965 – E180CC Sylvania\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, authentic US production characterized by the prized \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eTriple Mica with Gold Pins\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e construction. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6230\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e code identifies Sylvania manufacturing from 1962, precisely in the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e30th week of the year\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, traceable to the historic Emporium, Pennsylvania plant.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBoth tubes show performance clearly superior to the nominal reference of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e7.00 mA\/V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Tube 1 reaches an average transconductance of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e8.86 mA\/V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with an average anode current of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e13.35 mA\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e; Tube 2 measures \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e10.51 mA\/V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e16.70 mA\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e respectively. These are therefore two examples with particularly vigorous emission, although they belong to two different electrical levels and are not intended for applications requiring a strict match between the two tubes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe strong point of the pair is the excellent \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003einternal balance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Tube 1 measures \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e8.57 and 9.14 mA\/V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, while Tube 2 reaches \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e10.57 and 10.45 mA\/V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with anode currents that are equally consistent between their respective sections. This feature makes them particularly interesting for circuits that utilize both sections of the single tube and require good operational symmetry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eTriple Mica\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e construction contributes to the mechanical stability of the internal structure, while the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003egold pins\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ensure high-quality contacts and good resistance to oxidation. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e48-hour\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e burn-in confirmed the stability of the parameters, with low microphonics, and no fluctuations, gas, or short circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThey are suitable for preamplifiers, buffers, drivers, professional equipment, and measuring instruments designed for 5965 or E180CC, even in the most sensitive audio stages. Since the 5965\/E180CC has specific electrical characteristics, it must be used exclusively in circuits compatible with or expressly designed for this type of tube.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn terms of sound, American Sylvania production is appreciated for an \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eopen, dynamic, and natural\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e presentation, with a well-articulated midrange, fast and controlled low frequencies, and defined highs without excessive aggression. The excellent internal balance of the sections promotes precision, stability, and orderly reproduction even in the most demanding circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA proposal of notable interest for those seeking two \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1962 Sylvania 5965\/E180CC NOS\/NIB\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with Triple Mica, Gold Pins, low microphonics, and emission far exceeding the reference: two authentic examples, carefully tested and characterized by particularly well-balanced internal sections.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e NOS - NIB - New Old Stock, New In Box - Tested and functional - Supplied in original box.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAesthetic conditions:\u003c\/strong\u003e\u003cspan\u003e one example in very good aesthetic condition – markings clearly legible with slight signs of age; the other with markings completely worn away. See photos for details.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e Sylvania Electric Products Inc. manufacture, Emporium, Pa. - \u003cmeta charset=\"utf-8\"\u003e6230 → 62 → 1962 - 30 → 30th week of the year\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 longevity\" 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":59351050420572,"sku":"03865L","price":810.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_dea92974-b8eb-454c-b347-687563e1ede3.jpg?v=1791124826","url":"https:\/\/vacuumtubestreasures.com\/en-hk\/products\/5965-e180cc-nos-nib-sylvania-triple-mica-gold-pin-tested-pair-balanced-sections-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}