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, September 28, 2015

Mad Professor Sky Blue Overdrive

Here's another BJF designed circuit: the Sky Blue Overdrive. There are 4 controls: Z adjusts input impedance, Distort. controls gain, Texture adjusts the hard clipping, and finally the Volume. It uses 3mm LEDs in the feedback loop of the opamp, and then JFETs for hard clipping.



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7 comments:

  1. BerkicauApril 17, 2016 at 10:41 AM

    what is the best substitute for OP275?

    ReplyDelete
  2. Effects LayoutsApril 17, 2016 at 12:52 PM

    Try some dual opamps like the TL072 or NE5532. Also Google is your friend

    ReplyDelete
  3. BerkicauApril 18, 2016 at 4:16 AM

    volume 2 to out, dist 3 left unconnected?

    ReplyDelete
  4. BerkicauApril 18, 2016 at 7:10 AM

    using NE5332, works
    u can mark it verified
    thank you David

    ReplyDelete
  5. CharlsRTFebruary 12, 2018 at 7:54 PM

    Is posible to version of pots mounting?

    ReplyDelete
  6. Lucas1448April 26, 2020 at 12:55 AM

    Can I replace the fets with j201 or 2n5457? Thanks for the layout

    ReplyDelete

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