With 15 amps and a new type of driver for low frequency sounds, the Sonos Arc Ultra might be the company's first soundbar that doesn't need a subwoofer.

Sonos developed its new soundbar alongside audio specialists from both music and movie industries, but we have to wonder which the tuning will benefit more.

Amazon has the Sonos Era 100 speaker, the much-improved successor to the Sonos One, on sale for $50 off. Prime Day also lets you save big on a pair of Sonos soundbars: the Beam (Gen 2) and Ray, which are up to $110 off.

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.

Sonos reinvents its premium soundbar with revolutionary transducer technology, introduces Sub 4 with a refreshed design Sonos app updates deliver significant progress in performance and the return of legacy features,

Sonos unveils the Arc Ultra soundbar and Sub 4 subwoofer, featuring innovative Sound Motion technology and improved designs.