FWIW, I am running the same speakers (2 x 22's, 2 x QS8's, 1 x 150, with a PB12-NSD) with a Denon 2310 (same as 890) and it is great. No issues whatsoever with power. That is a crazy deal BTW, I paid $740 for my 2310 and I thought that was a deal, another $100 off is next to insanity.