Summary: I have some doubts about the efficacy of writing a review for a product that is discontinued and there are only a handful left in stock. If anyone is on the fence about whether to buy this or wait for another deal -- go for it.
Summary: I liked everything about this receiver. I just could not use it on my 4 ohm speakers. You have to step up to the $2,500 AVR-4520CI if you have decent speakers. Everything else worked as advertised. The internet radio to the Audyssey to the video upscale.
Flexible and Complex - Not Enough Internet Radio Favorites
30 April 2014
Summary: I have had the Denon for two months and I am reasonably happy with it. It is extremely flexible with its 3 zones, including independent HDMI zones in 1 & 2. If you value the three zones, the Audyssey X32, HD Radio, and 7 channels of amps, it is great.
Summary: I was upgrading from a 6+ year old Denon AVR-3803 that lacked HDMI. I purchased more than I need as my new apartment has a deck so at some point I hope to use the mutli zone features to play audio and video up there. The audessy features are great.
Summary: First I have to say I like Denon products and this is my second Denon receiver. Sounds and works great. My problem is that it will only allow you to play 9.2 surround sound. I thought it could do 11.2, so I bought 11 speakers.
Better audio than I thought. Great features as I expected. Not finicky.
8 December 2013
Summary: I was using an Emotiva UMC-200 with an XPA-5 external amp to drive a 5.2 channel setup with Ascend Acoustic 340s across the front with HTM-200s in the rear. My UMC-200 had a hardware failure and I bought the X4000 to stand in for the UMC while it was getting repaired. The X4000 is absolutely great.
Summary: Upgraded from Denon AVR-3808 to AVR-X4000 and no regrets. XT32 , SubEQ, LFC are worthy upgrades. Controlling AVR from iPad/iphone is very simple and no need to have the TV switched on to see what AVR is playing (like Pandora/Internet radio/USB etc).
Summary: Just getting my new AVR 4000 set up and I'm liking my purchase! Coming from a NAD T773 receiver, this unit has some pretty big shoes to fill, but thus far I haven't been terribly disappointed.
Summary: Does everything I need it to do very nicely. Connectors are well laid out, the web based configuration made setup a cinch, the network apps (e.g. Pandora, AirPlay, and Spotify) are very usable, and it looks and sounds great. Only complaint is unreliable free iPhone/iPad application.