Spoke about this back in the old Xoxbox thread. Finally went ahead and ordered it again.
Based on 2 x MOS SID 6851 or SID 8580 soundchips from the Commodore 64. Can get a really good, non chip sound from this, much like the old SidStation by Elektron.
My 1st ever DIY build as well. Bit nervous about fucking it up.