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, August 31, 2016

Menatone Blue Collar

Here's an oldie but a goodie from Menatone. The Blue Collar was released around the same time as the Red Snapper and is more compressed and focused in comparison. It's also based around the Tube Screamer without the input buffers and with several mods. This layout reflects a newer version of the Blue Collar, but the older one can be built on the same board. Just increase the input cap to 100n, omit the 56p cap from pin 5 to ground, lower the output cap to 100n, and use an A250k pot for the Volume control. Here's the schematic for reference.


  1. Excellent as usual!! I want build it! can I use 4148 for D1-3?

    1. Yes, forgot to note that. 914s (basically the same as 4148s) are what were used on the originals

  2. Verified! Build this and the two things i did since i presently don't have these parts was changing the 22uF to 15uF and 5k pot to 10k and it sounds just fine.

  3. I built the old version of this following the explanation above, but the gain seemed giving no response, and the volume knob acted a little bit weird. Any suggestion?

  4. Verified, but the presence knob was tapered backward. 1 goes to 3.