12 Step is a chromatic foot controller pedal for Mac. It sends MIDI notes via USB or the KMI MIDI Expander to control soft synths, MIDI Keyboards and MIDI sound modules. It has
polyphonic capabilities and can play up to 5 notes per key. Each key is velocity and pressure sensitive and can use the tilt of your foot to control pitch bend, polyphonic aftertouch, or any MIDI CC value.