As I look back on this project I think I would change the power supply to the Jfet circuit. I'd like to hear it without the Lm217 regulator (LM2187 is a typo , by the way) You can get a 40 volt transformer from AllElectronics for a few bucks that would work well with some caps and a choke or even a simple PI filter. So go ahead and do that if you like and tell me what it sounds like.
The power to the 5002 ,if you use them, can stay. The CMRR is good enough and the noise rejection from the power supply regs are low enough to not worry too much about it if you're not too fussy about these things. If you're putting phones into the output then I think I'd be more concerned all around.
I have gerber's in Eagle if enough builders want them I'll put them up on the site and the hex files for the uC for those of you who can program your own chips.
For those doing commercial work contact me but I'd wait for the new interface (PI) to come out as I updated the display and 128 positions on the pot is a lot nicer in my view.
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Pwr bottom (all pwr boards exactly 3" (76.2mm wide))
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