After a long search for a system that is silent, easy to use, and flexible in operation and handling I landed at Sonos at the end. Before that I had been a Olive4hd for 2500 in its sights. But all finished Hifi solutions have a major shortcoming in the operation: I wanted to rummage through my lists and albums, as I've created and not as iTunes or some other system says to want to categorize it. Finally, I am on a soundless (NAS Qnap 119 + a 180GB SSD (I only audio files and as my server is in the living room, I wanted no noise)) come with the Sonos system (S5 + ZP90). The whole thing depends on a Yamaha Receiver with the Canton GLE 490 speakers. Conclusion: after 5 min installation ran the Sonos. And as times a predecessor wrote: conspicuously inconspicuous! Ease high five !!! All my desired functionality I got. It appears at first glance expensive, but unlike other solutions, new spaces can be here very quick and easy to add - and especially without WLAN! Anyway, I'm excited and give so even without a single constraint 5 Stars.