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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.
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Help with ST-70 variant hum in both channels
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2025-03-12 1:30 pm
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Help with ST-70 variant hum in both channels
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