I like your tube display. Are you able to change the heater voltages or is it a fixed 6.3?

January 27, 2025 - 00:55 UTC

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Thanks, so far I’ve only used the Radio Shack transformer for the 6.3 tubes I’ve shown so far.
Except for the 5U4G rectifiers and the 300B’s everything I got is 6.3
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