Before I begin, I must get this out of the way first: The "Denon 2016 AVR Remote" app is very unstable at the time of this writing. You will find this very frustrating while you're trying to set up your receiver. Thus, I would advise using only the onscreen menu, or the webpage interface via a browser on your phone or computer during setup. The app also doesn't allow changing of a few settings too. Use the app after completing setup, use it for selecting source, tuning, and making sound/video mode changes, etc. It seems to get a little crashy when you're going back and forth and in/out of all the menus and using the setup pages too.
Note: If it crashes, YOU MUST go into your Android's Setup Application menu and "FORCE STOP" the "Denon 2016 AVR Remote" app before restarting it or your problems will only get worse (it will hang and crash your phone, causing it to reboot suddenly and unexpectedly .. so save any unsaved work before you begin). Do not clear storage or data, just force stop the app and then restart the app.
BTW, I'm not going to comment much about the sound and quality thereof, as that's pretty subjective and has a lot to do with the listening environment too. This sounds fantastic in my 20' x 20' room, but if your room is 4 times the square feet, you will want a little bigger amp and more speakers and bigger speakers. If you're building a really serious home theater, you'll want an 11.2 or whatever system for some ceiling and more surround speakers too.
This AVR was a delight to set up (except for the app). Easy and intuitive, with helpful onscreen graphical illustrations. The user interface seems logically laid out and structured, as well as the remote (although I will seldom use the remote .. all the necessary apps for everything are on my phone). The AVR's onscreen, app, and webpage user interfaces are all similarly structured, making all 3 intuitive to use.
Denon also publishes the web interface information so you can conceivably write your own app and/or html/cgi interface to control it if you're a nerd like me. Once setup and configured, you could rack mount this AVR in a closet and not need to touch it ever again.
This networked AVR allows for a pretty robust multimedia center setup. My system consists of the AVR-X2300W with an Epson Home Cinema 1440 projector connected to the primary HDMI out, and a Sumsung 24" 4K video monitor connected to the second HDMI out (which allows for viewing when I don't want to turn on the projector just for music). The following ELAC Debut speakers are attached to fill it out (7 speaker channels and 1 woofer): 1 pair of B5 speakers, 1 pair of B4 speakers, 1 C5 center speaker, 1 S10 subwoofer, 1 pair of A4 Dolby Atmos speakers. They match well.
Attached to the AVR is an Intel NUC (NUC5i7RYH), a Panasonic Blu-ray (plays all of my ripped MKV files perfectly), a DUNE (international) Blu-ray player, a ROKU Ultra, an XBox ONE, a Chromecast, and an Amazon Echo Dot (commanded to attach via Bluetooth only when listening to music through the AVR .. because you'll still want to use the Echo Dot's built-in speaker when the AVR is off).
All of this works so beautifully together and sounds great in a 20' x 20' room, even with wood flooring. The AVR-W2300X (along with a powered subwoofer) is more than enough wattage for a room of this size with these closely matched speakers. I've limited the volume at 70%, as that's the loudest I think I'd ever need or want. Of course, bigger was tempting, but I had to admit that I would have never used more power and I would have been wasting money on a more powerful setup. I have very seldom set the volume above 50% so far, even when listening to loud music. A loud party would probably require 60-70%. I think my ears would distort above 70%, lol. And I didn't want to spend so much that I couldn't afford or justify an upgrade in 3 years.
One really nice feature of this system was the ability to change crossover and output level values on all your output channels. I found this a real plus when set the speakers up and trying to get a clean sound in a room with very little sound absorption (i.e. the floors are wood, the minimal furniture is leather and wood, no cloth curtains - just wood blinds on 2 windows, etc.). Fine tuning those values to match the speakers and what I wanted to hear from each made a BIG improvement in clarity. It actually took longer to properly place each speaker than setting up the receiver. Room acoustics and the placement of each speaker is probably the most challenging aspect in all of this.
The unit needs an optical out for wireless surround headset compatability. Zone2 should be optical. Right now though I use Zone2 pre-amp out connected to a wireless stereo headset transmitter (for a hearing impaired friend --- she needs more clarity on the vocals/dialog and the headset provides its own setting to accommodate that). And BTW, you can set a bypass for a particular HDMI input so that you can feed your second monitor unenhanced audio/video straight from the input source.
