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, July 1, 2015

Univox Super Fuzz

This circuit is most known for being manufactures and sold by Univox, but was designed by Shin-Ei as the FY-6 and licensed to several manufacturers including Ibanez, Teisco, Kent, Companion, Apollo, and several others. The Super Fuzz has been used by many guitarist since it was first made in 1968, including Pete Townsend, J Mascis, Poison Ivy, and Josh Homme, just to name a few.

I did a layout of the Super Fuzz almost 8 months ago, and was always disappointed it wasn't really 1590B friendly. Well, I finally got around to redoing it and this version should fit just fine in 1590B. I based it off the original Super Fuzz circuit board, but with non-standing components and added polarity protection, increased the power filter cap, and added a pull down resistor.


  1. Verified! BUT, two 10uf caps need to be reversed. It's the capacitor coming from the collectors of the two paired transistors (one the upper right of the pcb) and the one immediately comming of the emmiter of the 3d transistor of the schematic which cap is followed by a 470 ohm resistor (and is placed right underneath the 150k and 10k resistors)

    1. Cool. Thanks for catching that. Updating the layout now.

  2. The superfuzz is one of my all time faves, I've built loads on vero, PCB and even SMD. Two mods I highly recommend are a voltage sag pot and a diode selector - superfuzzes respond really well to voltage sag, getting less bright and very splatty which is awesome. For diodes I usually wire a 3 way toggle so I have back to back Si, back to back Ge or 1 of each. Play loud :-)

  3. How to use footswitch for tone control? Thanks