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RE: I tried it a few times, how about you?

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"I was tempted to think it would do just that, give me more vgain. But it's not a tube!"

What is not a tube?

CCS aside, the gain of a triode tube stage goes up as the plate resistor is increased. That is a direct result of the load line becoming more horizontal. That is just a fact and if you are not getting that result then you are doing something wrong.

BTW the theoretical max gain of a stage is the mu of the tube in use. That can never be reached but with a CCS plate load and a high 'following stage' grid resistor value you can get really close.

P.S. I may have mis-read your post. If you got more gain but not enough more gain then I would use a different tube, one with a higher mu.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"


Edits: 02/05/25

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