A:AnswerWe set up our Sonos Connect Amp with no issues connecting to our ceiling speakers (Zone 1 - living room, Zone 2 - kitchen and Zone 3 - patio). Perhaps your wifi was acting up.
A:AnswerThe volume control is in the app. You can control each speaker as well as bass and treble via the app. Remember even if you have an older unit both firmware and software can be updated via the app/internet.
A:AnswerDepends what you mean by "sonos system". The only time you need the connect amp is if you only have speakers and you need to power them. If what you have is the standard Sonos Connect, then you'll need to plug that into some type of stereo receiver or amplifier...not a Connect Amp. The connect amp is the Sonos Connect plus an amplifier built into one unit.
A:AnswerIt has international power cable IEC C7 and will accept 220V. Be sure to set the voltage selector switch.
And yes WiFi, it's 11 channel only, not 13. I use wired network with these as I avoid using wireless unless it is absolutely necessary.
A:AnswerThis product will only power a max load of 4ohms per channel. Depending on the number of speakers per room and the ohm rating of each speaker you will need at least one per room if you want to play different music in each.