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.



  • ANOS GE 6550

    NOS-6550-A
    $99.00
    ANOS GE 6550. Only unmatched singles available.
  • ANOS Genelex/GEC KT88

    ANOS Genelex/GEC KT88
    $299.95
    ANOS Genelex GEC Gold Lion KT88 originals, not the reissue.
  • ANOS Tung-Sol 6550

    ANOS Tung-Sol 6550
    $124.95
    ANOS Tung-Sol 6550 originals, not the reissue.
  • JJ KT88

    JJ KT88
    $44.95
    Detailed character, tightly compressed bottom end.
  • Penta KT88SC

    penta-labs-kt88sc
    $57.95
    More refined, detailed. Good for hi-fi and guitar alike. ****OUT OF STOCK****
  • Ruby 6550A-STR

    Ruby 6550 STR
    $49.95

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

  • Ruby KT88-STR

    Ruby KT88 STR
    $59.95

    Select 3-hole plate KT88 made by Shuguang in China. Also re-marketed as Valve Art.

  • Svetlana 6550C

    Svetlana 6550C
    $44.95
    Solid, reliable, lots of clean headroom.
  • Svetlana KT88SV

    Svetlana KT88SV
    $49.95
    Excellent tonal character. In stock.

17 Item(s)

per page

Set Descending Direction