• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

‎volume control 8 channel I used transformer step volume type STA 522A 8x +relay set controlled by switch the result is surprising Vilem‎

‎I used an 8x volume transformer STA 522A controlled by relay and the switch result is surprising‎

:cop:

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‎I used an 8x volume transformer STA 522A controlled by relay and the switch result is surprising‎