Sixty Four Pixels - Banana Split - 6 Way Midi Splitter/Thru Box – MeMe Antenna
Amazon.com: MIDI Splitter Cable, MIDI 5 Pin DIN Plug Male to 2 DIN Female SmartPhone AUX Headphone Stereo Jack Adapter Y Input Cable for MIDI keyboard, electric piano, synthesizer, MIDI guitar :
Midi split cable or midi splitter box? : r/synthesizers
Not Your Ordinary MIDI Merger Or Splitter
MeeBlip releases the cubit go MIDI interface and splitter / thru box - gearnews.com