I went to a high-end audio/video store today to look at seperates and educate myself in the process. I listened to several seperates from Rotel, B/K, etc and I was amazed at the difference in sound quality. I was talking to the Sales Rep about my plans to add a good amp to my Denon AVR 3300 and go seperates that way. He told me that I would a big difference in adding a good amp, but I would hear a tremedous difference when I would switch from my Denon to a seperate preamp... Is this true or is this guy pulling my leg????