I have a Monster Surge Protector (Powercenter AV 800G),and one of my Sonos Amps which is connected to the surge protector won't power on (no lights on in front and not recognized in Sonos apps) unless my receiver (Marantz NR1603) is on (receiver is also using the powerstrip). The moment I turn my receiver on the lights on the Sonos go on and it is recognized in the sonos apps. I also have a XBOX connected to the powerstrip and it does not have the same issue. I have another sonos amp that is connected directly to the wall outlet and it works fine, as does this sonos amp if I connect it to the wall outlet. But with only two wall outlets and one used by the powerstrip, and the other one sonos amp - one would have to be on the powerstrip. Any ideas on whats going on?