• 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.

Chasing hum in a new tube amp

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bwarden

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Joined 2007
Chris-

They are glass 7 pin tubes without a plastic or phenolic base. Even cleaning the pins will get alcohol on the glass.

Sockets are brand new, and ceramic, if that matters.

Also, the measurements were done on the pins, not in the sockets, again, if that matters.

Bill
 
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