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Thread: UL power tubes question

  1. #1
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    Default UL power tubes question

    Hello,
    anybody knows anything about these tubes and what is the difference between KT 88?

    I found this in my Pitbull Ultra Lead with old VHT logo and without graphic EQ. I have it almost two years. I think this is the only UL in my country.


  2. #2
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    Jun 2012
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    Your UL sounds a lot like mine. A 1993 G100 model.
    Info I found on the KT90 I found is a follows;

    The KT90, or in full, "Kinkless Tetrode 90", is a beam power tetrode and features the same octal socket as its smaller variant, the KT88. It may therefore be used as a substitute, given appropriate re-biasing when used in push-pull configuration.

    The KT90 is currently manufactured by Electro-Harmonix, who claim that, despite its different construction, it possesses similar sound characteristics to the EL34 valve.

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