SoftStep 2 USB MIDI Foot Controller USB powered, Mac OS, Windows, iOS Compatible with any DAW, music software or 5-pin MIDI hardware*(KMI MIDI Expander sold separately) Constructed from rugged elastomeric and graphite composites with a carbon fiber backing. It's beer proof! 10 pressure and directionally sensitive pads are fully customizable Send up to 6 messages per key - Note, CC, Pitch Bend, Program Change, MMC, or OSC