Overall I am more than pleased with my selection in pre/pro's. The B&K 50 appears to be a perfect match for my speakers. I got it yesterday and wired it for sound. I have yet to run my video components through it or properly calibrate my speakers with avia. I just did it by ear for now using the same levels I was with my receiver as a pre/pro. Yes, there is a night and day difference from my receiver to B&K. I was very skeptical about how much of a difference if any I would get with movies and games. I didn't have to play more than a couple scenes from my DTS demo disk and a few music CD's. My only gripe is the remote control for the B&K. The SR10.1 is a bitch to set up the way I want it. I got some of the marco's I want in but there are some things I want to try and do that I don't see any options for. I'm sure it's more a matter of my getting use to using the suite software than the limitations of the info they supply. It would have been a huge help if they included an instructional video with it... I'm lazy when it comes to reading. I am mostly winging it with trial and error and the use of a config Terry sent me as a reference guide. Back to work. This unit is awesome! My family and friends that got to hear it so far are blown away with the difference in sound this unit adds.