MIDI Foot Controller Works With The MFC10 is suitable for use with products such as the G50 Guitar MIDI Converter and the WX11 Wind MIDI controller. 100 Control Changes and 128 Program Changes Up to 12,800 program changes if 100 bank select messages are used. Connections and Jacks The MFC10 features a WX-in jack for connection to a WX11, and a built-in expression pedal. Four external assignable SW/Exp Pedal connectors are also provided.