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. For a velvet-like reduced treble sound, add in one or both optional 47pF caps. See the scheamtic below for a Tone control mod that provides less extreme settings. Thanks to E-H and Christian.
Listen to it!
Pablo De Luca (aka Gringo) contributed a PCB layout for the Whisker Biscuit (PDF, 132k)