Thermionic Overdrive on 18 volts

[PKRPedals]

Has anybody run there Thermionic on 18 volts? How does it sound? I'm almost done with mine and was just curious.

 

[Chuck D. Bones]

The LEDS on the front panel will get brighter. You won't hear much difference, if any, unless you have the trimmers maxed or overdrive the &^*# outta this one with another pedal. The higher voltage provides more headroom, but since all of the gain stages except the last one (IC3.1) have diode limiting in the feedback loop, they don't need any more headroom.
As long as C20 is rated for at least 20V, it won't hurt it, try it out!

 

[Jiuk]

It works but I don't recommend it. Increase noise.

 

[PKRPedals]

Thanks. I will stay with 9 volt then, I don't want more noise.