I just swtched to multi-channel. Sold my old Audio Research LS3 pre-amp and Adcom 555 amp and got a Marantz SR6003 AV receiver. Was considering the Cambridge Audio 640R but its a little dated now, though the SQ is one of the best for AV receivers. Liking the Marantz, clean and powerful enough, all the current surround decoding options and the auto speaker set-up is nice. Using KEF 104.2 for mains, C6 for center and C25s for rears. PS3 for dvd/blu-ray and a Micromega Leader for cd, all plugged into Adcom ACE-515 power conditioner. Sony 50" Wega rear-projection LCD for display.