Sonos confirms some missing details about Arc Ultra – and says its app now has 90% of its missing features back
The first questions was around its channel count, which is officially given as 9.1.4. The last number there is the relevant part – it means four height channels for Dolby Atmos. However, the Arc Ultra's specs say it has two upfiring drivers, so we wanted to get Sonos' official line on how two turns into four.