The original Sonos Ace headphones were overshadowed by software issues and limited ecosystem integration at launch. While they offered strong build quality and comfort, their flagship feature was restricted to a single soundbar model and lacked broader music streaming compatibility.
The Sonos Ace Ultra are the headphones Sonos should have made the first time
With refined audio delivery, upgraded active noise cancellation, and Wi-Fi audio streaming capabilities, the Ace Ultra firmly establish themselves as true Sonos ecosystem products.
The Ace Ultra retain the familiar silhouette of their predecessor while introducing substantial internal improvements.
Launched at the same initial price point, the updated model introduces two-way audio pass-through between Sonos hardware and the headphones, though this feature is currently designated as early access.
Design and Ergonomics
The Sonos Ace Ultra maintain the clean, understated aesthetic of the original model. They remain remarkably comfortable for extended listening sessions, accommodating glasses wearers without causing pressure points. Despite a minor weight increase to 0.71 pounds, the headphones feel balanced during daily use. The ear cushions are plush, magnetic, and easily detachable, while the internal battery is user-replaceable.
Retaining physical buttons and the Content Key volume slider instead of adopting capacitive touch panels proves to be a practical choice. The slider responds reliably and provides direct physical access to system features such as TV audio swapping.
The multifunctional Content Key control serves as both a sliding mechanism and a clickable button for intuitive operation.
For wired setups, the headphones support lossless audio transmission over USB-C.
Ecosystem Integration
Expanding far beyond the basic television audio swap of the previous generation, the Ace Ultra introduce headphone linking. Users can redirect playback from any Sonos speaker or group directly to the headphones via a Wi-Fi connection, encompassing external sources like turntables linked to the ecosystem.
While functional, the ecosystem integration has minor operational quirks. Transferring audio back from the headphones defaults to the nearest speaker rather than the previous playback group, requiring manual adjustments within the companion application.
During the early access phase, Wi-Fi audio streaming operates using a lossy compression stream optimized for reliability, meaning hi-res lossless wireless playback is not yet fully realized.
A magnetic storage pouch integrated into the carrying case securely houses the included USB-C and 3.5mm audio cables.
At present, native lossless audio is restricted to compatible devices via Bluetooth using aptX Lossless or a wired USB-C connection capped at 16-bit/48kHz.
Audio Performance
Equipped with newly designed 40mm drivers and adaptive equalization, the Ace Ultra deliver deeper, well-controlled bass without drowning out vocal tracks. Stereo separation remains crisp across complex instrumental arrangements.
Midrange clarity can feel slightly congested on dense tracks, though the newly introduced 8-band EQ within the companion app allows users to fine-tune frequencies to their personal preference.
Playback can be seamlessly routed between home speakers and the headphones using physical controls or software commands.
Noise Cancellation and Call Quality
Active noise cancellation performance is improved over the original model, featuring an adaptive mode that adjusts to the listener's environment. While effective alongside music playback, ambient suppression in higher frequency ranges still lags slightly behind industry-leading alternatives from Sony and Bose.
Microphone clarity on calls handles indoor background noise effectively, though outdoor performance in windy or busy environments struggles against top-tier competitors.
Battery and Verdict
Battery life sees a welcome upgrade, stretching up to 35 hours of continuous playback. The headphones ship with a premium felt-lined carrying case and necessary cabling.
The Sonos Ace Ultra represent a mature evolution for the brand's audio hardware lineup, offering superior comfort, refined acoustics, and deeply integrated ecosystem features.
The headphones are available in four distinct color finishes: black, white, agave, and sand.
Unlocking the full potential of the Ace Ultra requires a commitment to the Sonos hardware ecosystem, representing an additional financial investment beyond the headset itself.
For existing Sonos system owners, these headphones serve as an effortless recommendation. Consumers outside the brand's ecosystem may find better standalone value and noise cancellation in competing flagship models.
