So the main XLR outputs and the Jack AUX outputs use a different DAC?

That's interesting as I have been using it with the AUX outs so far simply because I had some balanced jack to phono leads spare. Maybe I would get a big improvement if I used the XLR outputs?

I don't understand the advantage us using a different DAC for the aux and main outs as it can only lock onto one input at a time. Whats up with that? Or am I misunderstanding you, it's been a long day!