Hi there everyone,
That would be a silly question, but ! I want to use OPZ as a midi sequencer to Ableton/VCV Rack and, it works “well”. BUT, my opz still sounds by it’s little amp, and I don’t want it sounds !
(I’ve just connected my opz with the usb cable to my computer)
Is there any way of turning off audio-out on OPZ ?
Thanks ! 
Personally I just keep the volume knob at minimum, you could also mute all tracks on the mixer page.
If you press shift while in the mixer and press the tracks you want to mute, it will only mute the audio and continue to allow OP-Z to send the MIDI information on those tracks.
Yes ! Dunno why I didn’t think about these solutions haha Thanks ! ^^