Summary: This amplifier has problems that were not immediately obvious and this was made worse by Denons total inability to write a comprehensible manual. It is hard to believe that a company as respected as Denon could such a confusing product/instruction manual. Avoid this unit unless you are fully aware of how to set them up and test them, or take the insurance.
Summary: I upgraded to the Denon 2809 from the Denon 2309 because it offers preouts to add an additional amplifier. The 2309 would suffice as an excellent Home Theater Audio Component Receiver if ones not concerned with adding more power, speakers, etc.. The Audassey MultiEQ offered on Denon's new A/V receivers is a nice setup feature. The setup itself and remote take some patience to adapt to.
Summary: The Denon AVR-2809-CI is a feature full model and has plenty of power for most typical home theater and 2 channel music listening. The model provides solid HDMI switching while upscaling is best disabled and left to the display, source device or external scaler. The Denon manages to stay cool even at reference listening levels for extended periods I have a HTPC connected via HDMI as my primary source. I can report that multi-channel LPCM over HDMI is working perfectly.
Pros: Accurate Controls, Clean Sound, Durable, Easy To Set Up, Good Power