Headsets and headphones / Compare

Nothing Headphone (a) vs Sonos Ace Ultra

A

Product A: Nothing

Headphone (a)

89 of 161 known

Change Nothing Headphone (a)

Compare the Sonos Ace Ultra with

Search headsets and headphones

B

Product B: Sonos

Ace Ultra

71 of 161 known

Change Sonos Ace Ultra

Compare the Nothing Headphone (a) with

Search headsets and headphones

All 161 fields

Every value links to where we found it.

Only differences

ANothing Headphone (a)

BSonos Ace Ultra

General

4 of 8 differ

Series

Not available

Not available

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

B1862Spec databaseifixit.com/Device/Nothing_Headphone_(a)Read 15 October 2026Specifications: Model number B186. The Amazon listing also prints Model Number B186. Retailer codes such as A11300038 at LDLC are not stored.

S52A, ACEULUS1BLK, ACEULUS1, ACEULUS1AGAV, ACEULUS1SAND1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Page data lists US SKUs: ACEULUS1BLK Black, ACEULUS1 Soft White, ACEULUS1AGAV Agave, ACEULUS1SAND Sand. S52A is the hardware model from the FCC filing as reported by TBreak.11Press articletbreak.com/tbreak/sonos-ace-ultra-headphones-fcc-filing-september-launchRead 14 October 2026TBreak: the heavily redacted FCC filing identifies the product as model S52A.

GTIN / EAN

6974434227446, 6974434227453, 6974434227439, 69744342275696Maker product pagede.nothing.tech/products/headphone-aRead 15 October 2026Store variant data on the Nothing EU store: SKU and barcode 6974434227446 White, 6974434227453 Black, 6974434227439 Pink, 6974434227569 Yellow.

Not available

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

5 March 20264Reviewtechradar.com/audio/wireless-headphones/the-nothing-headphone-a-are-here-and-they-rock-here-are-5-things-you-need-to-know-about-themRead 15 October 2026Article published 5 March 2026 on the launch. Pre-orders opened on 5 March 2026 and sales started on 13 March 2026 for white, black and pink. The yellow edition followed from 6 April 2026 (Hardware Busters). iFixit says the newsroom announcement was on 26 February, which is a teaser date.5Press articlehwbusters.com/news/nothing-launches-affordable-headphoneRead 15 October 2026Available starting March 13 for black, white and pink and April 6 for the limited-edition yellow. Pre-orders open at launch. The article gives EUR 189 for Greece, a country price that is not stored.

1 September 20264Press articlehifi.fan/stories/sonos-ace-ultra-headphones-released-with-headphone-engine-2-and-audio-handoverRead 14 October 2026HiFi Editorial dated 1 September 2026: Sonos has announced the Ace Ultra.

Status

Available1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026The page sells the headphones at $199 with Add to bag.

Available1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Sonos US store shows Available now with Add to cart and in-stock offers.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$1991Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026$199 on the Nothing US store with an Add to bag button.3Reviewtechradar.com/audio/wireless-headphones/nothing-headphone-a-reviewRead 15 October 2026Official price $199 / GBP 149 / AU$329.

$4491Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026$449 on the Sonos US store, unchanged from the launch price reported by What Hi-Fi? and Tom's Guide.4Press articlehifi.fan/stories/sonos-ace-ultra-headphones-released-with-headphone-engine-2-and-audio-handoverRead 14 October 2026Retail prices 399 GBP, $449, AU$699 and EUR 449.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Tested at 399 GBP / $449 / AU$699.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€1596Maker product pagede.nothing.tech/products/headphone-aRead 15 October 2026German Nothing store lists EUR 159. Trusted Reviews and GSMArena give the same EUR 159 MSRP at launch. Tax treatment is not stated.13Reviewtrustedreviews.com/reviews/nothing-headphone-aRead 15 October 2026MSRP of GBP 149 in the UK ($199 / EUR 159).14Press articlegsmarena.com/nothing_headphone_a_unboxing-news-72043.phpRead 15 October 2026At GBP 149 / $199 / EUR 159 you're getting a lot for not a lot.

€4493Maker product pagesonos.com/de-de/shop/sonos-ace-ultraRead 14 October 2026449 EUR on the German Sonos store. German list prices include VAT. Press at launch also gave EUR 449.4Press articlehifi.fan/stories/sonos-ace-ultra-headphones-released-with-headphone-engine-2-and-audio-handoverRead 14 October 2026Retail prices 399 GBP, $449, AU$699 and EUR 449. Tax treatment is not stated.6Reviewtomsguide.com/audio/headphones/sonos-ace-reviewRead 14 October 2026The Sonos Ace Ultra land at $449 (399 GBP / 449 EUR).

