{"product_id":"5881wxt-sovtek","title":"5881WXT Sovtek","description":"\u003cdiv class=\"n6owBd awi2gc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACAkQAA\"\u003e\n\u003cspan data-subtree=\"aimfl,mfl\"\u003eThe \u003c\/span\u003e\u003cspan data-sfc-cp=\"\" data-sfc-root=\"c\" data-wiz-uids=\"n19Cm_v\" data-sfc-inited=\"2\"\u003e\u003cspan class=\"R78TQ\"\u003e\u003cspan data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-inited=\"2\"\u003e\u003ca class=\"gQWhZ\" rel=\"noopener\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwi1gbHqsNqXAxUOX0EAHUNqFfQQy_kOegoIAggACAAICRAD\" data-hveid=\"CAIIAAgACAkQAw\" href=\"https:\/\/www.thetubestore.com\/sovtek-5881wxt\" target=\"_blank\"\u003eSovtek 5881WXT Power Vacuum Tube\u003c!--TgQPHd|||[]--\u003e\u003c\/a\u003e\u003c!--TgQPHd|||[[[null,null,null,null,null,null,[[1793110414475445,4284174,4095044163],null,null,null,null,[[2,0,0,10]]],\u0026quot;https:\/\/www.thetubestore.com\/sovtek-5881wxt\u0026quot;],0,0],\u0026quot;\\u0026n19Cm_u:u9afN\u0026quot;,\u0026quot;\\u0026n19Cm_u:kEV45c\u0026quot;]--\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[[\u0026quot;https:\/\/www.thetubestore.com\/sovtek-5881wxt\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;Sovtek 5881WXT Vacuum Power Tubes - www.thetubestore.com\u0026quot;,\u0026quot;Product: Sovtek 5881WXT Power Vacuum Tube (Price: $39.95 per tube, free matching in any quantity). Specifications: Military-standard beam tetrode, tolerates higher voltages than most 6L6 tubes, warm round tone. Relabeled by Fender\/Groove Tubes (GT-6L6B) and Mesa Boogie (STR425). Performance: Reliable general-purpose workhorse suited for rack equipment, crunch, and overdrive; less optimal for direct guitar-to-amp setups or rich harmonic content. Warranty: 3 months from purchase date covering manufacturer defects via regular mail return; non-warranty returns incur a 15% restocking fee.\u0026quot;,\u0026quot;https:\/\/encrypted-tbn2.gstatic.com\/images?q\\u003dtbn:ANd9GcRxwTgPtH2insyI4CaXi7AqML5LM7X0Y4RChQ1YGvbCc_bY6ivn1xS64CFflFrz-GDT6cVL54mtk_XkIVw\u0026quot;,\u0026quot;The Tube Store\u0026quot;,\u0026quot;https:\/\/encrypted-tbn2.gstatic.com\/faviconV2?url\\u003dhttps:\/\/www.thetubestore.com\\u0026client\\u003dAIM\\u0026size\\u003d128\\u0026type\\u003dFAVICON\\u0026fallback_opts\\u003dTYPE,SIZE,URL\u0026quot;,[[1793110414475445,4284174,4095044163],null,null,null,null,[[2,0,0,10]]],null,\u0026quot;2f69d3bb-76dc-42a2-b2a0-502b434701df\u0026quot;]]--\u003e\u003c\/span\u003e is a \u003cmark class=\"b6AQX\" data-wiz-attrbind=\"class=n19Cm_y\/cFwyDc\" data-sfc-root=\"c\" data-ved=\"2ahUKEwi1gbHqsNqXAxUOX0EAHUNqFfQQuJAPegoIAggACAAICRAE\"\u003erugged, military-standard beam tetrode often used as a direct replacement or stock power tube in 6L6 and 5881 guitar amplifiers\u003c!--TgQPHd|||[[[null,null,null,null,null,null,null,null,null,null,null,null,[247864,null,0]]]]--\u003e\u003c\/mark\u003e.\u003cspan\u003e [\u003ca href=\"https:\/\/www.thetubestore.com\/sovtek-5881wxt\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/shop.ehx.com\/item\/5881wxt\/\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.watfordvalves.com\/product_detail.asp?id=65\"\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=n19Cm_18\/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=\"2ahUKEwi1gbHqsNqXAxUOX0EAHUNqFfQQi4wTegoIAggACAAIFhAB\" data-hveid=\"CAIIAAgACBYQAQ\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eType:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Power beam tetrode (historically derived from the Russian 6P3S-E \/ 6Π3C-E military-grade tube).