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Thread: kt88 power tubes

  1. #1
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,584
    I'm jamie.

    Default kt88 power tubes

    an interesting one,
    ive just replaced my gec kt88's (quad) with sovtek kt88's. now i know the gec's are supposed to be the holy grail of kt88's and command huge sums but im not hearing a huge drop in the sound,infact the sovteks seem to have a bit more omph to them,there is a subtle difference in clarity in favour of the gec's at the moment but the sovteks need some hours on them.

    the price difference is 4 gec's 1000+ and the sovteks were 90!
    do different brand power valves really make that much difference to the sound,at the moment i think not.
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon KB with vienna upgrade
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers
    KARMA Interconnects & Tonearm Cable

  2. #2
    Join Date: May 2018

    Location: Woking

    Posts: 459
    I'm Chris.


    I was very surprised by the humble performance of my JJ kt88's. In my Ming Da they outperformed Gold Lion reissues (about the best of new production I've found until now) by some margin.

    Their bass quality is something quite special. They sound how they look, fat.

    All about the circuit and what performs best in that circuit.

    I love finding a cheap equivalent to replace expensive/unobtainable tubes.

    Haven't heard a real GEC though....
    System 1: - Amp: Ming Da MC 368B -
    - Source: Linn LP12 (Denon 304) - Arcam rPhono - Pioneer N-30K - Musical Paradise MP-D1 mkII -
    - Speakers: Quad 63's - REL T3's -

    System 2 - Amp: Musical Paradise MP-701 - Neurochrome 686 -
    - Source: Audio Technica LP5 - EAR834p clone - Pioneer N-30K - Musical Paradise MP-D1 -
    - Speakers: Cambridge Acoustic "Grand Master Evolution"

    System 3: - Amp: Custom N-core 300B SEP -
    - Source: Novafidelity X12 - Jolida Glass FX III -
    - Speakers: Loth X BS1's - REL T3 -

  3. #3
    Join Date: Mar 2009

    Location: Nottingham

    Posts: 439
    I'm Ian.


    Good to hear that the sovteks are performing well, i and many others rated them.

  4. #4
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 3,870
    I'm Lawrence.


    I rather like Shuguang power valves but I wouldn't touch their signal valves.

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