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Amp Gurus---

Discussion in 'Amp Central Station' started by Bill Beck, Apr 12, 2003.

  1. Bill Beck

    Bill Beck Tele-Meister

    Mar 3, 2003
    Indio, CA.
    Why don't s.s. amps require input and output transformers?
  2. EMan

    EMan Tele-Holic

    Apr 6, 2003
    Dallas, Texas
    Disclaimer: I am no amp Guru.

    Transistor output stages have the capability to cunduct lots of current due to their low impedances. You can get just a couple of E - C ohms in a saturated transistor.

    Tubes, on the other hand, have very little current capability due to their high plate resistance (1000's of ohms).

    The OT in a tube amp makes the tube's plates 'look' like a low impedance source via it's primary to secondary impedance ratio, and enables it to deliver the current required to drive a speaker.
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