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

Not available

ColoursiThe maker's own colour names

White, Black, Pink, Yellow1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Colour picker: White, Black, Pink, Yellow.

Black, Soft White, Agave, Sand1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Colors: Black, Soft White, Agave, Sand. Finish: Matte.

Segment

Music1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Listed under Audio. Marketed for music listening with ANC, a tuned EQ and Hi-Res Audio. Stored as music.

Music1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Maker markets premium wireless noise-canceling headphones for music, spatial audio and TV listening.

Design

1 of 7 differ

Form factor

Over-ear2Spec databaseifixit.com/Device/Nothing_Headphone_(a)Read 15 October 2026Specifications: Type Over-ear.

Over-ear2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Over-ear headphones with ear cushions that surround the ears. What Hi-Fi? and SoundGuys call them over-ear.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Reviewed as over-ear headphones.

Ear cup enclosureiClosed, open or semi-open acoustic enclosure. This does not describe how the headset folds.

Closed2Spec databaseifixit.com/Device/Nothing_Headphone_(a)Read 15 October 2026Specifications: Enclosure Closed.

Closed9Reviewsoundguys.com/product/sonos-ace-ultraRead 14 October 2026Spec table: Acoustic design Closed-back.

Wearing style

Headband8Reviewsoundguys.com/nothing-headphone-a-review-154232Read 15 October 2026Headband with a plastic friction band.

Headband2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Adjustable headband that extends with ear cups on each side.

FoldingiFlat means the ear cups rotate flat. Inward means the ear cups fold toward the headband.

None9Measurementsoundguys.com/product/nothing-headphone-aRead 15 October 2026Spec list: Foldable No. Which? also lists Headphones fold: No.10Reviewwhich.co.uk/reviews/headphones/nothing-headphone-aRead 15 October 2026Public spec list: Headphones fold No. The rest of the review is paywalled and was not used.

Flat8Reviewtechradar.com/audio/wireless-headphones/sonos-ace-ultra-reviewRead 14 October 2026The Ace Ultra are not fully foldable, but the ear cups rotate flat for stowing in the case.

Swivelling ear cupsiEar cups can rotate relative to the headband. Tilting alone does not count.

Yes16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026The rectangular earcups can both tilt and swivel.

Yes2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Plush ear cushions, rotating ear cups and an adjustable headband. TechRadar and Man of Many say the cups rotate flat and swivel both ways.

RGB lighting

Not available

Not available

Lighting zonesiNumber of independently controllable lighting areas across both ear cups.

Not available

Not available

Drivers and sound

9 of 20 differ

Driver type

Dynamic1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: a 40 mm titanium-coated diaphragm with a next-gen magnet and voice-coil system. HeadphoneCheck calls them 40 mm dynamic drivers.16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026Custom-developed 40 mm dynamic drivers. Technical specifications: transducer principle dynamic.

Dynamic1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Custom 40 mm dynamic driver in each ear cup.

Driver sizeiDiameter of the largest sound driver. Do not use the microphone capsule diameter.

40mm1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Sound: Drivers 40 mm.

40mm1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Custom 40 mm driver in each ear cup.

Drivers per sideiNumber of sound-producing transducers in one side, excluding microphones.

Not available

11Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026One 40 mm driver in each ear cup.

Diaphragm material

PEN+PU dome, titanium-coated1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Diaphragm: Dome material PEN+PU, Coating titanium-coated.

Not available

Magnet

Not available

Dual-ring magnet motor5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026New Sonos-designed 40mm dynamic drive units with a dual-ring magnet motor structure.

Frequency response (wired or passive)iPublished acoustic range for wired listening, or the maker’s single range when no mode is distinguished. Power state and test standard belong in the source note.

Min20 HzMax40 kHz1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Sound: RF 20 Hz - 40,000 Hz. The row label is RF and no power state or test standard is given. Expert Reviews and iFixit repeat 20 Hz to 40 kHz.

Not available

Wireless audio transmission bandiFrequency range of audio transmitted over the wireless connection, not the acoustic response of the driver. Codec, sampling rate and bitrate conditions belong in the source note. When the maker gives a range per codec, the widest range is stored and its codec goes in the source note.

Not available

Not available

Impedance (passive when specified)iUse the headset-off value for a passive analog connection when the maker publishes both powered and passive values. Note the power state and test frequency.

