{"product_id":"jan-6922-nos-amperex-usa-gold-pin-large-halo-getter-made-in-usa-late-1960s-production-hicksville-era-copia","title":"USN 6922 AMPEREX USA Gold Pin D Getter – Hicksville NY 1960 – Military Grade – Amplitrex Tested","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eUSN 6922 AMPEREX USA Gold Pin D Getter – Hicksville NY 1960 – Military Grade – Amplitrex Tested\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\u003eUSN 6922 AMPEREX\u003c\/b\u003e\u003c\/span\u003e , produced at the Hicksville (New York) plant in 1960 (glass code \u003cstrong\u003e7L4\u003c\/strong\u003e ✱ \u003cstrong\u003e0C\u003c\/strong\u003e ), is a military version intended for the US Navy, built to more stringent specifications than civilian production.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis is a genuine \u003cspan class=\"s1\"\u003e\u003cb\u003eAmperex Electronic Corp. USA\u003c\/b\u003e\u003c\/span\u003e production, with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eGold Pins\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eGetter a D\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eTypical 1960s Hicksville interior construction\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eOriginal USN markings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eValve selected, individually tested and also verified for microphony.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSound Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe US military 6922s have a different sound signature than the European Philips\/Heerlen productions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBass:\u003c\/strong\u003e Compact, controlled, with excellent articulation and a sense of stability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMids:\u003c\/strong\u003e Clean, slightly more neutral than Dutch counterparts, with good vocal intelligibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHighs:\u003c\/strong\u003e Defined but not aggressive, with an orderly brilliance typical of the American school.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDynamics:\u003c\/strong\u003e Fast, with good ability to follow micro-variations in the signal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoundstage:\u003c\/strong\u003e Precise and well-centered, with stable imaging.\u003c\/p\u003e\n\u003cp\u003eIt is a balanced, reliable valve, suitable for those looking for solidity rather than marked romanticism.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eMM\/MC phono stages\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eTube DACs\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eHeadphone amplifiers with single 6922\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eLine preamplifiers\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eGuitar amplifiers (also V1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eIts low microphony makes it suitable even for sensitive circuits.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e🎯 Note for audiophiles and technicians\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis is not a rebranded European production, but a genuine \u003cspan class=\"s1\"\u003e\u003cb\u003eAmperex USA military Hicksville\u003c\/b\u003e\u003c\/span\u003e .\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIt is a valve for those who are looking for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eRobust construction\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eStability over time\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eMilitary specifications\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eReal test declared\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eIt is not proposed as a museum collection item, but as a selected component ready for use in high-end systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVa = 90V ; Vg = -1.2V \u003cstrong\u003e\u003cbr\u003eAverage 100%:\u003c\/strong\u003e Gm = 12.5 ; Ia = 15.0 mA \u003cstrong\u003e\u003cbr\u003eTEST RESULT:\u003c\/strong\u003e VERY STRONG\u003c\/p\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 = 10.92; Ia = 11.6 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2\u003c\/strong\u003e : Gm = 10.70; Ia = 11.2 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\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and approved for use in hi-fi, phono stages, and guitar amplifiers, including V1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e The sections are coherent and well aligned, making the valve also 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\u003eOutput Quality:\u003c\/strong\u003e Excellent – Very strong and stable output, no fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShort circuits 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\u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage tubes - Tested and in perfect working order. Shipped in our custom box for optimal protection.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e \u003cspan\u003eVery good – Clearly legible writing with minor signs of wear, no obvious defects. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e 7L4 ✱0C → 7Lx indicates a 6922 with the sequential progression of x, where the increment of x indicates production changes. ✱0C ✱ → AMPEREX ELECTRONIC CORP. New York, 0 (out of three digits) → 1960 - C → March\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\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e","brand":"AMPEREX","offers":[{"title":"Default Title","offer_id":56779586797916,"sku":"03433","price":4417.0,"currency_code":"CZK","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_d755dece-ab7b-4a34-b935-764a7b6c457b.jpg?v=1771605766","url":"https:\/\/vacuumtubestreasures.com\/en-cz\/products\/jan-6922-nos-amperex-usa-gold-pin-large-halo-getter-made-in-usa-late-1960s-production-hicksville-era-copia","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}