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Single Ended Triodes (SETs), the ultimate tube lovers dream.

RE: 2A3 & 300B AC heater vs. DC heater

Al, hi. If using DC filament heating how about wiring one amp with leads reversed. That is, Pin 1 positive & Pin 4 negative on one amp and Pin 1 negative & Pin 4 positive on the other. Then you can just swap outputs every month or so. This may save some rewiring grief.


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