Mixers & Multi Track Recorders
MIDI Solutions Quadra Merge V2
MIDI Solutions Quadra Merge V2, Midi Merge Box, 4 MIDI inputs, 2 MIDI outputs, It is powered by the MIDI cable, Compatible with 3.3 V and 5 V MIDI standard
https://www.bizrate.co.uk/mixers_multitrackrecorders/midi-solutions-quadra-merge-v2-oid7004047458.html