Hi, looking for some help please. I have a Samsung UE55NU7400 and currently a SONOS playbar via optical. Im looking to replace the playbar for the new SONOS ARC. I would like to know if I will be able to benefit from the dolby atmos sound etc the arc offers? The arc will need to be connected via HDMI and I use a BT 4K youview box via HDMI. Hope my question makes sense - simple terms where possible please. Thanks all.