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  1. A

    Strange writings inside Amps

    What is it? Something like: "HELP!! I'm being held prisoner in a Petaluma guitar amplifier factory!" My father once got some Michigan license plates with a note: "HELP!! I'm being held prisoner in a Michigan license plate factory" At the time, the license plates for the State of Michigan...
  2. A

    Switching between channels using different wattage for each

    That's correct. When one switches power level, the amp is switching bias on the tubes. Anytime you switch bias or other property of the circuit, the amp jumps to a new "Q" point which represents the "no-signal" conditions of voltage and current flow. When the amp makes such a change; one gets...
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