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RE: very nice but I have a question

Posted by Eli Duttman on January 27, 2009 at 21:32:14:
Leave things as they are! The Miller capacitance of a 6SL7 section is substantial. The very last thing you want to do is introduce HF rolloff.

R_P in a 12B4 is approx. 1100 Ω. As 9 KOhms is considerably more than 3X R_P, you can relax. :>))

BTW, the "corner" freq. for 3.3 μF. working into 9 KOhms is 5.36 Hz. While not terrific, that number is certainly tolerable. A F₃ <= 5 Hz. is the goal.

Eli D.