To Stbhorn, just to let you know about the receiver-preamp combo (in your case receiver-integrated) thing. On the cheap I did that for a year while saving up for a power amp 5 channel. Probably the only guy in the USA that ran an Audible Illusions 3 tube preamp into a Pioneer av receiver. You would be greatly surprised how good that receiver sounded when it was released from preamp duties and only had to pass power.
I have a 2 channel set up. What is the best way
I have a REGA Mira 2000 integrated amp and what to get into surround sound. I am running B&W 602 as my main speakers. I have a center channel speaker and surrounds. Could I purchase a A/V received and hook it up with my integrated amp? In other words, would it work if my integrated amp ran the main speakers and a A/V reciever ran the center/surround speakers? I want to leave my main speakers hooked up to my integrated amp. What are some other possibilities?