Devastator

From the vendor

Let the mighty Devastator lay waste to your precious signal. As you might have already guessed you can use this PCB to build a clone of the Great Destroyer by Dwarfcraft Devices. So be ready for some screaming oscillations and distortion so vicious, your amp will ask itself what is wrong with you. Or just dial it to a nice smooth fuzz its your choice.

V2 fixed everything wrong with the first version and also has as slightly improved layout that gives you the option to exchange the internal trimmer with a board mount pot for extra flexibility

Build Docs V2

Build Docs V1

You can also get this as a kit from Musiking here