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Questions about tubes and gear that glows. FAQ

Actually...

209.215.39.21

The well known fact you make note of is open to dispute. I think if you carefully research the matter you will find that longer life is accomplished with heater voltages that are a couple of tenths lower....not a volt and a half lower. And a 12AX7 is intended for 12.6 volts on the heater. So I'd say 12.3 is about as low as I'd like to go. But like I said, YMMV in your equipment.


Russ


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