Sound: I run it as a "stereo amplifier" with 2 large floor-standing speakers (4 ohms). The acoustic matching like without being obtrusive spatial inadequacies of. Compared to my "old" a real asset. Question from my wife 30 seconds after the first Klände are heard: "The new sounding better - right?" What more do you want !!! Operation: OK - Guide is initially only sometimes required for the basic settings. Key Labelling on device seeeeehhhhr difficult to read. Menu in TV: is OK and intuitive. Control via app (iOS or Android): sometimes hakelig, jumps in the "NET" for no apparent reason suddenly back to the previous menu item. Here Onkyo should rectify again. DLNA: Now usable !!! With the update from 01/29/2015 (version 2020-9110-2001-0502-0203) it is to use. Before, it was extremely slow and sometimes titles were skipped because timeouts expired absolutely useless. I use as a server and a controller Synology DiskStation. This combination works (useful, but not as smooth as eg my Asus O Play since og update. Benefits of dnna server via the Onkyo Remote App is not very comfortable. About DS audio or apps like "Media House goes better.
Addition: 1 point deduction! The theme DLNA is a tragedy .... After switching brings the 636 again. In a state in which it is not to be controlled by an external DLNA renderer If you then zap through the remote control app between 2 web radio back and forth, then sometimes hear the music from a DLNA server. The Net-function "DLNA" select (one could believe that it works so) has in the Zusammenhank no effect. So DLNA but useless. Here Onkyo has significantly rework (many others and what one reads in such a way). A good AVR is not only a good amplifier, but also at least a functioning media player.