I received the boards and built it!
It does its job, but with a few odd behaviors, likely due to the modifications I applied to the original circuit. I need to experiment with it and take measurements to verify if truly works as intended. I think I observed some phase reversal issues, and I know for sure that some pots need to be wired the inverse what the silkscreen tells you.
Given that I made this as a learning project, that attenuverting is a long-solved problem, and that I have 4 more boards that work well enough, I probably won’t work on a fixed V2, but I will clean up the files and release them with errata, no support, and no recommendation to actually build it.
Very happy with it nonetheless, my first SMD order from JLCPCB worked exactly as intended. Very clean job of their part.
Here’s some jaypegs:
