@XODES thanks for the clarification above. I did not arrive at that same understanding by reviewing the info & videos available for PV44, so your added text helps. In particular, I had been left wondering how the panel controls relate to one another and to various possible input / output signals.
Might I suggest you add to your manual / videos:
-- a panel diagram labeling the controls and discussing their normal interactions
-- a few patch examples clearly illustrating a few of the main use cases, the required patching and settings
-- a basic "intro" video showing the 2 points above. The existing videos were too "busy" for me to make out the unit's basic functions.
I believe that added text / video would make the unit pretty clear to most.
I do think if I had PV44 in my rack I would learn it quickly.
Again, thanks for your input above, I'll keep PV44 in mind for the future!