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What Sonos specifies
The figures below come from the Sonos US product page for the Ace Ultra, accessed for this article. Most are manufacturer specifications or claims. Prices and shipping estimates are US-only and can change, so confirm them on Sonos’s product page before you buy.
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| Item | Sonos figure | What kind of figure it is |
|---|---|---|
| US price | $449 (Ace Ultra); $349 (original Ace, shown as a comparison) | Listed price on the Sonos US page; regional prices not verified |
| Driver | 40 mm, one custom driver per ear cup | Manufacturer specification |
| Microphones | 10, used for noise control, calls, Aware mode, and TrueCinema | Manufacturer specification |
| Battery life | Up to 35 hours with ANC or Aware mode on | Manufacturer claim; test conditions not detailed on the page |
| Rapid charge | Three minutes for up to three hours of playback | Manufacturer claim under the conditions Sonos states on its page |
| Noise cancelation | Up to twice the ANC performance of the original Ace | Manufacturer comparison, not an independent measurement |
| Replacement Battery Kit | $25; estimated shipping September 29, 2026 | Listed price and estimate on the accessed US page |
| Ear cushions | $39; estimated shipping October 9, 2026 | Listed price and estimate on the accessed US page |
Headphone linking: the feature that changes the math
Headphone linking is the reason the Ace Ultra exists as a Sonos product rather than just another premium headphone. Sonos support says it moves audio that is already streaming to a compatible Sonos product over the local Wi-Fi network to the Ace Ultra, so you can continue listening on the headphones when you leave the room. Setup runs through the Sonos app on iOS or Android, as described in Sonos’s guide to setting up headphone linking. Sonos labels the feature Early Access. It is opt-in, provided as-is, and subject to change during ongoing development.
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- A compatible Sonos product already set up on your system. Sonos lists the Amp, Arc, Beam, Era, Five, Play, Ray, Roam, and Move families, subject to listed conditions such as not using certain products as rear surrounds.
- Wi-Fi coverage strong enough to hold the session. Sonos notes that weak coverage can interrupt it.
- Audio started in the Sonos app. The supported content includes services launched from the Sonos app, line-in sources, and a local music library.
- Only one Ace Ultra can hold an active headphone link session at a time.
What linking cannot move
Sonos’s known limitations page sets the boundaries of the feature, and they matter more than the headline suggests:
#1 Best Overall
- HEADPHONES | Featuring Dolby Atmos.
- SPATIAL AUDIO | Enjoy an industry-leading Dolby Atmos experience with dynamic head tracking.
- LOSSLESS AUDIO | Stream lossless audio over Bluetooth or via USB-C.
- ACTIVE NOISE CANCELLATION | World-class ANC neutralizes external sounds for maximum immersion.
- ALL-DAY COMFORT | Bespoke fit with plush memory foam, soft vegan leather, and a design that suits all head shapes, hairstyles, and accessories.
- Bluetooth and AirPlay audio cannot be moved through linking. The reviewer confirmed that Apple Music played over AirPlay will not work for linking.
- Direct-control music sessions cannot be swapped. Sonos’s examples are Spotify, Amazon Music, Pandora, and Tidal when they are started directly on the speaker rather than in the Sonos app.
- Quality is capped. A linked session is lossy stereo, and lossless and Spatial Audio quality are not supported through linking.
In practice, linking is a convenience for people who already listen through Sonos speakers. It is not a general-purpose wireless link for your phone or laptop.
TV Audio Swap is a separate feature
TV Audio Swap sends the sound from a compatible Sonos home theater speaker to Sonos headphones. It is a different system with different requirements, so do not assume a product that supports one supports the other. Sonos’s TV Audio Swap support article lists Arc, Arc SL, Arc Ultra, Beam (Gen 1), Beam (Gen 2), Beam Ultra, and Ray as supported home theater speakers, and allows a maximum of two Sonos headphone sets in one session.
Rank #2
- INCREDIBLE SOUND: Custom acoustic platform delivers rich, balanced audio for music, calls and everyday listening.
- LOSSLESS AUDIO SUPPORT: USB-C lossless audio and sound profiles optimize music quality across devices and environments. Additional option to use the 3.5 mm cable for a standard analog experience.
- ACTIVE NOISE CANCELLING (ANC): block distractions at work, on flights or during your daily commute. Or use Transparency mode to let the sounds of your environment mix in with your music.
- SEAMLESS WIRELESS CONNECTIVITY: One-touch pairing with Apple & Android for easy switching across devices.
- SPATIAL AUDIO IMMERSION: Personalized dynamic head tracking, 360-degree sound for movies, music and immersive everyday listening.
| Question | Headphone linking | TV Audio Swap |
|---|---|---|
| What it moves | Audio already streaming to a compatible Sonos product | TV audio from a compatible home theater speaker |
| Compatible products | Amp, Arc, Beam, Era, Five, Play, Ray, Roam, and Move families, subject to listed conditions | Arc, Arc SL, Arc Ultra, Beam (Gen 1), Beam (Gen 2), Beam Ultra, and Ray |
| Headphone limit | One Ace Ultra per active link session | Up to two Sonos headphone sets per session |
| Status | Early Access, opt-in, subject to change | Described in Sonos’s support material without the Early Access label in the material reviewed |
The reviewer reported one audio cut-out during a TV Audio Swap session, and a colleague did not reproduce it. Treat that as a single observation, not a known defect.
