This is a great mash up of two iconic circuits.
The ‘Mule’ preamp has a ton of overdrive and distortion tones, from smooth and bluesy to super heavy. You can tweak the gain, volume, EQ, and presence knobs to dial in the kind of sound you want. The ‘Kicker’, true to it’s Klon roots, is a super transparent overdrive pedal. It makes your guitar sound bigger and more alive. Turn the gain up, it gets this smooth, crunchy sound that’s awesome for blues or classic rock. The tone knob is really sensitive — just a little turn changes things a lot. I suggest trying this to really shape that tone you are chasing. Switch them both on and be read to be amazed.
Once again, GuitarPCB has nailed it!!

