Congrats on the new amp.
As a side note I have also ran listening tests among similar units.
I have a Pioneer SX-1250,980 and 650.
The little 650 gives up nothing at low to moderate volumes with ADS L-810 speakers.
The 1250 does have a better tuner and will push most speakers to scary levels.
But I could live with the 650 as a daily player if I had to.