16Ω17Retailer pageamazon.com/dp/B0G6L57FHVRead 15 October 2026Listing attribute: Impedance 16 ohm. The maker table has no impedance row. The listing also prints Model Number B186 and a 1 year manufacturer warranty. The power state is not stated. The listing title says 5 HD mics, which the maker does not support.

Not available

Sensitivity (passive when specified)iUse the headset-off figure when both powered and passive values exist. The power or voltage reference, test distance and frequency belong in the source note.

Not available

Not available

Sensitivity referenceiPublished power or voltage reference for sensitivity. Do not assume 1 mW when the source gives only a dB value.

Not available

Not available

THD (claimed)iPublished distortion figure or numerical upper bound. The source note states any less-than sign and test level.

Not available

Not available

Max input power

Not available

Not available

Max digital audio sample rateiHighest supported digital audio sample rate over a USB cable or wireless dongle. This is not the microphone rate or acoustic frequency response.

96kHz16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026Over USB-C under macOS the headphones are recognised automatically and support up to 24-bit/96 kHz. This is the reviewer's observation and the maker prints 24-bit/96 kHz only for LDAC.

48kHz4Press articlehifi.fan/stories/sonos-ace-ultra-headphones-released-with-headphone-engine-2-and-audio-handoverRead 14 October 2026Wired listening via the USB-C port offers audio up to 16-bit/48kHz.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Native support for 16-bit/48kHz is available via the wired USB connection.

Max digital audio bit depthiHighest published digital playback bit depth over a USB cable or wireless dongle.

24bits16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026Over USB-C under macOS the headphones support up to 24-bit/96 kHz.

16bits4Press articlehifi.fan/stories/sonos-ace-ultra-headphones-released-with-headphone-engine-2-and-audio-handoverRead 14 October 2026Wired listening via the USB-C port offers audio up to 16-bit/48kHz.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Native support for 16-bit/48kHz is available via the wired USB connection.

DAC

Not available

Not available

Personalised soundiA manufacturer-supported hearing test or ear scan creates a device sound profile tailored to the listener. Generic equalizer adjustments do not count.

No16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026A personalised sound profile feature is missing compared to the Headphone (1).

Not available

Onboard EQiCustom playback EQ profiles stored in the headset and applied without the host app running. Note supported active connections. Receiver-only or software-only EQ does not count.

Not available

Not available

Custom EQ bandsiNumber of bands in the custom playback equalizer. Microphone EQ bands are excluded.

81Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Nothing X: advanced 8-band equaliser.

81Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Use the Sonos app to adjust bass, mids and treble with 3-band or 8-band EQ. Stored as 8, the larger option.

EQ presets

Balanced, More Bass, More Treble, Voice13Reviewtrustedreviews.com/reviews/nothing-headphone-aRead 15 October 2026Four default EQ settings. The names come from the Nothing support article on equalisers for the Headphone (a): Balanced, More Bass, More Treble and Voice, plus Custom and Advanced modes.15Maker product pagesupport.nothing.tech/hc/en-us/articles/44186010442001-How-many-equalisers-does-Nothing-Headphone-a-offerRead 15 October 2026Four preset EQ modes, Balanced, More Bass, More Treble and Voice, with Custom and Advanced modes. The page is behind a bot check, so the wording was read through search result text.

Not available

Volume limit

Not available

Not available

Spatial audio

2 of 3 differ

Spatial audio supportiNamed headset or host spatial-audio systems that the maker or reviewer explicitly supports. A platform feature may require compatible hardware, software or a separate licence.

Static Spatial Audio: Cinema mode, Static Spatial Audio: Concert mode1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Nothing X: Static Spatial Audio modes inspired by live concerts and cinematic moments. SoundGuys and TechRadar name the two modes Cinema and Concert.3Reviewtechradar.com/audio/wireless-headphones/nothing-headphone-a-reviewRead 15 October 2026Spatial audio with Concert and Cinema modes, processed by Nothing, with no head tracking or Dolby Atmos.

Dolby Atmos, TrueCinema1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Dolby Atmos with a compatible device and content. TrueCinema tunes the headphones to your room and a compatible Sonos soundbar and renders a 7.1.4 mix with spatial audio. Dolby Atmos and TrueCinema need compatible Sonos gear or content.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Dolby Atmos spatial audio with head tracking and TrueCinema. No toggle in the app to switch Atmos on and off.

Spatial audio licence includediA paid spatial-audio licence is bundled or embedded. Compatibility with a separately purchased app does not count.

