Commodore 64 Custom Modified C64! Chip Synth for MSSIAH

via this auction
"designed especially to run the MSSIAH and prophet-64 TB-303 emulator, monosynth, Drum machine & sequencer

Features:
+ 4 analogue controllers with on/off switch for each port
+ Custom Key Graphics showing MSSIAH functions
+ Standard A/V out - for use with a normal C64 DIN A/V cable (included).
Click here for audio samples"
+ Custom underside label Serial # 001 !
+ Colour-cycling power LED
+ Upgrade your crusty yellowed C64C!
+ days of work put into it!

- The unit contains a latest edition C64 motherboard, SID 8580 chip is NOT included!
You'll need to supply your own.
so if using it for audio you can add your own post processing via effects pedals or in a DAW
+ Audio input is disabled (grounded) to reduce noise.