Turn A Junk Keyboard Into Bass Pedals (Synth DIY Project) – Synthtopia
MOD Kits DIY Unveils the Rock Bottom Bass Fuzz Pedal Kit – No Treble
How to Modify Guitar Pedals: A complete how-to package for the electronics newbie on how to modify guitar and bass effects pedals: Wampler, Brian: 9781434801067: Amazon.com: Books