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Original Message
Re:Other than the heater voltage, is the 6cg7 a substitute for the 12au7?
Posted by woffeldjur on November 12, 2015 at 10:08:28:
"Other than the heater voltage, is the 6cg7 a substitute for the 12au7?"
And, if you are a bit unsure about the heater voltage, there is always the 8CG7..