Scuffs and wear spots to the body, light scuffs on the keys, one rubber knob keeps falling off. Tested with 4 C batteries (not included) and unit powers on. Battery compartment is clean, no power supply. Everything seems to be functioning but there is an error code 037 on P1 Choose CTRL screen (firmware update,midi or possibly needs recalibrated). Has not been tested with other equipmemt , expect it to be in working condition but cannot confirm. Selling as is.