I have not yet experienced no wi-fi speaker system, which has a so good sound. I have previously tested the Leitz Bluetooth stereo speakers which for me already had a very good sound. Against the sound of the Bose Sound Touch 20 he sounds like a tin can. The initial setup is very simple, you need the free app (with me which for iOS). The decor is simple with the app; it requires a well described - short - operation more than on comparable devices. The connectivity is great, I had misfires unlike other reviewers, despite not very frequent use. Very good: I stöpsele the device to save power from regular complete. After grazing poke the plug all settings are retained, I have already experienced differently with other devices. A really nice feature is that you can control the Internet radio and its Deezer and Spotifybibliotheken about the device, but that is hakelig especially in Spotify and iTunes library extr em. One should here really do control over its apps and stream the sound simply via AirPlay on the Sound Touch. . Together with nuisance No. 2 we come here to the total of a downgrade to ever access the iTunes library can, you need absolutely the Bose-app for the Mac or the PC, one managed by the iTunes. The App Store for Mac, for I wanted to set the machine also, you will find the program does not, you have to be downloaded at Bose himself. That would not even be so bad if that would be reasonably explained in the iOS app. I have two frustrating evenings fiddled until I had managed the integration, only to find that I will not use the feature eventually. Perhaps I was also only stupid, but I think that in an otherwise perfect device (to a proud price) disappointing: What I want to spend more than the SoundTouch 20, I stream via AirPlay prefer. This is sound and easy to use as standard a pleasure and justifies 5 points. For those who prefer the Bose-own solutions, is it safe to have a reason, but suffers comfort deficiencies, justifying a thick point deduction. No device for all so, unfortunately.