Used GFI System Synesthesia Dual Channel Modulation w/ box

The GFI Synesthesia. An endless modulation system boarding on giving you option paralysis. Run 2 DSP modulation algorithms at the same time to create new unique sounds and textural guitar tones. Either cascade, mix, or split the effects to experiment even further. 

Pedal functions entirely like it should. If you have any questions please feel free to ask! Included is the original box.