DigitalLife Merge-5 | 5-Pin MIDI Interface Merge Box - 5 In 2 Out
Small standalone MIDI merger & splitter - Equipment - lines
DOREMiDi New Upgrade MIDI Merger 5 MIDI Input 2 MIDI Output Support USB Power MERGE-5 Box Converter Adapter Controller _ - AliExpress Mobile
MIDI MERGER / SPLITTER 2in->10out Thru PCB or Kit from Deftaudio on Tindie
Amazon.com: Mellbree MIDI Cable, 2-Pack 1-Feet Male to Male 5-Pin MIDI Cable Compatible with MIDI Keyboard, Keyboard Synth, Rack Synth, Sampler, External Sound Card, Sound Source and Other Music Gear : Musical