Power Tubes

Power tubes, or output tubes, continue to amplify the signal sent from the preamp section so they can drive the speakers. Each set of power tubes will draw a different current (measured in milliamps), affecting how fast the signal gets passed through your amp. The speed of this current will have a big impact of the tone of your guitar amp.


  • Ruby E34L-CZ

    Ruby/JJ E34LCZ
    Ruby E34L-CZ(singles only)
  • Ruby EL34 BHT

    Ruby EL34 BHT

    Regular Price: $21.45

    Special Price: $19.95

    Developed for high plate voltage applications.

  • Ruby EL34BSTR

    Ruby EL34 BSTR

    Regular Price: $21.45

    Special Price: $19.95

    Very articulate, thick sustain. A customer favorite. Also known as EL34BW

  • Ruby KT66

    Ruby KT66

    Great cleans, with a nice grind. This Ruby tube is a re-labeled Chinese Shuguang tube

  • Ruby KT88-STR

    Ruby KT88 STR

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

  • Ruby KT88V-STR

    Ruby KT88V-STR
    Ruby KT88V-STR. Solid plate, triple getter.

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