you could build an Orange Squeezer (Cupcake) and incorporate some suggested mods for bass that tonepad lists. to correspond with the madbean build doc, you could do the following:
1. Change C6 to 1uF
2. Change C7 to 10uF
3. Change R8 to 200k
I also know people who use the stock OS on bass, and I plan on building one for my rig.
Ian
EDITED: #2 Has the correct part, thanks for catching the mistake Misha.