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, August 17, 2018

The Gruntbox

Got a request for this one and I'm always up for a bass effect. So this week's Fuzz Friday is Mark Hammer's Gruntbox. It's a pretty unique design and a lot of flexibility. More info here. Schematic and demo files can be downloaded here.


  1. Made this with the TL074 and it works nicely. Can be marked as verified.