Hi all, I just got an incredible deal on 2 RTiA9's, a CsiA6, and 2 RtiA3's. The sub I purchases is the PSW125, though I am disappointing with the cherry finish. The sub might be going back. What I really need help on is a new receiver. I currently have a Sony STR-DH510 and it's terrible with these speakers. I don't know really how to describe how these speakers sounded when first hooked up to the Sony, but it was awful. I was almost getting a ringing of sorts in my ears. Also when the volume was turned up a little, they would distort. I really need help finding a new receiver, one that has pre-outs for eventually getting an amp. What I was looking at is a Pioneer VSX-42 for $250 at my local best buy. The only thing about the Pioneer is that the pre-outs seem to be for zone 2? Not sure what that means. Could someone shed light on this? If this isn't a good receiver, what would you recommend? I have a budget of around $500 for a receiver, new or used, sorry guys I am still young and don't have the money to shell out for a nicer one. Also will these speakers sound way better with a more capable receiver? I really didn't like the ringing in my ears. Any help would greatly be appreciated. I am very new to this, I came from crappy Sony speakers that were a 5.1 set.