Not available

Not available

Head tracking

No1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026TechRadar says there is no head tracking or Dolby Atmos. The maker page lists none.3Reviewtechradar.com/audio/wireless-headphones/nothing-headphone-a-reviewRead 15 October 2026You do not get head tracking or Dolby Atmos here.

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Sonos Intelligent Motion Processing with Dolby Head Tracking. Enable it in the Sonos app.

Noise cancelling

5 of 10 differ

Active noise cancelling

Yes1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Noise Cancellation: Type ADAPTIVE ANC.

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Adaptive Active Noise Cancellation uses ten microphones. Up to 2x more ANC than Sonos Ace at frequencies up to 65 Hz.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Standard full ANC alongside Aware Mode. Ten microphones, up from eight.

ANC typeiFeedforward uses outside microphones. Feedback uses inside microphones. Hybrid uses both. Voice-call noise filtering is separate.

Hybrid1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: 2mic Hybrid ANC (single side). Page text: dual feedforward and feedback microphones.16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026The hybrid noise cancelling is effective in the low-frequency range.

Not available

ANC microphonesiTotal microphones used for active playback noise cancellation across both sides. Do not substitute the total physical or voice microphone count.

41Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Total 4 mics and 2mic Hybrid ANC (single side). Read as two ANC microphones on each earcup, as on the Headphone (1) Pro table where 5 per side makes 10 in total. Expert Reviews reads it as ANC on one side only.

Not available

Adaptive ANCiNoise cancellation automatically changes with the environment or fit. Manually choosing a level does not count.

Yes1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Type ADAPTIVE ANC.

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Adaptive ANC adjusts for changes in fit caused by head movement, glasses, hair and other factors.

ANC levelsiNumber of adjustable cancellation strength steps. Off and transparency modes are excluded.

31Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: three levels of Active Noise Cancellation. Expert Reviews names Low, Mid and High plus an Adaptive setting.12Reviewexpertreviews.co.uk/technology/headphones-audio/nothing-headphone-a-reviewRead 15 October 2026Three levels, Low, Mid and High, plus an Adaptive setting.16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026The app has a three-level ANC mode (Low, Medium, High) and an adaptive option.

Not available

ANC attenuation (claimed)

40dB1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Depth up to 40 dB at 2000 Hz. Footnote 1: the 40 dB is a theoretical maximum from the Nothing laboratory and actual cancellation varies.

Not available

Transparency mode

Yes1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Features: Transparency mode.

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Aware mode blends ambient sound with your content. Voice boost is optional.

Adjustable transparency

No16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026The transparency mode offers no adjustable settings.

Not available

Conversation detectioniAudio pauses or lowers automatically when the wearer speaks. Voice assistant activation does not count.

Not available

Not available

Wind noise reduction

Not available

Not available

Measured

3 of 21 differ

Frequency response notesiMeasured by a reviewer, not claimed by the maker

Against the SoundGuys house curve the response sits about 4 to 5 dB above it in the sub-bass, dips to about 7.5 dB below it near 250 Hz and rises to about 7 dB above it near 3 kHz. The treble stays above the curve to 10 kHz and rolls off above 12.5 kHz.9Measurementsoundguys.com/product/nothing-headphone-aRead 15 October 2026Lab chart, SoundGuys Headphone Preference Curve: about +3.7 to +5.1 dB from 20 Hz to 100 Hz, +2.5 dB at 125 Hz, -7.5 dB at 250 Hz, -0.1 dB at 1 kHz, +6.8 dB at 3.15 kHz, +4.0 to +4.9 dB at 5 to 6.3 kHz, +1.5 dB at 10 kHz, -6.4 dB at 16 kHz and -20.9 dB at 20 kHz. The SoundGuys target is its own house curve and the test rig is not named. iFixit describes a bass-forward signature with a dip near 200 Hz.

Not available

Bass amountiReviewer’s bass deviation from its stated target. Positive is more bass. Target and test method belong in the source note.

Not available

Not available

Treble amountiReviewer’s treble deviation from its stated target. Positive is more treble. Target and test method belong in the source note.

Not available

Not available

Deviation from targetiReviewer’s full-range error from its target curve. Do not substitute a regional bass or treble error.

Not available

Not available

Consistency between fittingsiReviewer’s standard deviation across repeated fittings. Test rig and fitting procedure belong in the source note.

Not available

Not available

Harmonic distortioniIndependently measured harmonic distortion, with test level and method in the source note.

Not available

Not available

Sound leakageiIndependently measured leakage at 30 cm. Playback level and method belong in the source note.

