Maybe someone else with a Denon 3803 could weigh in on this matter. Like Tinfoilhat said, there seems to be no way to turn off the receiver tones. The only way to get to the speaker level adjustment menu is to play the receiver tones in auto or manual mode. Turning them off or using an external source is not a selectable option. As I do my tweaking I suppose I can do a pass through the Avia menu for verification purposes and for the phasing. I've already done some video setup adjustments with the Avia. I don't see that as a super powerful tool since I wasn't that out of whack with my untrained eye settings.