This is the latest schematic with the updated tone stack.
I also changed the plate resistor on the first triode. I went with a 150k and it adds a little gain, compared to the 100k, and I think it softens up the overdrive a bit.
I look at it as the first triode of this amp needs to be somewhere close to an actual plexi preamp where the channels are jumped, mixing the bright and normal channels.
So what is the verdict on this amp? Any plans for sound samples?