Not available

Not available

Measured noise isolationiIndependently measured attenuation. Positive values mean more noise reduction. ANC state, rig and frequency bands belong in the source note.

Not available

Not available

Noise isolation (measured, best)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Passive isolation (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic quality notesiMeasured by a reviewer, not claimed by the maker

On a phone call the voice was audible and intelligible but a little muffled, and traffic noise was fully silenced.11Reviewtomsguide.com/audio/headphones/nothing-headphone-a-reviewRead 15 October 2026Call quality section: the callee found the voice audible and intelligible but a little muffled, and traffic noise around the caller was completely silent. This is a phone-call listening test and not a lab measurement.

Not available

Mic low-frequency extensioniMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic high-frequency extensioniMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic speech-to-noise ratioiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Measured latencyiEnd-to-end latency measured by a reviewer for a specific connection, platform and codec. Firmware, method and operating mode belong in the source note.

Not available

Not available

Bluetooth latency (measured, worst)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

2.4 GHz latency (measured, worst)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Measured battery lifeiReviewer’s continuous playback test. State the connection, ANC and lighting where known. Unknown settings stay omitted and are described in the source note.

Not available

Not available

Battery life (measured, max)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Clamping forceiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Weight (measured)iIndependently weighed headset. A review that repeats the maker’s number does not qualify. Cable and microphone inclusion belong in the source note.

311g(11 oz)16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026Technical specifications: Weight without cable 311 g and with cable 328 g. Which? also lists 311 g. The maker states 310 g. The cable inclusion matches the maker basis because the headphones have a detachable cable.

Not available

Microphone

4 of 16 differ

MicrophoneiMain microphone used for speech. Secondary internal microphones may be described in the source note.

Built-in1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Built-in microphones for calls. No boom microphone appears in the box list or spec table.

Built-in1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Ten microphones for noise control, calls, Aware mode and TrueCinema. No boom microphone.

Microphone element

Not available

Not available

Microphone pickup patterniUse the maker’s exact named pattern. Unidirectional does not establish whether the capsule is cardioid, supercardioid or hypercardioid.

Not available

Not available

Voice microphonesiTotal microphones used for voice pickup or beamforming across both sides. ANC-only microphones are excluded.

31Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: 3 MIC ALGORITHM FOR CALLS. Page text: three microphones for Clear Voice Technology.

Not available

Total microphonesiEvery physical microphone across the headset, including call, ANC and calibration microphones. Shared microphones count once. Excludes microphones in charging cases or receivers, and vibration sensors. Use an explicitly published physical total, never a sum of overlapping role counts.

41Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Total 4 mics. The Amazon listing title says 5 HD mics, which the maker table does not support.

101Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Ten microphones for noise control, calls, Aware mode and TrueCinema. The maker states the total for the headset.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026The Ace Ultra houses 10 microphones, up from eight.

Mic frequency responseiAcoustic microphone response, not its digital sampling rate. Connection-specific ranges belong in the source note.

Not available

Not available

Mic sensitivityiPublished microphone sensitivity. Reference such as dBV/Pa or dBFS, frequency and distance belong in the source note.

Not available

Not available

Mic signal-to-noiseiPublished microphone signal-to-noise ratio. Minimum or typical conditions belong in the source note.

Not available

Not available

Mic sample rateiExplicitly published digital microphone capture or speech sampling rate. State the audio route in the source note, or say it is unpublished. Internal capture does not prove the effective rate on every connection. Acoustic bandwidth, playback rate and generic microphone-chip capability do not qualify.

Not available

Not available

Mic noise reductioniProcessing that removes noise from transmitted speech. Playback ANC and a directional microphone alone do not count.

AI1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026AI-powered Clear Voice Technology trained on over 28 million real-world scenarios for calls.

DSP1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Microphones target your voice and suppress background noise on calls. Stored as DSP processing. The maker does not claim AI processing.

Flip to mute

Not available

Not available

Mute button

Not available

Not available

Mute indicatoriPublished indication of microphone mute. mechanical_marker is a visible physical marker showing the microphone's mute-switch position. LED options require an electronic light. The in-line controller option is for a mute light on a cable remote.

Not available

Not available

Sidetone

Not available

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Sidetone helps your voice sound natural and clear during calls, even when ANC is enabled.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Sidetone is a Noise Control setting in the Sonos app. It may not work when plugged into another device during a call.

Adjustable sidetone

Not available

Not available

Foam microphone windscreeniA foam cover for the voice microphone. An internal metal mesh pop filter does not count.

Not available

Not available

Connectivity

7 of 20 differ

Audio connectionsiConnections that carry playback audio. Charging or firmware USB alone does not count as USB audio.

