I don't want to add the complexity of bi-amping. Keeping it simple is the way to go. I had bi-amped in the past. I have the acoustic Zen Satori bi-wire and ICs. The SCD1 is wonderful sounding on redbook. SACD's are even better and is the icing on the cake. I previously had the ARC CD-2 and like the Sony better in every way.
Can you biamp the speakers with the SETs running the tweeters and the evo running the rest? Also what are you cables? Lastly what is your oppion of the sony on redbook? Thanks