{"product_id":"tad-tube-amp-doctor-el84s-str-blackplate-matched-pair-premium-selected","title":"TAD Tube Amp Doctor EL84S-STR, Blackplate, Matched Pair, Premium Selected","description":"\u003cspan style=\"font-family: Verdana; color: #112244;\"\u003eGet your \u003cspan style=\"font-weight: bold;\"\u003eTAD Tube Amp Doctor EL84S-STR, Matched Pair\u003c\/span\u003e tubes at \u003cspan style=\"font-weight: bold; color: #339966;\"\u003eHumbucker Music\u003c\/span\u003e!  As one of the largest dealers of high-end amplifiers in the world, we know and understand tubes (and the amps they go in). TAD tubes are carefully selected and undergo very strict quality control before being offered for sale. If they don't past this rigorous testing, they are not chosen to be TAD tubes. We highly endorse TAD replacement tubes for any high-end or boutique amplifier!\u003c\/span\u003e\u003cbr style=\"font-family: Verdana; color: #112244;\"\u003e\u003cspan style=\"font-family: Verdana; color: #112244;\"\u003e\u003cbr\u003e \u003cbr\u003e Due to its diameter of 22.5mm, the TAD EL84-STR does not fit into older Marshall DSL401 and UK made VOX AC15 TBX amplifiers. The only tube which fits these amps is the EL84-EI. (ordering number: NN471) \u003cbr\u003e \u003cbr\u003e Q: When does a power tube become a Premium Selected power tube?\u003cbr\u003e A: All power tubes labeled Premium Selected have passed the following tests:\u003cbr\u003e -    Plate Current (PC) and Amplification (TC)\u003cbr\u003e -    Low Noise Test\u003cbr\u003e -    Microphonic Test\u003cbr\u003e -    Sonic Tests\u003cbr\u003e -    Shock Tests\u003cbr\u003e -    Listening Tests\u003cbr\u003e -    Shorts \u0026amp; Leakage Tests\u003cbr\u003e \u003cbr\u003e Premium RT-Matching of Power Tubes: Our Premium Matching is an exact matching of power tubes with identical Plate Current (PC) and Transconductance (TC).\u003cbr\u003e \u003cbr\u003e TAD Premium Selected tubes are guaranteed for a period of 6 months (according to terms of warranties) for the quality criteria mentioned above.\u003c\/span\u003e\u003cspan style=\"font-family: Verdana; color: #112244;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-family: Verdana; color: #112244;\"\u003e\u003c\/span\u003e\u003cspan style=\"font-family: Verdana; color: #112244;\"\u003e\u003c\/span\u003e","brand":"TAD","offers":[{"title":"Default","offer_id":17058693087278,"sku":"TAD-RT772","price":47.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/4003\/products\/TAD_el84s_str_-_Copy.jpg?v=1563483792","url":"https:\/\/www.humbuckermusic.mom\/products\/tad-tube-amp-doctor-el84s-str-blackplate-matched-pair-premium-selected","provider":"Humbucker Music","version":"1.0","type":"link"}