I replaced my receiver a month ago with a Denon AVR1802. I have Kef Q35.2's for my fronts. They are rated 91db, 100 watts. The movies are really fun to watch to I am totally satisfied with the sound for movies, and my 2 channel sound has improved as well. Actually, it has improved so well that I started to feel that I have to improve it more Is it possible to achieve any improvement by adding a power amp for 2 channel listening only and use the Denon for center and surrounds, or is this as good as it gets with my current speakers and receiver and CD player, which is Kenwood 200 changer dpfj3030 ? If I will get only a marginal improvement I will wait a bit longer and upgrade my front speakers or my receiver, but if it is possible to get a significant improvement in sound quality by adding an amp around $500, I would go that way. Can you please comment and suggest amps ?