The app doesn't appear to want to operate over a VPN connection. I think it's just dumb and doesn't try to connect if the WiFi is off. What it should do is simply check for a valid LAN address range (192.168.1.##, 10.20.30.##, etc.). Please fix this Denon, it should be simple. There should be no logical reason why the app shouldn't operate over the cellular network through a VPN connection between my phone and Cisco router with builtin VPN. The webserver interface works via a VPN connection, so the app is not that critical, but it's probably 6 lines of code to fix this, okay, so please fix. There are times I will want to turn on some lite classical mucis for my cats when I'm away for the day, lol. They actually enjoy listening. The web html interface is clumsy with media server use.
The unit has a media player and can play your music files stored on USB memory sticks as well as NAS such as those from Synology (which I use for all my network audio/video storage). But if you are intending to attach a ROKU or similar smart device to your AVR, you're going to want to play your music from that instead, as you'll find those devices and their media server playing apps more robust (they will play music AND video AND photos).
You can access countless Internet Station streams from the AVR, and assign them to Quick Select buttons, which is nice and not something you'll find these days on media players that want to sell you a song or movie. Denon didn't try to sell me anything through this entire setup process, lol, nice.
When I bring up the list of Favorites, only one page of saved favs displays. It didn't allow me to scroll up and down the list to view and select other saved favs until I, for example, switch to a different app and then switched back to AVR Remote. Favs also sometimes display Item## (i.e. Item29) instead of what was assigned.
Some of the labeling seems confusing too. Sometimes it says Internet Listening and other times Online Music.
The input channel name changes does not seem to be working consistent either. I renamed AUX1 to ROKU, yet I keep seeing AUX1 shown in the app, on the web pages, and on the player display.
I connect the Echo Dot by simply plugging it into my power strip and pairing it with the AVR via Bluetooth. In this way, I don't need to have the AVR on to use Echo and when I want to listen to music I just command Echo to connect the Bluetooth to the AVR. So simple.
Quick Select buttons in the app and on the AVR can be configured to switch to any input source (HDMI, Internet radio, media player, etc), along with your listening preferences (volume, sound mode, etc.) at the time you save to a Quick Select button. It will also recall the station you were listening to on the AVR (Internet, FM radio, etc.).
You need to be careful where you make any audio/video adjustments for each of your connected sources so not to affect everything on the same source or every source. I.E. everything looks fine and the same on my projector and video monitor for me, but the grandkids like the color punched up to vivid on the cartoons they watch through ROKU, and that's where two (2) Quick Select recall buttons come in handy: "ROKU" and "ROKU VIVID". They both do the same thing except one punches the colors and contrast up to make cartoons look more vibrant.
I really like this AVR. It seems solid. I've never had it hang, never had to power cycle it to get it to work. The app is the only weak point in all of this, but it's not a show stopper by any means. It still works, it just gave me a lot of trouble when I was using it a lot during setup and testing. The web page interface does the same things as the app, but it's a little clumsy in certain aspects.
I would highly recommend downloading the user manual and familiarize yourself with this AVR before deciding if a networked AVR is right for you. You'll want a smart phone or tablet to use this device. You can use the IR remote and onscreen prompts, but that will get old if you are connecting to sources with apps (i.e. ROKU). You're not going to want to keep switching between your phone to use the apps and the remote to command the AVR. You're find it more convenient to just use your phone to control it all. And your phone is usually always with you, and you can use that from any room .. and from across the planet.
BTW, I picked the ELAC speakers because they sound great, they matched power-wise, they were the right physical size (I didn't want those tall floor standing speakers, I'll use my own speaker stands), and they are Kevlar. I hope they last, I think they will outlive the AVR.
And lastly, I haven't used the Audyssey setup yet. There was no point running it yet, as I've not yet purchased some speaker stands. I'll be looking at a bunch of options this weekend. Once that's done, then I'll see how close Audyssey has matched my manual setup. I can't imagine it could improve upon it, as I think I did a good job making it sound as good as its going to get. We'll see though, huh? LOL.
I am glad I did my research and homework. If I had picked another vendor product before I saw this, I would have been disappointed with myself. This is a very robust and flexible networked AVR that works with everything I've attached so far.
Very satisfied .. except with the Android app .. but I have to assume they intend to fix it, as it's used on all of their networked AVR receivers and I assume they want to remain in business. But again, it's not a show stopper, there's still 2 other interfaces to access everything (web page, remote/onscreen). This AVR deserves a 5 star but should get a 4 star because of the disappointing app but I'll rip the app for that.