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valves

  1. E

    Solid-state audio amplifier complexity vs valve/tube

    This posts aims to get opinions about why solid-state audio amplifier circuits are almost invariably much more complex than valve/tube amplifier circuits. One could think that, if a good tube circuit is just redone, susbtituting each tube by a transistor (common cathode by a common...
  2. E

    Measure 500V DC with digital scope and 100:1 probe

    Hello everyone. As this is a safety issue, and I'm not sure, I would like to ask instead of experimenting. Most digital scopes state a maximum input voltage of 300 V RMS. I want to make some quick measurements on a live tube amp circuit and its power supply, which may go a little bit over that...

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