Sonos Ace Ultra adds Wi-Fi audio and adaptive noise cancellation for $599

Sonos lists the Ace Ultra at $599, with preorders estimated to ship September 29. The company says the over-ear headphones use a new 40mm driver, adaptive noise cancellation driven by ten microphones, and a battery rated for up to 35 hours with ANC on. The unusual part is their connection to compatible Sonos speakers: audio can be moved between the headphones and a system with the Content Key. That Headphone Linking feature is still opt-in Early Access, subject to change, and requires compatible hardware, Wi-Fi and the Sonos app.