MRCC 880 MIDI Router and USB MIDI Interface Essential Features for Home Studio and Live Performance The NDLR A Multi-part, Polyphonic, Interval Sequencer MIDI Groove Box MRCC – MIDI Router Control Center The Center of your MIDI Studio USB MIDI Interface, Filtering, Transforms – No PC Required MRCC XpandR 4×1 A MIDI Din Expander for MRCC – MIDI Router Control Center A Four Input, One Output USB MIDI Interface and Standalone MIDI Merger