Here's a nice little MOSFET-based clean boost that EQD used to make. It's actually pretty similar to… | Electronic schematics, Earthquaker devices, Diy guitar pedal
DIY Strat (and other guitar & audio projects): Building a quick Brian-May-style treble booster on Veroboard
Here's a simple clean boost circuit built by JHS. It's really just the Tim Escobedo Duente JFET boost with a fixed r… | Guitar pedals, Diy guitar pedal, Boost pedal
DIY Guitar Booster FET Booster J201 PCB and Parts | eBay