This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Friday, July 20, 2018

Run Off Groove Whisker Biscuit

For Fuzz Friday here's the Run Off Groove Whisker Biscuit–Big Muff meets Bazz Fuss. From the ROG site:

The Whisker Biscuit is a hybrid of the Bazz Fuss and the Big Muff Pi. A single Bazz Fuss stage replaces the two clipping stages of the BMP. Smooth, super-long sustain, and good clean-up with the guitar volume knob make this circuit an interesting alternative to the standard BMP.

I've included the optional 47pF caps as well as the tone control mod. Omit the 47pF caps if you want more treble, and if you prefer a more standard tone stack, replace the 22k resistors with jumpers and use a B100k pot.


  1. Could You put a 1M pot before the input and have it be at sort of a gain control?

    1. Yes, though a smaller value would work as well. 100k, 250k, etc.