One reason I stopped buying Onkyo AVRs is that they don’t have a good room correction system like e.g. Audyssey or Dirac. Edit: Apparently Onkyo caught up at some point, but at the time I switched away from them they were lagging behind regarding room correction.
Onkyo has had Audyssey for quite som time and current models have Dirac.
Ah, I missed that, haven’t kept up to date in recent years.