A:Answer Yes the LG CX can connect via eARC to the AMBEO and output Dolby Digital, Digital Plus, True HD, and Atmos along with other formats. Be sure to use the designated eArc HDMI ports on the AMBEO and CX with the HDMI included with the AMBEO (or HDMI 2.1 eARC capable cord if you need to purchase a longer length). The CX remote can also control the AMBEO power and volume via eARC but the AMBEO app or remote will be required to switch between preset sound profiles (movie, music, sports, news, etc).