{"product_id":"6550-electro-harmonix","title":"6550 Electro-Harmonix","description":"\u003cdiv class=\"n6owBd awi2gc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACAwQAA\"\u003e\n\u003cspan data-subtree=\"aimfl,mfl\"\u003eThe \u003c\/span\u003e\u003cspan data-sfc-cp=\"\" data-sfc-root=\"c\" data-wiz-uids=\"glwmyd_r\"\u003e\u003cspan class=\"\"\u003e\u003ca class=\"H23r4e\" rel=\"noopener\" data-ved=\"2ahUKEwioxayT3dWXAxWKU0EAHSa6ClsQy_kOegoIAggACAAIDBAB\" data-hveid=\"CAIIAAgACAwQAQ\" href=\"https:\/\/shop.ehx.com\/item\/6550eh\/\" target=\"_blank\"\u003eElectro-Harmonix 6550EH\u003c\/a\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[[\u0026quot;https:\/\/shop.ehx.com\/item\/6550eh\/\u0026quot;,null,null,[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,[{\u0026quot;1218\u0026quot;:[16,null,null,null,[1]]}]],16,null,\u0026quot;Electro\u0026quot;,\u0026quot;Electro-Harmonix 6550 Superior high-power Octal Beam Tetrode, suitable for any amp using 6550 or KT88. Designed to hold up in even the most punishing environment of high powered bass amps, such as Ampeg SVT. • Thanks to extra headroom, bass players can realize the full dynamic and tonal range of the instrument • Nickel steel side rod mica supports sweet tone regardless of setup, even in combos where the tube is only inches from the speaker See matched version: https:\/\/shop.ehx.com\/item\/6550EHPL Tube Specs: http:\/\/shop.ehx.com\/catalog\/tubes-specs\/KT88EH.pdf Power Tube Country of Origin: RUSSIA Related Items Previous\u0026quot;,\u0026quot;https:\/\/encrypted-tbn2.gstatic.com\/images?q\\u003dtbn:ANd9GcS3cLm7zdgdGerzeWyyUTTwev8mHtW2PsugFwUciFfsYRPIGhsXPruhQkeOMil-JlHN3piMLfNr4wsvHbc\u0026quot;,\u0026quot;Electro-Harmonix\u0026quot;,\u0026quot;https:\/\/encrypted-tbn0.gstatic.com\/faviconV2?url\\u003dhttps:\/\/shop.ehx.com\\u0026client\\u003dAIM\\u0026size\\u003d128\\u0026type\\u003dFAVICON\\u0026fallback_opts\\u003dTYPE,SIZE,URL\u0026quot;,[[1792950512853672,4281226,1527429670],null,null,null,null,[[2,0,0,10]]],null,\u0026quot;8841e6be-8e41-456f-ac9a-ed59dac3e4fc\u0026quot;]]--\u003e\u003c\/span\u003e is a \u003cmark class=\"b6AQX\" data-wiz-attrbind=\"class=glwmyd_s\/cFwyDc\" data-sfc-root=\"c\" data-ved=\"2ahUKEwioxayT3dWXAxWKU0EAHSa6ClsQuJAPegoIAggACAAIDBAC\"\u003ehigh-power octal beam tetrode vacuum tube\u003c!--TgQPHd|||[[[null,null,null,null,null,null,null,null,null,null,null,null,[247864,null,0]]]]--\u003e\u003c\/mark\u003e manufactured in Russia (by the New Sensor factory) and rated for up to 42 watts of plate dissipation.\u003cspan\u003e [\u003ca href=\"https:\/\/shop.ehx.com\/item\/6550eh\/\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.amazon.com\/Electro-Harmonix-6550-Vacuum-Tube-Matched-Pair\/dp\/B004L7EWXO\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/audiokarma.org\/forums\/threads\/yet-another-6550-kt88-question-debate-session.622571\/\"\u003e3\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"yhAwj\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-inited=\"2\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"ZLzG0d ncoeY E8xBUb\" role=\"heading\" aria-level=\"3\" data-animation-nesting=\"\" data-sfc-cp=\"\" data-wiz-attrbind=\"aria-level=glwmyd_12\/fLk2Md\" data-sfc-root=\"c\"\u003eKey Features \u0026amp; Specifications\u003c!--TgQPHd|||[[2,[null,null,null,null,null,null,null,null,null,null,null,null,[351768,null,0]],[],null,1]]--\u003e\n\u003c\/div\u003e\n\u003cdiv data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwioxayT3dWXAxWKU0EAHSa6ClsQi4wTegoIAggACAAIFBAB\" data-hveid=\"CAIIAAgACBQQAQ\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eApplications:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Suitable for any amplifier designed for 6550 or KT88 tubes, including high-power bass amplifiers (like the Ampeg SVT) and audiophile home-audio\/hi-fi amplifiers.