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, June 8, 2018

EarthQuaker Devices Dirt Transmitter

To close out EarthQuaker week, here's the Dirt Transmitter. I traced this one myself and below is a video showing the process. It's similar to a Fuzz Face, but a little different. I found this description from (I'm assuming) Jamie over on TGP:

I guess it's kinda like a fuzz face but it started as two gain stages running into each other with an input gain control and a sag on the second stage (bias). Voltage feedback was added and it became similar to a fuzz face in topology but it sounds nothing like one IMO. In this case the sound is totally dependent on the transistors, replace them and it's a whole different beast.

Here's my video on tracing the circuit as well as a demo:


Here's the schematic:

And the layout:

You can also order a few boards from OshPark here.


Added a perf layout for this based off the Eagle board above.


  1. Wow, well done! You are a treasure for DIY community!

  2. You're a stud, David! Thank you for all you do!

  3. Epic post. I already ordered some components. 🙃😬

  4. just an FYI. on your perf layout the 100p from the base to collector of Q1 should be a 470p according to your schematic and your top layout.

  5. built it. verified! it sounds awesome. thanks for drawing up the layout!

  6. here's pic pf my finished build:

  7. Awesome job.. good video! Good to follow you!

  8. Friend how do I leave the value of the components on top of them? how does this layout. I use Eagle 7.6.0

  9. Hey there, I'm having trouble finding the 2n1711 transistors anywhere, are there any alternates? Thank you so much great help !!

    1. Low gain silicons like 2N2369, 2N5550, etc. Use sockets and experiment.