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Re: Non-match power tubes

24.205.20.241

Steve,

So you've had supposedly "matched" tubes go ballistic---because only the Gm matched, but not the other parameters stated?

How do you compensate for this when the tubes "break-in" or start to wear out unevenly? Is simple re-biasing good enough? Especially, when all tubes are sharing one cathode resistor/bypass cap?


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