I think this is #5 I’m losing count. These are so much fun to play the world needs a couple more! I used matte black sand textured enclosure. Which give this a good industrial vibe.
This is a pretty easy build for what you get. The board is a good size and parts are comfortably spaced. All of the pots are mounted to the board making wiring easy. The switches require some work but the pads are well organized.
The only down side is finding FETs and Ge diodes. Luckily D1 and D2 can be replaced by just about any type of type. D7, D8, and D9 could also be any type but Ge will have a noticeable sound to them. Ge diodes here will have a particular sound, not better or worse. If you’re looking for “that” sound you might stick with Ge for these. Otherwise test out any type of diode and use your ears to decide what sounds good here.
The main distortion circuit is based on the LM308 op-amp which are hard to get and can cost $5 or more, that’s a lot for an op-amp. Luckily the part is not critical. You can a few replacements. I used an OP07 which was $0.50 at Tayda.
The PF5102 FETs are hard to get. I used J112 from Tayda successfully.
And, it sounds amazing! This might be for sale check my for sale page.