The speaker sounds GREAT and beats Sonos HANDS-DOWN in terns of ""value-for-money"" but the mobile app and Windows software that are required for this speaker to be used in a multi-room setting are PURE CRAP!Despite having updated to the latest version, the Android Samsung MultiRoom app periodically hangs, gets disconnected from the hub and/or WiFi router, and inexplicably drops ""grouped"" speakers. I've got 6 of the speakers and the hub, and while the speakers all stay connected with the hub, the app will ""ungroup"" one or more of them randomly and get stuck reconnecting them hanging the app requiring a shut-down regrouping of speakers, etc. VERY unreliable and annoying! You can FORGET about the Windows software it's even WORSE than the Android App. It's old, clunky, and causes my entire laptop to hang! Which is a DAMN SHAME get your act together Samsung! FOCUS!Think TWICE if you're planning on using these speakers in a multi-room setting especially if you;'re not technically inclined and lack patience you might be better off biting the bullet and going the Sonos route!