Bluetooth, Analog, USB1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: LDAC over Bluetooth, and a USB-C or 3.5 mm connection. The box has a USB-C cable for charging and USB audio and a 3.5 mm cable.

Bluetooth, USB, Analog1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Bluetooth, USB-C line-in and USB-C to 3.5 mm. The product page lists USB-C and 3.5 mm.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Bluetooth. The USB-C port takes line-in audio over a USB-C to 3.5 mm cable or a USB-C to USB-C cable. Bluetooth is disabled while a USB-C cable is connected.

Analog source plugsiAnalog plug(s) supplied for the source device, including adapters. The headset-side jack is listed separately.

3.5 mm TRS2Spec databaseifixit.com/Device/Nothing_Headphone_(a)Read 15 October 2026Specifications, Interface: Line-in 3.5 mm stereo.

Not available

Cable connector on headsetiConnection used by the playback cable at the headset. A fixed cable is not replaceable through a headset jack.

3.5 mm1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: connect with a USB-C or 3.5 mm jack. TechRadar and Expert Reviews describe a 3.5 mm jack on the right earcup.

USB-C2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026USB-C to 3.5 mm cable and USB-C to USB-C cable both connect to the headphone USB-C port. Not compatible with third party cables.

Longest included cableiLength of the longest supplied cable, including charging and dongle cables. Individual cable lengths are listed in Cables included.

1.2m1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026In the box: 3.5 mm audio cable 1.2 m and USB-C cable 1.2 m.

1.2m1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Longest included cable is the USB-C to 3.5 mm cable, 3.94 ft (1.2 m).

Headset USB plug or portiUSB plug or port on the headset or its included wired audio adapter. A charging-only USB port can appear here.

USB-C1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026In the box: USB-C cable (1.2M) for charging and USB audio.

USB-C2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026USB-C port for charging and line-in.

Audio over USB-C cableiPlayback through a USB-C cable or included wired USB-C audio adapter. A charging-only USB-C port does not count.

Yes1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026In the box: USB-C cable (1.2M) (charging & USB Audio). TechRadar listened over USB-C in Hi-Res Audio.

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Lossless audio over Bluetooth with aptX on a supported device, or via a USB-C connection.6Reviewtomsguide.com/audio/headphones/sonos-ace-reviewRead 14 October 2026Connectivity lists USB-C audio.

Passive wired listeningiAnalog playback works with the headset powered off or its battery empty. An active analog converter that needs headset power does not count.

Not available

Not available

Wireless receiveriDedicated wireless audio receiver or dongle. A wired USB sound card does not count.

None1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Bluetooth only. The box lists no receiver or dongle.

None2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Bluetooth headphones with Wi-Fi for the Sonos system. No dongle in the box.

Wireless receiver connectoriPhysical USB connector on the receiver. Supplied extension cables and adapters are explained in the source note. Both means two native connector types.

Not available

Not available

Wireless range (claimed)iMaker’s advertised wireless range. Connection and indoor or outdoor conditions belong in the source note. Measured distance is not stored here.

10m1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Connectivity: Connection range 10 M.

Not available

Bluetooth

5.41Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Bluetooth version 5.4.

6.01Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Bluetooth 6.0 supports audio streaming from any Bluetooth-enabled device.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Bluetooth 6.0.6Reviewtomsguide.com/audio/headphones/sonos-ace-reviewRead 14 October 2026Connectivity: Bluetooth 6.0, WiFi, USB-C audio and 3.5mm input.

Bluetooth codecsiNamed Bluetooth audio codecs supported by this exact model. Host, firmware and operating-mode restrictions belong in the source note.

AAC, SBC, LDAC1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Codecs AAC, SBC, LDAC.

SBC, AAC, aptX Adaptive Lossless5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Tech specs list SBC, AAC and aptX Lossless. aptX Lossless over Bluetooth is limited to 16-bit/44.1kHz files.6Reviewtomsguide.com/audio/headphones/sonos-ace-reviewRead 14 October 2026Specs: Codecs SBC, AAC, Qualcomm aptX Adaptive Lossless.7Retailer pagehk.tcacoustic.asia/products/sonos-ace-ultraRead 14 October 2026Distributor copy of the Sonos tech spec lists Bluetooth Codecs: SBC, AAC, aptX Adaptive Lossless. Sonos' own page does not name codecs. What Hi-Fi? writes aptX Lossless.9Reviewsoundguys.com/product/sonos-ace-ultraRead 14 October 2026Spec table: AAC, aptX Lossless, SBC.

