Ruby Active Tone Control Mod

[kgull]

I'd like to take the Ruby amp and add an active one knob tone control. Tone stack is from here.

From my admittedly limited understanding of how all this stuff works, I'm pretty sure this should work but I figured I'd post first in case I've overlooked something. Only thing I can imagine is that I've misunderstood how the feedback loop works (wouldn't be a surprise) and I'll have to use two opamps, one for tone and one for amplification.

Anyway, here's a photoshop of what I plan on doing. I'll probably order the parts Monday morning.



Any words of advice or pointing out of errors I've made would be greatly appreciated. Thanks!