The Hammond XPK-100 Proline pedal board is designed to plug into the XK-1, XK-2, and XK-3 keyboards via the MIDI connector. In addition, it can be used with the XM-1 Drawbar module or any keyboard with a MIDI input and the ability to provide bass accompaniment. This pedal board can enhance your playing with bass lines provided by your foot, leaving your hands free to play melody and accompaniment. And, when used in conjunction with Hammond's XK-3 and XK-3c Drawbar Keyboards, the XPK-100 allows you to create a full blown Hammond Organ.