Behringer BCR2000 B-Control Rotary - total recall USB/MIDI controller with 32 illuminated knobs, 4x virtual groups with 8x dual mode encoders, 16+4 illuminated knobs with assignable MIDI functions, learn mode, 2x foot switch connectors, 32x user presets, 1x MIDI input and 2x MIDI outputs, LED display, MIDI input with merge function. Compatible with WINDOWS XP and MAC OSX.