I've had Onkyo AMP for a couple of years and I decided to upgrade my 2012 Onkyo TX-NR818 to a new 2014 TX-NR838 last week.
If people have used Onkyo's in the past they will find it the same mostly as the others.
There are lots of other features such as renaming inputs/output, using HDMI Control/ARC etc and most people will want to turn those on as well.
Atmos is a new Dolby system which quite a few manufacturers as going with which allows more of 3D sound engineering system with sound above you thus things sound better but we'll have to see when bluray's with Atmos Dolby sound comes and then I might be impressed.
The set up of the 838 was just as easy as the 818 but remember to remove the little black stoppers in the posts so the banana plugs fit in (why do they put them in in the first place? Make sure all the speakers are plugged in and it will find all the speakers itself with the automated set up and your away).
16/06/2011 - Problems with Formatting xml on geekzone..12/06/2011 - Removed TSIG stuff as it makes no real difference as TSIG authenticates transfers not encrypt them (my mistake).
As known master/slave ip addresses its not needed.12/06/2011 - Comment about new Patch for Slaves.As the domain space is going to be signed soon in the next 6 months I have decided to try and implement DNSSEC on a number of name servers.The Wifi I don't use at all but the Bluetooth is a great feature as I don't have to play music (via airplay from my i Phone) to my Apple TV which is plugged into the AMP and now can play directly to the AMP.At the moment the 838 at the moment doesn't have Atmos but they have promised support soon via Firmware upgrade.Vaughan (The owner) and Steve where great to talk to and I got some new Main Front Speakers as well (Onkyo D509's) and moved my KEF T305's around to get 7.1.I'll probably go back to 5.1 and get my 2+3 zones plugged in when I get time and bi-amp the Main Front Speakers to make it sound better.