{"product_id":"mullard-ef86-nos-vacuum-tube","title":"Mullard EF86 NOS Vacuum Tube","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eIntroduced by British manufacturer Mullard in 1953, the EF86 is a low-noise audio pentode developed for the input stages of high-gain amplifiers, microphone preamplifiers, and tape recorders. Its design addressed hum, noise, and microphonics--key concerns when amplifying low-level audio signals. The EF86 uses a nine-pin B9A base and a 6.3-volt, 0.2-amp heater, with pentode construction intended for resistance-capacitance-coupled voltage amplification.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eArchive Assessed, Apos Assured\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAll Archive tubes are thoroughly tested, inspected, photographed, and inventoried, guaranteeing the quality of each tube that's shipped to customers. All tubes carry an Apos 12-month warranty against manufacturing defects.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAre the tubes...dusty...?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBecause these are genuine New Old Stock tubes, small cosmetic irregularities may be present. These aren't defects but artifacts of vintage manufacturing and decades of storage. They have no impact on reliability or sonic performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \/ Type:\u003c\/strong\u003e Mullard EF86\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCage Type:\u003c\/strong\u003e Silver Cage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGetter Type: \u003c\/strong\u003eRing Getter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in: \u003c\/strong\u003eEngland\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox Type:\u003c\/strong\u003e NOS in New Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested on:\u003c\/strong\u003e Amplitrex AT1000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Archive Tubes","offers":[{"title":"Matched Pair (2 Tubes) \/ Archive Vault","offer_id":67983767765228,"sku":"APS-1789-1","price":358.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 Tubes) \/ Gold","offer_id":67983767797996,"sku":"APS-1789-2","price":326.0,"currency_code":"USD","in_stock":true},{"title":"Matched Pair (2 Tubes) \/ Silver","offer_id":67983767830764,"sku":"APS-1789-3","price":305.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 Tubes) \/ Archive Vault","offer_id":67983767863532,"sku":"APS-1789-4","price":716.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 Tubes) \/ Gold","offer_id":67983767896300,"sku":"APS-1789-5","price":652.0,"currency_code":"USD","in_stock":true},{"title":"Matched Quad (4 Tubes) \/ Silver","offer_id":67983767929068,"sku":"APS-1789-6","price":610.0,"currency_code":"USD","in_stock":true},{"title":"Singles  (1 Tube) \/ Archive Vault","offer_id":67983767961836,"sku":"APS-1789-7","price":169.0,"currency_code":"USD","in_stock":true},{"title":"Singles  (1 Tube) \/ Gold","offer_id":67983767994604,"sku":"APS-1789-8","price":153.0,"currency_code":"USD","in_stock":true},{"title":"Singles  (1 Tube) \/ Silver","offer_id":67983768027372,"sku":"APS-1789-9","price":142.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/ID2A9853.jpg?v=1793207464","url":"https:\/\/apos.audio\/products\/mullard-ef86-nos-vacuum-tube","provider":"Apos","version":"1.0","type":"link"}