LE AudioiLE Audio playback support. Bluetooth Low Energy for app control alone does not count.

Not available

Not available

AuracastiAuracast broadcast audio support. Required phone, firmware and app conditions belong in the source note.

Not available

Not available

Bluetooth multipointiCan remain connected to multiple Bluetooth source devices at once. Mixing Bluetooth with a proprietary dongle is a separate field. A maker's dual connection to two Bluetooth devices at once counts.

Yes1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Dual connection YES. SoundGuys says it is not true multipoint but two devices stay connected and swap streams. Dual connection is off by default and is switched on in Nothing X.8Reviewsoundguys.com/nothing-headphone-a-review-154232Read 15 October 2026Dual connection: two devices on the connections list swap audio streams at the same time, no true multipoint.

Yes2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Using Multipoint, you can connect Sonos Ace Ultra to 2 Bluetooth devices and automatically switch between audio streams. Multipoint is off by default. Turn it on in Sonos Ace Ultra Settings.

Multipoint devicesiNumber of Bluetooth source devices connected at once, not the number remembered for later pairing.

21Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Dual connection: two devices.

22Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Connect to 2 Bluetooth devices.

Paired devices remembered

Not available

Not available

Mixes 2.4 GHz and Bluetooth audioiPlays both wireless audio streams at the same time. Automatic switching or Bluetooth standby does not count.

Not available

Not available

Fast pairing

Google Fast Pair, Microsoft Swift Pair1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Tech Integrations: Google Fast Pair and Microsoft Swift Pair.

Not available

Base station

Not available

Not available

Latency

2 of 2 differ

Low latency modeiA selectable mode intended to reduce audio delay. A low-latency connection without a distinct mode does not count.

Yes1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Low lag mode. TechRadar finds a low-lag mode for gaming in the app.3Reviewtechradar.com/audio/wireless-headphones/nothing-headphone-a-reviewRead 15 October 2026The app has a low-lag mode for gaming.

Not available

Claimed latencyiMaker’s claimed delay for the stated connection and mode. Minimum claims and host restrictions belong in the source note.

ANothing Headphone (a)

Connection	Mode	Latency (ms)
Bluetooth	Game Mode on Nothing phones	120

Source1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Footnote 3: latency can be as low as 120 ms when paired with Nothing phones with Game Mode on. This is a minimum claim for Nothing phones only.

BSonos Ace Ultra

Not available

Compatibility

1 of 3 differ

Compatible platformsiPlatforms with a documented audio path. This does not imply every connection or microphone function works. Platform editions must be checked individually.

Android, iOS, Windows1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: dual-device connections on Android, Windows and iOS. Spec table: Android 5.1 and above, iOS 13 and above.

Android, iOS1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026The Sonos app and TV Audio Swap work on iOS and Android. Bluetooth works with any Bluetooth-enabled device.

Connection per platformiOnly explicitly documented playback paths for the exact model. Microphone support is separate. Leave unknown microphone support omitted. An Xbox and a PlayStation edition of one headset can connect differently, so it is per variant.

Not available

Not available

Official licence

Not available

Not available

Battery and charging

9 of 13 differ

Battery capacityiRated capacity of one headset battery. Do not use case, receiver or total multi-battery capacity.

1,060mAh1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Battery: 1060 mAh rechargeable lithium-ion.

1,060mAh1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026A 1060 mAh lithium-ion battery.

Swappable batteryiBattery can be exchanged by the user as part of normal operation. Service or recycling disassembly does not count.

No2Spec databaseifixit.com/Device/Nothing_Headphone_(a)Read 15 October 2026Specifications, Battery: User-replaceable No.

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Replace the parts. Keep the headphones. The ear cushions and battery are designed to be swapped out.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Power and Connectivity: Battery (replaceable). Replacement instructions are on the Sonos website.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026You can replace the headphones' battery yourself.

Batteries includediNumber of headset batteries supplied, including the one already installed.

Not available

11Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026One battery in the headphones.

Claimed battery lifeiMaker’s maximum playback time per stated connection, codec, ANC, spatial audio and lighting settings. Name the spatial processing mode and other conditions in the source note. Unknown settings stay omitted.

