{"product_id":"electro-harmonix-ef86-tube","title":"Electro Harmonix EF86 tube","description":"\u003cp\u003e\u003cstrong\u003eElectro-Harmonix EF86 is a pentode preamp tube for amplifiers and audio equipment designed for the EF86 type.\u003c\/strong\u003e It is associated with early VOX circuits and is also used in other guitar preamps that employ a pentode input stage.\u003c\/p\u003e\u003cp\u003eThis is a small-signal tube for preamplification, distinct from the output tubes that drive a speaker. EF86 has a nine-pin Noval base and a 6.3 V heater. It is sold as one tube for replacement in a compatible circuit or a project specifically designed for this type.\u003c\/p\u003e\u003cp\u003eTwo tubes having nine pins does not make them electrically interchangeable. Check the amplifier's specified tube type before replacement; EF86 should not replace a 12AX7 simply because the socket looks similar. It is an appropriate choice when your instrument preamp specifically requires an Electro-Harmonix EF86.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eType: EF86 \/ EF86EH\u003c\/li\u003e\u003cli\u003eSmall-signal pentode preamp tube\u003c\/li\u003e\u003cli\u003eBase: Noval, 9 pins\u003c\/li\u003e\u003cli\u003eHeater voltage: 6.3 V\u003c\/li\u003e\u003cli\u003eSharp-cutoff pentode\u003c\/li\u003e\u003cli\u003eQuantity: one tube\u003c\/li\u003e\u003cli\u003eFor equipment specified for EF86\u003c\/li\u003e\u003c\/ul\u003e","brand":"Electro-Harmonix","offers":[{"title":"Default Title","offer_id":51636552335690,"sku":"15135","price":546.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/9910\/7402\/files\/electro-harmonix-forstarkarror-electro-harmonix-ef86-tube-1263889974.jpg?v=1793603611","url":"https:\/\/tgt11.com\/en\/products\/electro-harmonix-ef86-tube","provider":"These Go To 11","version":"1.0","type":"link"}