\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.jayskyler.com\/guitar-gear-guide\/sovtek-5881-wxt-6l6-wgc-tube-guide.html\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.scribd.com\/document\/114373154\/Sovtek-5881-WXT\"\u003e2\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=\"2ahUKEwi1gbHqsNqXAxUOX0EAHUNqFfQQi4wTegoIAggACAAIFhAH\" data-hveid=\"CAIIAAgACBYQBw\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eBase:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Full-size octal 8-pin base designed for easy installation in vintage and modern amplifier sockets (distinguishing it from the small-disc base of the standard 5881\/6L6WGC).\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.amazon.com\/Sovtek-5881WXT-6L6WGC-Vacuum-Matched\/dp\/B003IE8GQK\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.scribd.com\/document\/114373154\/Sovtek-5881-WXT\"\u003e2\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=\"2ahUKEwi1gbHqsNqXAxUOX0EAHUNqFfQQi4wTegoIAggACAAIFhAN\" data-hveid=\"CAIIAAgACBYQDQ\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eDurability:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Built to rigid military specifications, offering high resistance to microphonics and a strong tolerance for higher plate and screen voltages than many traditional 6L6 types.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/shop.ehx.com\/item\/5881wxt\/\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.thetubestore.com\/sovtek-5881wxt\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.watfordvalves.com\/product_detail.asp?id=65\"\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=\"2ahUKEwi1gbHqsNqXAxUOX0EAHUNqFfQQi4wTegoIAggACAAIFhAT\" data-hveid=\"CAIIAAgACBYQEw\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eCommon Rebranding:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Frequently relabeled and used as original equipment by major manufacturers—including Fender (as Groove Tubes GT-6L6B or Fender-branded tubes) and Mesa Boogie (STR425).\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.watfordvalves.com\/product_detail.asp?id=65\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.thetubestore.com\/sovtek-5881wxt\"\u003e2\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=\"2ahUKEwi1gbHqsNqXAxUOX0EAHUNqFfQQi4wTegoIAggACAAIFhAZ\" data-hveid=\"CAIIAAgACBYQGQ\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eSound Profile:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Delivers a warm, round, and balanced tone with a clean, well-defined low end. It is known as a reliable workhorse for high-gain crunch, overdrive, and setups utilizing outboard rack effects, though it is generally considered less harmonically rich for pure, direct plug-in clean or jazz styles.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/blog.thetubestore.com\/review-sovtek-5881wxt-tube\/\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.tubedepot.com\/products\/sovtek-5881wxt-power-vacuum-tube\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.amazon.com\/Sovtek-5881WXT-6L6WGC-Vacuum-Matched\/dp\/B003IE8GQK\"\u003e3\u003c\/a\u003e, \u003ca href=\"https:\/\/www.watfordvalves.com\/product_detail.asp?id=65\"\u003e4\u003c\/a\u003e, \u003ca href=\"https:\/\/www.thetubestore.com\/sovtek-5881wxt\"\u003e5\u003c\/a\u003e]\u003c\/span\u003e\n\u003c\/div\u003e","brand":"Sovtek","offers":[{"title":"Default Title","offer_id":67889412931663,"sku":null,"price":740.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/4354\/9519\/files\/images_57da67f8-bba6-4a94-92d5-965e58a081c3.jpg?v=1793110486","url":"https:\/\/theoldstockroom.com\/products\/5881wxt-sovtek","provider":"The Old Stockroom","version":"1.0","type":"link"}