This is a fairly simple monosynth with MIDI interface. 2VCO's with pitch offset and mixer. AR or ASR option and velocity and pitch amount for VCF and ADSR and velocity for vca.
I should build my kit here someday. Mostly pretty reliable stuff though. Doubt too many issues arise except bad solder etc. :-)
Not sure what all might be in these yet. Ask if you need a specific part. But PAIA has been great!