View Single Post
Old 24th May 2021, 2:33 pm   #2
Robert Gribnau
Join Date: May 2017
Location: The Hague, The Netherlands
Posts: 230
Default Re: Advice on this linestage build

The second valve misses a grid resistor.

I am afraid that your tone control is not going to work very effectively because the gain of the second valve is only about 20. That gain is used (by feedback) for the tone control. A gain of only 20 is too low to cover the range of the tone controls from the lowest to the highest settings (about - 15 dB to + 15 dB). In the schematic you linked to, the gain of the second valve is about 70.
Robert Gribnau is offline   Reply With Quote