It has buttons arranged in a configuration for entering pitches, plus various other buttons for editing sequences. There are knobs controlling the tuning, frequency cutoff, resonance, envelope amount and decay, plus volume and tempo. There is a DIN sync jack on the back for synchronization with the outside world. You can select either square or sawtooth waveforms. Programming sequences into it is extremely bizarre, and almost impossible to figure out. You enter the pitches first, and then enter the durations in a second pass. You also go back and enter accents and slides later
