I built this a few years ago. I got it out and played it for a while. sounds pretty good. This is a Big Muffin with a diode lift switch, and a blend control. The PCB is from https://shop.pedalparts.co.uk/product/bassblendmuff. It worked well but the board doesn’t have an LED! So the wiring is a little all over the place. Having the LED on the board is really cleans up the wiring!
This is one of the first boxes I made with the CNC machine. Those circles too forever to mill. For fun I also milled the back. I thought this would be a unique and interesting design. For production it would be too slow. maybe if you had a big CNC machine with more sophisticated software it might be viable. My CNC is only big enough to fit a single 1590B at a time.
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