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.

Monday, November 21, 2016

zVex Super Duper 2-in-1

This is a pretty handy expansion of the zVex SHO booster. It stacks two SHOs together and adds a master volume control. This is laid out so the board is vertical in a 1590B oriented like the original.


  1. Replies
    1. Hey Nunggal, just use the usual 3PDT True Bypass wiring schemes (this is my fave with OUT1 going to the 'input jack' wire on the second 3PDT switch.

    2. Here's my diagram for 2-in-1 wiring:

  2. Verified.

    It sounds good as a clean or slightly gritty boost.