The EFX MKIV Audio Controller is the ultimate floor-based switching system. It is a compact, easy to use, has 10 fully programmable loops, 4 function switches and a MIDI foot controller. The EFX MKIV Audio Controller has 250 memory locations, configured as 50 banks of 5 presets, plus a global preset. It can transmit 6 MIDI Program Change messages on 6 MIDI channels and 28 MIDI Control Change messages on an appointed MIDI channel. Also one continuous controller port(XPDL) is included and can be programmed with a designated MIDI channel and controller number