I was in Tweeter today listening to a pair of Vienna Mozarts. I have a question......I currently have a Denon 1803 80x6 receiver. So I was listening to them on that, they sounded amazing. I want to upgrade and some point so i put on the Denon 3803 at 110x7. The mids sounded flat and there was no bass at all, where as the 1803 definitely put out some boom. Overall sounded terrible. Why would the $1200 receiver sound terrible compared to the $500? Same track, treble and bass setting both at 0.

Thanks