6550 / KT88 / KT90

KT88's generate a lot power, handling significantly more plate voltage than other power tubes. As a result, KT88's and 6550's are produce cleaner tones and have low distortion, making it popular amongst bass amplifiers and high end audio applications.



  • Electro Harmonix KT88

    Electro-Harmonix-KT88
    $36.95
    Great tonal character for the price. In stock.
  • JJ KT88

    JJ KT88
    $38.95
    Detailed character, tightly compressed bottom end.
  • Ruby 6550A-STR

    Ruby 6550 STR
    $38.95

    Ruby 6550A-STR is a Chinese Shuguang(Sino equivalent) - selected by RUBY.

  • Svetlana 6550C

    Svetlana 6550C
    $37.95
    Solid, reliable, lots of clean headroom.
  • Tung-Sol 6550

    tung-sol-6550
    $38.95
    Extended highs, sharp bottoms. Wide bodied tone. ****SINGLES ONLY****
  • Valve Art 6550

    Valve Art 6550
    $39.95
    Valve Art 6550

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