{"product_id":"electro-harmonix-300b-eh-no-boxespair","title":"Electro-Harmonix 300B (EH) no boxes(pair)","description":"\u003cdiv class=\"ZLzG0d ncoeY E8xBUb\" role=\"heading\" aria-level=\"3\" data-animation-nesting=\"\" data-sfc-cp=\"\" data-wiz-attrbind=\"aria-level=udQMPc_11\/fLk2Md\" data-sfc-root=\"c\" style=\"padding-left: 40px;\"\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=\"2ahUKEwjV3Nntq8iXAxXPVkEAHdp2NJgQi4wTegoIAggACAAIExAA\" data-hveid=\"CAIIAAgACBMQAA\"\u003e\n\u003cul class=\"XSq4R KI3fJ\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACBMQAQ\"\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACBMQAg\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eDesign \u0026amp; Compatibility:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Built to mirror the classic Western Electric 300B, featuring a large-shoulder ST glass envelope, an 8-course directly heated filament, and a \u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e40-watt plate dissipation\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e. Its static DC characteristics and plate curves match the original specifications, allowing drop-in compatibility with most vintage and modern 300B amplifiers.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.hotroxuk.com\/electro-harmonix-300b-eh.html\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.akkelisaudio.com\/audioror\/diverse-ror\/effektror\/electro-harmonix-300b-gold-grid-matchat-par.html\"\u003e2\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACBMQBw\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eStandard vs. Gold Grid Versions:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\n\u003cul class=\"XSq4R KI3fJ\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACBMQCA\"\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACBMQCQ\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cem class=\"zhvwWe\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eStandard EH 300B:\u003c!--TgQPHd|||[]--\u003e\u003c\/em\u003e Uses traditional construction and a white or ceramic base, prized as a rugged, great-sounding OEM workhorse.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACBMQCg\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cem class=\"zhvwWe\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eElectro-Harmonix 300B Gold Grid (Gold Pin):\u003c!--TgQPHd|||[]--\u003e\u003c\/em\u003e Upgrades the internal grid wire to gold-plating, which reduces grid current, improves bias stability, extends tube life, and adds gold pins to prevent oxidation.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.enjoythemusic.com\/magazine\/equipment\/1201\/300b\/\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.tubedepot.com\/products\/electro-harmonix-300b-eh-white-base-power-vacuum-tube\"\u003e2\u003c\/a\u003e, \u003ca href=\"https:\/\/www.watfordvalves.com\/product_detail.asp?id=4198\"\u003e3\u003c\/a\u003e, \u003ca href=\"https:\/\/www.vivatubes.com\/new-electro-harmonix-300b-gold-grid-pins-vacuum-tube\/\"\u003e4\u003c\/a\u003e, \u003ca href=\"https:\/\/upscaleaudio.com\/products\/electro-harmonix-300b\"\u003e5\u003c\/a\u003e, \u003ca href=\"https:\/\/www.akkelisaudio.com\/audioror\/diverse-ror\/effektror\/electro-harmonix-300b-gold-grid-matchat-par.html\"\u003e6\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-hveid=\"CAIIAAgACBMQDw\"\u003e\n\u003cspan class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eSonic Profile:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Known for a balanced, dynamic presentation with a strong, clean lower end and musical detail.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.watfordvalves.com\/product_detail.asp?id=4198\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.enjoythemusic.com\/magazine\/equipment\/1201\/300b\/\"\u003e2\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\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 data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwjV3Nntq8iXAxXPVkEAHdp2NJgQi4wTegoIAggACAAIFhAA\" data-hveid=\"CAIIAAgACBYQAA\"\u003e\n\u003chr class=\"s6NV4e\" data-sfc-root=\"c\" data-sfc-pl=\"|||[]\"\u003e\n\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 data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwjV3Nntq8iXAxXPVkEAHdp2NJgQi4wTegoIAggACAAIFxAA\" data-hveid=\"CAIIAAgACBcQAA\"\u003e\n\u003cdiv class=\"ZLzG0d ncoeY E8xBUb\" role=\"heading\" aria-level=\"3\" data-animation-nesting=\"\" data-sfc-cp=\"\" data-wiz-attrbind=\"aria-level=udQMPc_2f\/fLk2Md\" data-sfc-root=\"c\"\u003eComparison of Electro-Harmonix 300B Options\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\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 data-bfc=\"\" class=\"\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwjV3Nntq8iXAxXPVkEAHdp2NJgQi4wTegoIAggACAAIGBAA\" data-hveid=\"CAIIAAgACBgQAA\"\u003e\n\u003cdiv class=\"Fv6NCb\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-ved=\"2ahUKEwjV3Nntq8iXAxXPVkEAHdp2NJgQ-q4QegoIAggACAAIGBAB\" data-hveid=\"CAIIAAgACBgQAQ\" data-sfc-inited=\"2\"\u003e\n\u003ctable class=\"NRefec\" data-animation-nesting=\"\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eTube Variant\u003c!--TgQPHd|||[]--\u003e\n\u003c\/th\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eCore Features\u003c!--TgQPHd|||[]--\u003e\n\u003c\/th\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eBest Suited For\u003c!--TgQPHd|||[]--\u003e\n\u003c\/th\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\n\u003ctd class=\"Vk1lqb\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\n\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eElectro-Harmonix 300B (Standard)\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"Vk1lqb\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e40W plate dissipation, 8-course filament, standard nickel grid\/pins\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"Vk1lqb\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eBudget-conscious audiophiles and OEM amplifier replacements\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\n\u003ctd class=\"Vk1lqb\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003e\n\u003cstrong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eElectro-Harmonix 300B Gold Grid\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"Vk1lqb\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eGold-plated grid wire, gold pins, enhanced bias stability and longevity\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"Vk1lqb\" colspan=\"undefined\" data-sfc-cp=\"\" data-sfc-root=\"c\"\u003eUsers wanting improved thermal\/bias stability and longer lifespan\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Electro-Harmonix","offers":[{"title":"Default Title","offer_id":67813234638927,"sku":null,"price":1600.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/4354\/9519\/files\/images_5fcde29a-2bb5-480b-90dc-a5235dc0d2bc.jpg?v=1792490722","url":"https:\/\/theoldstockroom.com\/products\/electro-harmonix-300b-eh-no-boxespair","provider":"The Old Stockroom","version":"1.0","type":"link"}