Re: UY41 Valve.
As I understand it, Dick (Other members please feel free to correct me if I'm wrong) it would be O.K. to replace a UY42 with a 41, but not the other way round. Having looked at thedata on the two valves, I'm surprised that Paul (Stylo N M) was able to use a UY42 in a DAC90A, where it would surely have been overvoltaged.
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