I currently have the following setup... Sony STR-DA4ES Klipsch KG 4.5's for Front Klipsch RC-7 Klipsch RS-7's for Rear Boston Sub Polk Rear Centers The room is 750 Sq Feet. I have been thinking about purchasing a new reciever or Pre+Amps to drive the 7.1 system in an effort to bring out a more rich and powerful sound. Here are my questions... What is the advantage of getting separates? Is it purely the amps because most Pre-amps don't have the functionality that many recievers have? For example on my reciever I can set the eq for each zone of speakers, and adjust the level of each individual speaker.