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.

Wednesday, May 18, 2016

Run Off Groove Big Daddy/Grace

Here are two great sounding, yet simple circuits from Run Off Groove. The Big Daddy uses a JFET gain stage to push a 386 chip, while the Grace uses a JFET buffer in front of the 386 for added sparkle. Parts-wise, there's not a lot different between the two, so I've only drawn up one board. Schematics, sound clips, and more info can be found on the ROG site.

To populate the board for the Grace, omit the 2.2uF capacitor, jumper the 15k resistor, and replace the 2.2k resistor with a 15k one. See below: