It doesn't look like that's actually the case, as Dolby's promo page for "Dolby Atmos for the home" calls out having "up to 128 simultaneous independent audio o

It doesn't look like that's actually the case, as Dolby's promo page for "Dolby Atmos for the home" calls out having "up to 128 simultaneous independent audio objects in a mix": https://professional.dolby.com/tv/home/dolby-atmos/ https://professional.dolby.com/tv/home/dolby-atmos/ I think most home theater systems end up mixing down to Dolby surround channels practice, of course. My receiver supports Atmos, but I still only have five speakers. :)