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What do the driver tubes in tube power amps do??

Discussion in 'Amps and Cabs [BG]' started by PICK, May 6, 2002.

  1. PICK


    Jan 27, 2002
    Sydney, Australia
    This may be a stupid question but what do they do???
  2. They "drive" the power tubes. Seriously.

    They amplify the signal from the preamp and give it enough power (like just a few milliwatts, in the form of being able to supply a voltage into a lower impedance than the preamp is designed for) to drive the output tubes to full power.

    The phase inverter for push-pull amps is usually included in the driver stage. This takes a single-ended signal from the preamp and uses it to create a signal that is the exact opposite (180 degrees out of phase) to feed one side of the push-pull output stage. That way, when one side is pushing, the other side is pulling. Can you dig it.

    If you need more info, just ask.

  3. PICK


    Jan 27, 2002
    Sydney, Australia
    So do they affect tone???

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