{"product_id":"ef86-6267-international-nos-by-philips-heerlen-plant-short-mesh-plate-halo-getter-made-in-holland-1967","title":"EF86 6267 NOS International by Philips – Short Mesh Plate Halo Getter Tube Holland 1967","description":"\u003cp\u003e\u003cstrong\u003eEF86 ( 6267 ) International NOS by PHILIPS, Heerlen Plant, Short Mesh Plate, Halo Getter, Made in Holland, 1967\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e \u003cstrong\u003eDescription:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"316\" data-end=\"756\" class=\"\"\u003e The \u003cstrong data-start=\"319\" data-end=\"352\"\u003eEF86 International by Philips\u003c\/strong\u003e , produced in \u003cstrong data-start=\"367\" data-end=\"414\"\u003e1967 at the Heerlen factory in the Netherlands\u003c\/strong\u003e , is a NOS version built to Philips construction standards and branded for the International brand. It is a low-noise tube with \u003cstrong data-start=\"571\" data-end=\"614\"\u003eshort mesh plates\u003c\/strong\u003e and \u003cstrong data-start=\"617\" data-end=\"651\"\u003ehalo getters\u003c\/strong\u003e , appreciated for its balanced output, low background noise and a transparent and defined timbre.\u003c\/p\u003e\n\u003cp data-start=\"758\" data-end=\"947\" class=\"\"\u003e \u003cstrong\u003eBass: Dry but well-present\u003c\/strong\u003e , with good articulation and precision. There's no excess or bloat, but rather a solid control that enhances the clarity of the reproduction.\u003c\/p\u003e\n\u003cp data-start=\"949\" data-end=\"1163\" class=\"\"\u003e \u003cstrong\u003eMids: Clear, focused, and natural\u003c\/strong\u003e , with a very transparent output. Voices and acoustic instruments are well-defined, with a neutral tone that allows the recording's original character to emerge.\u003c\/p\u003e\n\u003cp data-start=\"1165\" data-end=\"1346\" class=\"\"\u003e \u003cstrong\u003eHighs: Extended and delicate\u003c\/strong\u003e , with a good sense of airiness and lack of grain. Balance in the high range is maintained even on analytical systems, without ever being fatiguing.\u003c\/p\u003e\n\u003cp data-start=\"1348\" data-end=\"1504\" class=\"\"\u003e \u003cstrong\u003eDynamics: Prompt and natural response\u003c\/strong\u003e , with smooth handling of microtransients. Dynamic progression is consistent, realistic, and always under control.\u003c\/p\u003e\n\u003cp data-start=\"1506\" data-end=\"1683\" class=\"\"\u003e \u003cstrong\u003eSoundstage: Well-built and stable\u003c\/strong\u003e , with a deep soundstage and precise imaging. Instrument separation is clean and allows for focused and engaging listening.\u003c\/p\u003e\n\u003cp data-start=\"1685\" data-end=\"2010\" class=\"\"\u003e The \u003cstrong data-start=\"1688\" data-end=\"1730\"\u003ePhilips Heerlen EF86 for International\u003c\/strong\u003e represents an excellent choice for those looking for a \u003cstrong data-start=\"1795\" data-end=\"1834\"\u003ebalanced, quiet and reliable\u003c\/strong\u003e NOS tube, ideal for \u003cstrong data-start=\"1847\" data-end=\"1891\"\u003ephono preamps, line stages, microphone stages\u003c\/strong\u003e , but also for \u003cstrong data-start=\"1906\" data-end=\"1951\"\u003eguitar heads such as the Vox AC15 or AC30\u003c\/strong\u003e , where a detailed, neutral and musical output is desired.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e \u003cstrong\u003eTest Results:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003e Valve tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Conditions:\u003c\/strong\u003e \u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eVa = 250V, Vg2 = 150V, 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 = 1800 ; Ia = 3.0 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e \u003cstrong\u003eValve:\u003c\/strong\u003e Gm = 3000; Ia = 6.0 mA\u003c\/p\u003e\n\u003cdiv\u003e \u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Standard. Tested and approved for use in hi-fi and guitar amplifiers.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – ​​Very strong and stable output, no fluctuations.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e \u003cstrong\u003eConditions:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - New Old Stock - Tested and working - Supplied in our custom box for optimal protection.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e Excellent – ​​Perfectly preserved lettering, minimal signs of aging. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e 8Y9\u003cmeta charset=\"utf-8\"\u003e Δ7H2 →\u003cmeta charset=\"utf-8\"\u003e 8Yx indicates an EF86 with the sequential progression of x, where the increment of x indicates the production changes-\u003cmeta charset=\"utf-8\"\u003e Δ7H2 Δ → Heerlen (Holland), 7 (four digits) → 1967 - H → August - 2 → 2nd week of the month\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Why our tubes are different – ​​the VTT protocol that improves sound, reliability and durability\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"INTERNATIONAL","offers":[{"title":"Default Title","offer_id":54223022129500,"sku":"02854","price":6800.0,"currency_code":"ALL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_d577f4f9-52d2-4aae-af63-3906f24de4b4.jpg?v=1743085512","url":"https:\/\/vacuumtubestreasures.com\/en-al\/products\/ef86-6267-international-nos-by-philips-heerlen-plant-short-mesh-plate-halo-getter-made-in-holland-1967","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}