@ADTG, separates are the way to go when trying to achieve better sound quality. Some in this hobby can not afford a totally separate system, each with it's dedicated function and purpose. A processor, surround sound only no doubt is the way to go if that's your thing HD Dolby Surround formats. Adding a 'two channel pre-amp say like a Parasound,Krell..ect, to a existing AVR, to achieve better sound quality for 2-channel serious listening. Most Pre-Amps in most AVR,s are Not design to give you excellent sound quality for 2-channel serious listening. Especially mid-level to bottom feeder unit AVR's. Any serious enthusiast
with this hobby probably knows that already. What you do get in flagship 'AVR'..is a 'mix' of everything with the latest surround sound formats. But you won't get high quality parts, and lets not forget the engineer's 'signature' on a separates. Bob Carver, John Curl, ect. that design specific circuitry from manufacturers. Hence that leave their 'signature' on it. Macintosh, Pass Lab, and other high-end audio/video gear maker's have some of the best engineers and those dudes don't come cheap. So with that said, the AVR thing is what it is. Some other manufacturers of AVR, units just have very poor quality control departments. That's the trade off when you have your gear manufactured in China.
Just ask anyone with Onkyo,
Emotiva,
and others
who experience poor quality control.