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Reviews Qty: (13)

Product code: JJ-KT77

Availability: Usually ships within 24 hours.

USD $‎19.95 Each

USD $‎19.95
  • The JJ KT77 is an alternative to the common EL34 tube.

    From our review: "Overall a nice balance of tone in bass, midrange and treble. The breakup is earlier than a 6L6 with more compression but not as compressed as the EL34. If you have a Marshall amp and find EL34’s too compressed and 6550’s too crunchy the JJ KT77 may be just the ticket."

    The now rare KT77 tube was introduced by MO-Valve in the late 1950's and has recently been brought back by JJ. They use the same base and biasing as any EL34 tube so they are a great option for substitution in any EL34 amp.

    If you are curious about how these fare in a hifi stereo amplifier be sure to read the Wall of Sound EL34 tube comparison for details.

    Tesla tubes Other JJ Electronics tubes         EL34 Tube TypesEL34 Tube Types
  • Additional Information and Downloads

    EL34 Tube Review for Guitar Amplifiers
    EL34 Tube Review for HiFi Audio

    Tube Matching Information:
    Power Tube Matching FAQ
    Perfect Pair System

    JJ KT77 Datasheet (PDF)
    Download Adobe Acrobat PDF reader

  • Warranty Information and Return Policy

    Warranty Period: 3 months

    All our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)

    If you receive a tube that does not perform to the manufacturer's specifications, please do the following:

    - contact us to get a return authorization
    - return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.

    Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.

    We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.

    These guidelines may be updated without notice.

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