{"product_id":"tad-5u4gb","title":"TAD Tube Amp Doctor 5U4GB Rectifier, Premium Selected","description":"\u003cspan style=\"font-family: Verdana; color: #112244;\"\u003eGet your \u003cspan style=\"font-weight: bold;\"\u003eTAD Tube Amp Doctor 5U4GB Rectifier, Premium Selected\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 chosed 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 \u003cbr style=\"font-family: Verdana; color: #112244;\"\u003e \u003cspan style=\"font-family: Verdana; color: #112244; font-weight: bold;\"\u003eDescription:\u003c\/span\u003e\u003cbr style=\"font-family: Verdana; color: #112244;\"\u003e \u003cbr style=\"font-family: Verdana; color: #112244;\"\u003e \u003cspan style=\"font-family: Verdana; color: #112244;\"\u003eThe Straight One! The 5U4GB rectifier tube has a straight glass envelope, also known as a straight bottle. This type has been widely used in U.S-made guitar amps from the 1950s to the 70s. The 5U4GB has a slow start feature, which protects output tubes from high voltage peaks when you switch the power on. \u003cbr\u003e \u003cbr\u003e \u003cbr\u003e Q: When does a tube become a Premium Selected tube?\u003cbr\u003e A: All 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 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","brand":"TAD","offers":[{"title":"Default","offer_id":687877292033,"sku":"TAD-RT504","price":24.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/4003\/products\/TAD_5U4GB.JPG?v=1516134553","url":"https:\/\/www.humbuckermusic.mom\/products\/tad-5u4gb","provider":"Humbucker Music","version":"1.0","type":"link"}