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.

Saturday, February 21, 2015

Dirty Boots Overdrive

Found the schematic for this over in the Aron Nelson Gallery. It's designed by Scott Frein. Uses a simple JFET buffer to help push the transistor-based drive section. Here's his description:

A pretty simple overdireve. The buffer on the front really brings it to life. Good AC/DC,ZZ Top crunch from this. Hit it with a booster and go from JCM 800 to Fuzz.


  1. Hey brother,

    This is Raf from Brazil again.

    Well, unfortunatelly I can't find the J201 and the 2N5089 for this project, and the 2N5457 for the Fulltone Fatboost anywhere around here.

    I could find the 2N5088, 2N5087 and the 2N5064, though. Could I replace them with those?

    Thanks again for your help,


    1. No, Q1 in this effect needs to be a JFET. Same for both transistors in the Fulltone. If you're limited to those 2N series, I would say try some fuzz effects. You could build the Jordan Bosstone with a 2N5088 for Q1 and a 5087 for Q2. The EHX Axis Fuzz/Guild Foxey Lady would also be a good candidate (use 2N5088s). You could also try the Greer Amps Green Giant, Earthquaker Devices Speaker Cranker, or the Lovepedal COT50. But they're very closely related to the Lovepedal Woodrow and would give you a pretty similar sound.

  2. Hi, maybe there is an error in the scheme, can you show the original scheme?

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  4. The layout is missing a 100k resistor from Q2 base to v+. Adding an extra row up top would give enough room to fit the resistor and make the connection.