Get your TAD Tube Amp Doctor 7025/E83CC, Highgrade Premium Selected tubes at Humbucker Music! 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! Description: No Microphony, No Hum - Clean Warm Tone, Punchy Mids, Fat Overdrive! Great warm clean tones, strong bass, punchy mids and fat overdrive with smooth top end. Q: When does a preamp tube become a Premium Selected tube? A: All preamp tubes labeled Premium Selected have passed the following tests: - Low Noise Test - Microphonic Test - Gain Test - Sonic Tests - Shock Tests - Listening Tests - Balanced Output Test HIGHGRADE SELECTION: But only those tubes which pass these tests best are labeled Highgrades. TAD Premium Selected/Highgrade tubes are guaranteed for a period of 6 months (according to terms of warranties) for the quality criteria mentioned above.tioned above.
