sonos + turntable + tv

[MuffDaddy]

I am about to extend out Sonos set up. I am more than happy with Sonos but want to use a Connect Amp and my existing speakers in the living area. I intend to add a turntable and also feed the set top box in to it. This presents a challenge. The Sonos has a single RCA pair, the turntable requires a pre amp. Is there an auto switching device to take both tv and turntable feed in to the Sonos?


The end result needs to be super simple to use.