This used Source Audio C4 Synth is in Very Good condition with modest signs of handling and use.

FROM SOURCE AUDIO:

This advanced piece of gear offers all the sound construction tools of a classic Eurorack modular synthesizer and packages them in a compact and easy-to-use effects pedal for guitar and bass. It is essentially a Eurorack modular synth in a box with unprecedented tracking abilities, lightning-fast response, and countless sound options.