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In Reply to: RE: Best sounding power pentode/tetrode in triode for SE? posted by andy evans on October 03, 2020 at 02:14:02
I had tried it years ago. The sound is comparable to KT66 triode mode.
Some British even claimed the sound was similar to PX25.
Fascinating valve, but requires a high primary impedance for the OPT since Rp is 2.6K in triode.
There's the PT5 but that looks very scarce - can't see any meaningful data. Are there triode curves for PT15?
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