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RE: EF39 as 300B driver...

Aldo Do you still like the 2e25? I bought 30 of them.I got them for ~5$ each! I hope you still think they are good. I am almost too afraid to ask. I am going to try them soon as a driver and maybe a output.

I have been down the pentodes paths that you enquire. I think they are good sounding I think as triodes they are linear. ef37a has an unusual presence or peak in the mid(not sure which). I think the 6c6 are better in triode mode. I have not tried them in pentode.

The proven komuro driver scheme mentioned in this AA thread below is an excellent idea. And a interesting valve article there as well. The 6j5 or 56 direct coupled to a 6v6/6f6 to drive any medium triode is a good combo I think even if using a trans instead of stacked supplys.




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