The Blend Knob I want is to put Clean back into the Overdrive part of Drive A so you have the Punch rather than turning down the Drive Knob and cranking the Volume pot.
That is what is in Version. 2 of this pedal.
I built this and I have Drive A With the Split and Blend Circuit as Discussed.
It Works Great by adding Clean back into Drive A no matter how high you crank the Gain knob.
Drive B shares the same Op Amp as the other half of the Circuit & will not function correctly.
It thumps when the footswitch is engaged & sounds like a Fart and the higher the Gain knob the more gated it gets.
I bypassed the Drive B Footswitch, Same Result
I swapped the Drive B pot, Same Result
Volume & Tone knob work as required
It also kills Drive A if that is ON at the same time.
I've read that certain circuits will not work with the Split & Blend.
Any advice would be Great.
UPDATE: 220nF A & B Input Caps were missing from Layout
Layout has been updated
Pedal is COMPLETED!