What the reviewer observed
Billy Steele’s Engadget review, published September 22, 2026, is the most detailed independent account available for this article. It describes subjective listening, not lab testing, and his observations are his own:
Rank #3
- NOISE CANCELLING HEADPHONES: Effortlessly combines noise cancellation technology with passive features so you can shut off the outside world, quiet distractions, and take music beyond the beat
- COMFORTABLE HEADPHONES: Plush over-ear cushions softly hug your ears, while a secure and comfortable padded band gently keeps your studio headphones in place for those extra-long listening sessions
- 2 LISTENING MODES: These wireless Bluetooth headphones feature Quiet and Aware Modes that let you toggle between full noise cancelling or full awareness of your surroundings for seamless sound control
- HIGH-FIDELITY AUDIO/EQ CONTROL: Supercharge your favorite tracks with high-fidelity audio and Adjustable EQ that puts you in control of the bass, mid-range, and treble for unmatched bold sound
- ALL DAY BATTERY LIFE: Bose QuietComfort wireless headphones provide up to 24 hours of battery on a single charge, plus a 15-minute charge via USB-C gives you up to 2.5 hours of additional play time
- Sound: better bass detail than the original Ace, and a natural-sounding Aware mode.
- Noise cancelation: an improvement over the original Ace in his testing.
- Calls: above-average microphone pickup.
- Battery: after 19 hours of testing with ANC on for almost all of that time, he reported 45 percent battery remaining. That pace is roughly consistent with Sonos’s 35-hour rating under those conditions, but it is one person’s test, not a standardized measurement.
- Linking: it worked in his setup.
- Caveats: he calls the price high, and says the best features depend on the Sonos app and additional Sonos hardware.
His headline, “The company’s new headphones can truly be part of a Sonos system,” reflects the same point: the device is strongest inside the ecosystem. Read his praise as a specific account of one test setup, not a guarantee of how the headphones will sound in yours.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Battery life and replacement parts
Sonos says the battery and ear cushions are designed to be swapped by the owner, and it sells a Replacement Battery Kit for $25 and ear cushions for $39 on the US page. The shipping estimates on that page were September 29, 2026 for the battery kit and October 9, 2026 for the cushions. Both are estimates, and the first has already passed as of this article, so check current availability before you order. Sonos’s listing also does not confirm whether the kit and cushions are compatible with every Ace Ultra colorway, so verify model compatibility on the product page before buying.
Rank #4
- Intelligent Noise Cancellation Adapts with You: Our Nothing headphone 1 feature advanced Hybrid Active Noise Cancellation, powered by next-gen processors and adaptive mics, to block out distractions. Smart Adaptive Mode automatically adjusts to your environment, while Transparency Mode lets in ambient sound when you need awareness. Personalize your experience with four ANC settings (High/Mid/Low/Adaptive) for truly focused, crystal-clear listening
- Nothing x KEF Headphone (1) : Nothing Headphone (1) experience audio perfected through a unique partnership with British audio legend KEF. Leveraging over 60 years of acoustic expertise, Nothing Noise Cancelling Headphone delivers a naturally balanced sound stage where every note shines as artists intended. Enjoy unparalleled flexibility with Hi-Res Audio support including LDAC technology, USB-C audio, and a 3.5mm jack. Dual Connection capability lets you seamlessly switch between two devices
- Uninterrupted Audio with Immersive Sound: Engineered for all-day use, Nothing Headphones 1 deliver up to 80 hours of playtime (35 hours with ANC on). A quick 5-minute charge provides 5 hours of power. Coupled with this endurance is a lossless audio experience, Nothing Wireless Headphones offer Spatial Audio with head tracking and Hi-Res Wireless certification for exceptional clarity and a deeply immersive sound stage
- Sink In, Take Control: Designed for all-day wear, Nothing Bluetooth Wireless Headphone ergonomic frame and memory foam cushions provide a comfortable, secure fit. The Over-Ear Noise Cancelling Headphone features intuitive roller and paddle interface puts volume adjustment, playback, and noise mode switching at your fingertips, with full customization available in the Nothing X app. This thoughtful integration of form and function ensures a continuously surround sound Journey
- Explore the Nothing X app: Craft your unique audio profile with the Nothing X app's advanced 8-band equalizer.Tailor your Nothing Headphone 1 with Adaptive ANC settings and enhance depth with the Ultra Bass mode. Customize your Bluetooth active noise canceling headphones' touch buttons to execute your most-used commands instantly
Who should buy the Ace Ultra
Existing Sonos owners
If you already run compatible Sonos speakers, the case is strongest. Headphone linking gives you a private listening option that fits into a system you already use, and the feature is the main reason to pay the premium over the original Ace. Keep in mind that linking is Early Access and can change.
Home theater buyers
TV Audio Swap is only useful if you own one of the listed home theater speakers. If you are buying a soundbar primarily to use with these headphones, the total cost is the soundbar plus $449, which is a larger commitment than the headphones alone.
Standalone headphone shoppers
If you do not own compatible Sonos gear, you are paying $449 for sound, noise cancelation, battery, and comfort. The reviewer’s observations favor the Ace Ultra over the original Ace on those points, but the price gap is $100, and the review does not include a head-to-head test against competing premium headphones. Bose SimpleSync is named as a nearby private-listening alternative, but the available evidence does not establish how it compares, so avoid assuming the Ace Ultra is the stronger choice over it or other premium models.
Sonos states that the Ace Ultra’s Bluetooth and Wi-Fi operation does not require a Sonos speaker. The Sonos purchase only becomes relevant if you want linking or TV Audio Swap.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
