fet channel switching schematic

[Gralton]

I am in need of a FET switching mod that I can install in my
2 channel amp. The current scheme is noisey and uses a footswitch with a stereo chord. I would like to eliminate the external signal and switch internally.
Please advise.

[d95err]

What's the amp? Schematic?

JFETs cannot handle voltages of over 40-50V, so in a tube amp, you need to put them in locations where you are certain you won't go above that, or use some other switching method e.g. relays.