Anticipation of the same: This device can do much more than I actually need. Previously I had a Denon X1000, who went back after one year because Spotify has stopped working (do not ask me how that happened, suddenly went no Verbinung to Spotify more. No error message and loud Spotify Support came in this nothing to , not even when I deliberately entered the wrong password). In any case, the recommendation of Denon device was back and Amazon has also taken it back easily. Now the question was, which AVR to succeed. I wanted to stay because of Audyssey Einmesssystems at Denon. But I wanted to upgrade to XT32 and there are only from 4100. In addition, I wanted to be the pre-amplifier for my Thorens going on, and a phono input is also available only from 4100. For a while I've flirted with a used 4000, but as a zealous Spotify listeners was me, the integrated client simply too spartan and I promised myself from Spotify Connect simply more comfortable. So, Saturday and Monday ordered the unit was there. As already described several times, the processing is great and the detailed solutions tip. X1000 mined, connect X4100. The linear arrangement of the LS screw, so that you can push the cable from the top of the clamp is ever great. Switched device and start configuration. I have two nuLine 84 floorstanding speakers, a nuLine WS14 as a center, two WS14 as rear and a nuBox 441 as a sub. Next clever detail solutions is the included tripod, with which one can easily move at ear level and slightly on the sofa at the Einmesspunkten the Einmessmikro. After the subsequent LAN device I thought "everything was great". Quickly my favorite station SWR 3 is set to position 1 and then the first attempt with Spotify ... and then it started :-(. Neither the Spotify client on my PC still on my Nexus 7 the X4100 was displayed. Everything tasted again, tried the AVR via app (goes) and Client (goes) to drive. . No Spotify Connect :-( research on the internet -> ah ha, there are those with the same problem Tried to WLAN switch -..> No success try to work with a static IP -> no success Fixed IP with LAN cables. -> Suddenly the receiver was, and Spotify Connect works. until here I would have awarded four stars. But then came the great disillusionment: One week it went perfectly with the receiver. No matter from where I have driven him no problems. It's just nice to browse through the Spotify client to seek a recommendation and then get the right to the receiver. But this weekend plunged at once all network functions from (Funnily enough, except for Internet radio). The AVR was no longer on the app to control the web interface, and certainly not more than Spotify Connect. The first time even helped make a 15 sec at power. One day later, the problem again. This time I had to configure the network settings from scratch. The cost at least another star. As I said, the Internet can find a lot about the problem, but so far no solution. Too bad, I'll try to document the development. Second star deduction way, there is for some oddities: - I offered 3D update that is chargeable a Auro. Unfortunately, I can only fully give up automatic updates if I do not want to see again and again the :-(. - While Internet radio is playing, the OSD on the TV nciht operated, and the display shuts off. Very strange. - During calibration also XT32 has my calibrated too low (compared to the Fronts of course quite underpowered) Center. I had him get the X1000 Raise by 2-3 DB to reasonable speech intelligibility as well already. One missing in the Rezesion remember how he actually sounds? Now I am convinced amplifier the "sound" should give back ... I always "Pure Direct" is set for music and expect that the amplifier then only does what he is supposed to do: increase the input signal to loudspeaker Usable values otherwise nix. He gets down well. Audyssey is turned on for films, also sounding well.