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RE: Perhaps you are ready to step up your learning.

Posted by 91derlust on January 18, 2017 at 21:45:50:
Thanks Pat.

I won't post to the other thread - I am tight for time at the moment.

One last thing though. Your comparo of 6C6 as pentode versus triode should be taken in context of your current build and system only - don't draw absolute conclusions from it. I suspect the pentode is highlighting deficincies in implementation. For example, pentode have low (no!) power supply ripple rejection; if your PS in noisy - and i suspect it could be - the pentode will sound as you have described. A triode has better PSRR. Also, pentodes are sensitive to screen voltage variation and bypassing quality, which will not be ideal in your design. Not trying to defend pentodes or suggest they are better... only that triodes are more tolerant of implementation and that is what you may be hearing.

Continue to enjoy!

Cheers,
91.