Originally Posted by jdsmoothie
The X4000 will likely meet your needs power wise. The 4520CI is the flagship model mfr'd in Japan with better quality components and 32 bit DACs and 4 Zone capability able to power 4-ohm speakers to reference volume levels without additional amplification.
I get better dynamic range using a Carver m1.0t (200 wpc) for my front left and right channels than I do with the x4000--and this is in stereo (not MCH) with reasonably efficient 8 ohm speakers (and a sub) playing at around -20 dB in a small, well-damped room. The Carver is perhaps a little bright in my system, but Audyssey completely tames that.
AT&T U-Verse Northeast Ohio
Denon x4000, Carver m1.0t, Samsung LED TV, B&W 704 mains, two M&K subwoofers, Oppo 103, Roku 2, etc.
Headphone system: Sennheiser HD600, AKG K702, Hifiman HE-400i, Marantz HD-DAC1 (also used for music playback in the main system, Marantz CD5004, Denon DVD-3910