Is this expected? Connected my Faderfox EC4 (through usb) sending data on ch16, ctl 124 type CCAb (whatever that means) produces this output when monitoring data…
Unfortunately not 
I’ll look into it, but I’d wager it has to do with using CC124, which is a reserved “Channel Mode Message” in the MIDI standard.
Looks like you found a hidden 70’s arcade game inside your Hapax! 
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