This MIDI Rack uses similar routing than the previously released ProMono ARP, but without the arpeggiator. It can be used to make your favourite hardware or software arpeggiator to behave like the Roland SH-01A arp.:
As long as you play monophonic, no arpeggiator will turn you playing into a staccato. The moment you add a second voice, arpeggiation will start.

Here is an explanation of the controls:

– THRESHOLD sets the maximum number of simultaneously active notes (voices), that will be routed to Output A and channel A. The moment this threshold is exceeded notes will be routed to Output B and channel B.

– MAX. VOICES sets the maximum number of polyphonic voices allowed.

– MODE
A -> always route MIDI to A.
Switch -> switch to B when voice threshold exceeded.
B -> always route MIDI to B.

– OUT A and OUT B
MIDI outputs that can be connected to external hardware. Example: Connect a monophonic synth to A, and a polyphonic or arpeggiated synth to B. With THRESHOLD set to one you can now play monophonic on synth A, and the moment you play more voices, the polysynth / arpeggiator is being used.

– CH. A and CH. B
Similar to the MIDI outputs, but the output goes to the module output and is switched between the two channels. It is important to leave these to channel configurations in “set” mode.