Hi, I have quite a considerable Sonos system and have just added an Arc to a TV in a new room. 

I am loving the Arc but want to use two in-ceiling mounted speakers as the rear speakers. These are currently connected to a 1st gen Amp so I cannot access these as rear speakers as the old Amp only appears in the S1 app and not the S2, where the Arc currently sits alone.

So, I want to upgrade the old Amp to the latest model so I can add this to S2 and then hopefully connect these as the rear speaker pair.

Before I spend the money, just making sure that this setup will work. Both the Arc and the Amp are connected over Wifi although both could be connected to my LAN over Etherent if need be as they are both in proximity of a switch.

Thanks in advance for any help.

Regards,