Fully configurable MIDI router. Very solid build. In addition to mangling MIDI signals, you can also use it to generate them.

I got the Midihub because the Digitone and the Digitakt doesn't support echoing back MIDI CC messages and this prevents using a keyboard synthesizer as a controller while also sequencing the keyboard itself.

With this I was able to set up a routing where CC messages are routed back to my Nord Lead A1 (local mode off) but the note on/off messages, pitch bend and mod wheel go to the Digitone.

Now by playing the keyboard, I can engage the four Digitone tracks or the keyboard itself, depending on which track is selected on the Digitone.

The same principle goes for a Digitakt and a Nord Drum 3P.

The editor works nicely on Linux.

The only downside of this unit is that it only has 4 in/out ports that quickly fill up.