(19 customer reviews)


NessTone KT88

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The NessTone KT88 is a hand selected, tested and matched quality tube readily comparable to the Genalex Gold Lion KT88. Lush, full soundstage with huge gain and headroom. Crystal clarity. Give these a try – you’ll love your TONE!!
WARNING: Cancer and Reproductive Harm-www.P65Warnings.ca.gov.

Additional information

Weight 7 oz
Dimensions 7 × 2 × 2 in
Single Tube or Matched Set >

Matched Octet, Matched Pair, Matched Quad, Matched Sextet, Single Tube

19 reviews for NessTone KT88

  1. Sean McLaughlin (verified owner)

    So far I am very pleased with my purchase. I am still a newbie to building guitar tube amps and this is the first KT88 I have tried but I am very pleased with the sound so far. Ordering was simple, it shipped quickly and the price is great.

  2. Francisco M. (verified owner)

    Fast shipping, tubes broke in nicely for 40 hours. Good full range sound,

  3. Scott M. (verified owner)

    The matching on tubes was excellent. These are very nice. high quality KT-88’s. I am very pleased with my purchase and I received my order very quickly. Great Job!

  4. Phil shea (verified owner)

    I purchased a matched quad KT88 for my prima Luna prologue premium amp and they sound GREAT. These tubes really woke this amp up!! Fast shipping and a quality product.

  5. Barry (verified owner)

    They biased up easily and were quite solid. The sound seems great though I have not done critical listening to make a more profound judgment.

  6. Barry (verified owner)

    The EH tubes they replaces were biased for 35ma. The new tubes came in at over 75ma and I had to bias them down. Honestly I am not sure if that was good or bad. One could argue that the gain was higher or lower depending on how you look at it. In any case they sound fine and no problems. If I had a tube curve tracer I might be able to analyze them more.

  7. Michael K. (verified owner)

    Exactly as expected. Very good. Thank you.

  8. Robert Peterson (verified owner)

    These NessTone KT88’s are awesome!!! They’re really beautiful looking tubes and sound even better. Very powerful bass, fluid midrange and sweet highs. I’m afraid my power tube rolling days may have come to an end. However, I’m sure the time will come when I’ll have to roll in my second favorite power tubes, the NessTone EL34’s.

  9. Robert Peterson (verified owner)

    Here’s a picture to go with my review.

  10. Robert Peterson (verified owner)

    Okay, here’s the picture for real…

    Image #1 from Robert Peterson
  11. Paul Hayes (verified owner)

    I have a new quad of Nesstone KT88s. I must say they’re just as good as the Gold Lion KT88s that have now be religated to backup tubes. Outstanding deal!

  12. Jonathan K (verified owner)

    Biased up last night. These sound great and are matched very closely. Will definitely buy more when the time comes.

  13. Michael W. (verified owner)

    Good tube for the price. There are better KT88/6550 tubes out there but they will cost twice as much. Note that the glass is slightly tilted from the base if the tubes are used in a hifi amp, but they are out of sight in a guitar amp so it doesn’t matter.

  14. Angelo D. (verified owner)

    Truly an audiophile bargain. The tubes play as well as tubes 4 times the amount. Amazing 3-D sound stage in every region of my speakers portrayal of the music. These KT88 tubes sound the best that I’ve experienced through my VAC Super Avatar integrated amplifier and First Sound Presence MkIII Tube pre-amplifier. In a word, the presentation is stunning! Based on this experience, I will be purchasing preamplifier and other tube varieties in the future. Thank you for these wonderful tubes.

  15. Murry Kahn (verified owner)

  16. Matthew K. (verified owner)

    I just got them installed and they sound good already. Might deserve a 5 but too early to tell.

  17. Robin Ono (verified owner)

    Not the best sounding kt88, but really not bad at all. It is, however, one of the best looking tubes around. Chromed base looks awesome.

  18. Donald Lair (verified owner)

  19. Joseph M. (verified owner)

    Excellent sounding tubes in my single ended tube amplifier. A+

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