S-Engine USB MIDI Sound Module E-MU 8030-based sound-engine with 128-voice polyphony9 drum sets and one SFX setDrum machine/metronome with 100 drum patternsblue LED display HI-Z guitar-input TRS jack 6,3mmPLAY/STOP button SOUND/DRUM MODUS button10 function buttons for PRESET, VOLUME, TEMPO, REVERB type and REVERB depth MIDI I/OUSB MIDI I/OLINE OUT TRS jack 6,3 mmHeadphone output TRS jack 3,5mm