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.

Friday, April 24, 2015

Marshall ShredMaster

Here's another one from Marshall's great pedal line from the early 90s. When it was released it was considered a high gain distortion, though probably wouldn't be categorized as such today. It was made famous by Thom Yorke and Jonny Greenwood from Radiohead and covers more than just shredder territory.


  1. works, verified
    lots of noise, i think i must use shielded cable

  2. this is sample demo

  3. I made the PCB version of this one. I had to reverse legs 1 & 3 on the Level pot to get it to go ccw-quieter/cw louder. My build is hella noisy, too... But I'm thinking once it's in the enclosure with some shielded wiring it should be good.

    Thanks for the drill layout on this one, too! Saves me a lot of time and screw-ups. I'm terrible at Photoshop! ;)

  4. Hi! I made this pedal and works fine, but here is my question: how can I increase more gain?