I'm thinking of getting a power amp, or maybe just an integrated amp (like the NAD C-series, which allows you to turn it into a power amp) to replace my Yamaha Amp. I use my system mostly for music, and while I think that the Yamaha is a superb performer, it makes perfect sense to get something more suitable for music. What I am thinking of doing, is getting a nice power amp or a NAD C350 or C370 and running (very expensive) cables from the pre-outs on the back of the DSP-AX620 to the inputs on the power amp. This would allow me to keep all the AV inputs and outputs (which have been a god-send) but have the power and sound quality of a stereo amp. Will using the Yammy as the pre-amp degrade sound quality, or will it just bypass the signal straight to the power amp, giving me the sound quality of the power amp? Looking to spend quite a bit on a nice amp, as I am going to be upgrading to Quad 11Ls and a Velodyne CHT-15 when I get a job. Thanks for any help and comments. Also, any recommendations on decent power or intergrated amplifiers?