This new "project" is also dedicated to the audio SID processor.

Try to make it more versatile,  guitar effect, vocoder, ...

Based on a C64C mobo, breadbin style Case

messiah cartridge

Cynthcart from Paul Slocum & Midi interface by Nebulah

TJT sid2sid board

This board is a full enhancement of the second SID possibility.

- 2 SID, 6581 and/or 8580 integration (support 9v and 12v)

- 2 balanced mono line INputs with level controls (one for each SID)

- 2 balanced mono line OUTputs (one for each SID)

- 1 mono-mix amplified OUTputs of the both SID

IDE64.org A.C. 9V Power

Reference...

TJTSID2X on mssiah & Prophet64 forum