Mikescotland Thanks Mike. Another user sent me that info -obviously read your post before it was deleted. I was previously seriously considering going back to my trusted Alpine units and foregoing the optical/digital output -really their decision to omit this from all but their uber expensive units is the reason I looked for other options. I've been using their units with optical output since the mid 90's (yes, I'm that old). But the Teyes C4 Pro does sound very promising. Can't see any pricing yet so I'll do further digging.
I actually loved the Dudu when it first arrived and thought that all of the buggy crap was my inexperience with the unit. But as the days have gone by, I've found that my frustrations are growing and many things just don't actually function. I'd be better off using an SMSL Pro to feed my processor.
Our comments will now be deleted because of the mention of a potentially better alternative. I wouldn't even be looking if DuduAuto actually gave a damn...