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.thetubestore.com\/electro-harmonix-6550\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.amazon.com\/Electro-Harmonix-6550-Vacuum-Tube-Matched-Pair\/dp\/B004L7EWXO\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/shop.ehx.com\/item\/6550eh\/\"\u003e3\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwioxayT3dWXAxWKU0EAHSa6ClsQi4wTegoIAggACAAIFBAH\" data-hveid=\"CAIIAAgACBQQBw\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eConstruction:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Features a four-pillar construction, nickel-steel side-rod mica supports, and mica spacers for mechanical stability, alongside a leaded-glass compound to preserve vacuum integrity and heat dissipation.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.banzaimusic.com\/6550-EH-Platinum-Matched.html\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/shop.ehx.com\/item\/6550eh\/\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.thetubestore.com\/electro-harmonix-6550\"\u003e3\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwioxayT3dWXAxWKU0EAHSa6ClsQi4wTegoIAggACAAIFBAN\" data-hveid=\"CAIIAAgACBQQDQ\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eTone \u0026amp; Performance:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Offers clean headroom, good linearity, and a balanced, sweet tone even in tight combo amp setups where the tube sits close to the speaker. Users on \u003cspan data-sfc-cp=\"\" data-sfc-root=\"c\" data-wiz-uids=\"glwmyd_1r\" data-sfc-inited=\"2\"\u003e\u003cspan class=\"\"\u003e\u003ca class=\"H23r4e\" rel=\"noopener\" data-ved=\"2ahUKEwioxayT3dWXAxWKU0EAHSa6ClsQy_kOegoIAggACAAIFBAP\" data-hveid=\"CAIIAAgACBQQDw\" href=\"https:\/\/www.talkbass.com\/threads\/electro-harmonix-tubes-ehx-6550eh-quality-stuff.1112460\/\" target=\"_blank\"\u003eTalkBass\u003c\/a\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[[\u0026quot;https:\/\/www.talkbass.com\/threads\/electro-harmonix-tubes-ehx-6550eh-quality-stuff.1112460\/\u0026quot;,null,null,[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,[{\u0026quot;1218\u0026quot;:[16,null,null,null,[1]]}]],16,null,\u0026quot;Electro-Harmonix Tubes EHX 6550EH.. Quality stuff?\u0026quot;,\u0026quot;EHX 6550EH Tubes: Electro-Harmonix 6550EH tubes are considered a reliable and tonally pleasing budget option, with users reporting good performance and longevity, though isolated failures after years of regular use can occur.\u0026quot;,null,\u0026quot;TalkBass.com\u0026quot;,\u0026quot;https:\/\/encrypted-tbn0.gstatic.com\/faviconV2?url\\u003dhttps:\/\/www.talkbass.com\\u0026client\\u003dAIM\\u0026size\\u003d128\\u0026type\\u003dFAVICON\\u0026fallback_opts\\u003dTYPE,SIZE,URL\u0026quot;,[[1792950512853672,4281226,1527429670],null,null,null,null,[[2,0,0,21]]],null,\u0026quot;7c5833d7-9de8-4dc4-868a-34a3a9f3598d\u0026quot;]]--\u003e\u003c\/span\u003e generally consider the EHX 6550EH a reliable and tonally pleasing budget-to-midrange choice.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.talkbass.com\/threads\/electro-harmonix-tubes-ehx-6550eh-quality-stuff.1112460\/\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/shop.ehx.com\/item\/6550eh\/\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.thetubestore.com\/electro-harmonix-6550\"\u003e3\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwioxayT3dWXAxWKU0EAHSa6ClsQi4wTegoIAggACAAIFBAU\" data-hveid=\"CAIIAAgACBQQFA\"\u003e\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eMatching Options:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Frequently available individually or factory-matched in pairs, quads, or larger sets\u003c\/span\u003e\u003c\/div\u003e","brand":"Electro-Harmonix","offers":[{"title":"Default Title","offer_id":67865449300047,"sku":null,"price":1100.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/4354\/9519\/files\/images_74df2f38-569b-49cd-b24c-8a0d876482f0.jpg?v=1792951031","url":"https:\/\/theoldstockroom.com\/products\/6550-electro-harmonix","provider":"The Old Stockroom","version":"1.0","type":"link"}