This is a question for my friend who recently bought a pair of Paradigm studio 20s and a Denon 1804 receiver. He was thinking of upgrading to a Yamaha 1400 because he's concerned about power output of the Denon with the paradigms. He's also thinking of buying the CC470 to go with his mains and has even more concerns about his 1804 being able to drive that monster as well. The 1804 is 90W per and the 1400 is 110W. He's still within the 14 day return on the Denon, so upgrading will only cost him about $150... What does everyone think?