A:Answer Hi Customer,
Yes, this AV receiver supports 5.1 and 7.1. To enjoy Dolby Atmos playback, speakers must be Dolby Atmos enabled speakers and the source must support Dolby Atmos. Visit the link below for more information regarding your concern.
https://helpguide.sony.net/ha/strdh79/v1/en/contents/TP0001628978.html
Happy to help,
Isaiah