The single HDMI(ARC) port on the Denon DHT-S416 is meant for connection to a TV using Audio Return Channel and is limited in available bandwidth.
For use with other devices, a model with an additional HDMI input port featuring full bandwidth is necessary for any lossless multichannel PCM, Dolby or DTS signals coming from a connected device. If wanting to stay with a Denon soundbar, the DHT-S517 is so equipped.
Denon
www.denon.com