Erica Synths’ midi through box is a professional quality, no latency, one MIDI In to 8 MIDI Through splitter, in rigid aluminum case.
The midi through box lets you connect up to 8 instruments to your sequencer or master keyboard and control them simultaneously, without undesired delays and interference.
Here’s the official video demo:
The Erica Synths midi through box is priced at 100EUR. See the Erica Synths site for details.