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, November 22, 2014

JFET Boost

Here's a quicky. It's an old Dragonfly design and was my first perf build.


  1. Yes clean booster ,very very perfect


  2. I built this pedal with mpf102 and it sounds ugly, is it possible that the replacement you use is not the right one?
    The transfer image lacks a hole for a resistance of 2.2k?

  3. What is a replacement for J201?

    1. Try 2N5457, or F245A. I used both, and works great.

  4. Does this scheme work or do I need to change something in the leyout ?

  5. To whom it may concern you can use a j113 if you change the 22k from 9v to a 10k just make sure to check pinout on transistor.