I have a turntable and intend to retire my whole stereo sound systems, replacing it with my recently bought Sonos ARC which is connected to my TV now. However, I have a turntable which I am not sure if I can connect to ARC. I assume I need some equipment to connect to the TV and out to Sonos ARC but it would mean I need to have my TV on when I use the turntable ? I was looking at AMP and I suspect it is not the system to do it, as it connect to existing speakers not to ARC. Any advice out there ?