ANothing Headphone (a)

Connection	ANC	Codec	Hours (h)
Bluetooth	No	AAC	135
Bluetooth	Yes	AAC	75
Bluetooth	No	LDAC	90
Bluetooth	Yes	LDAC	62

Source1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Playback: AAC ANC off up to 135 h, ANC on up to 75 h, LDAC ANC off up to 90 h, ANC on up to 62 h. Footnote 2: the 135 h figure is at 50% volume, AAC, default settings and 25 C from the Nothing laboratory. Expert Reviews prints 60 h for LDAC with ANC and iFixit prints 62 h, so the maker table is followed. The table also gives talk time of 72 h ANC off and 50 h ANC on, which has no field.

BSonos Ace Ultra

Connection	ANC	Hours (h)
Bluetooth	Yes	35
Bluetooth	No	50

Source1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Up to 35 hours of listening time with Active Noise Cancellation or Aware mode on, at moderate volume. The Product Guide adds up to 50 hours with ANC off. Battery life depends on usage, settings and environmental factors.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Guide overview: listen up to 35 hours with Adaptive Noise Cancellation on, or up to 50 hours with ANC off. Spec section: 35 hours with ANC or Aware mode on.

Battery life (claimed, max)

135h=CalculatedFrom Claimed battery life

50h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

75h=CalculatedFrom Claimed battery life

35h=CalculatedFrom Claimed battery life

Battery life without ANC (claimed)

135h=CalculatedFrom Claimed battery life

50h=CalculatedFrom Claimed battery life

Charging port

USB-C1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Type-C wired charging.

USB-C2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Use the included USB-C cable and a compliant USB-C power supply, 7.5 W minimum (15 W recommended).

Full charge timeiPublished time to fully charge a depleted headset. In-use charging can take longer.

120min1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Charging: Type-C wired charging to full 2 hours.

180min1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026A full charge from 0% can take up to 3 hours. Stored as 180 minutes, the upper bound.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Full charge from 0% can require up to 3 hours.

Quick charge timeiCharge duration in the maker’s quick-charge claim. Read together with Quick charge playback.

5min1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Fast charging: 5 min charge.

3min1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Rapid charging provides up to 3 hours of listening time from a 3-minute charge starting at 0%.

Quick charge playbackiPlayback gained from Quick charge time. Charger power, codec, volume and ANC conditions belong in the source note.

8h1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: 5 min charge gives 8 hours with ANC off and 5 hours with ANC on. Footnote 2: ANC off, 50% volume, AAC, default settings, 25 C. The ANC-off figure is stored.

3h1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Rapid charging provides up to 3 hours of listening time from a 3-minute charge starting at 0%. The guide says rapid charging needs 15 to 30 C and a charger between 5 W and 12 W for top speed.

Use while charging

Yes13Reviewtrustedreviews.com/reviews/nothing-headphone-aRead 15 October 2026A full charge from flat takes 2 hours, but you can charge them while you're listening.

Yes2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026While Sonos Ace Ultra is charging, you can continue listening to a Bluetooth-connected device.

Charging dock or stand

Not available

Not available

Controls

5 of 6 differ

Controls

Volume wheel, Buttons, Slider1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table, Controls: Roller for volume and play, Paddle for tracks, Button, and an On/Off switch. The Paddle and Button are stored as buttons, the Roller as a volume wheel and the switch as a slider.

Buttons, Slider2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Content Key slides up and down for volume and presses for playback and calls. Noise Control button on the right cup. Power/Bluetooth button on the left cup.

Volume control

Wheel1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Roller: roll right or left for volume up or down.

Not available

Game and chat mixiBalances separate game and chat audio streams. Mixing Bluetooth and dongle source volume alone does not count. Supported platforms belong in the source note.

Not available

Not available

Remappable controlsiOn-device button, touch or dial functions can be reassigned. Changing EQ alone does not count.

Yes1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Footnote 5: Nothing Headphone (a) allows customisable controls. The Button functions are set in Nothing X.

Not available

Wear detection

No3Reviewtechradar.com/audio/wireless-headphones/nothing-headphone-a-reviewRead 15 October 2026No auto-pause feature (wearer detection).12Reviewexpertreviews.co.uk/technology/headphones-audio/nothing-headphone-a-reviewRead 15 October 2026The (1) have wear detection and the (a) do not.

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026The music pauses when you take off the headphones and resumes when you put them back on.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Sensors in the ear cups detect if you are wearing them. On by default.6Reviewtomsguide.com/audio/headphones/sonos-ace-reviewRead 14 October 2026Specs: Wear detection Yes.

Voice assistant

ChatGPT1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: the Button can start ChatGPT. Footnote 7 says the default on iOS and Android is an AI smart assistant.

Voice assistant of the connected device, such as Siri or Gemini1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Noise Control button on the right cup. Long press to activate your voice assistant.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Press and hold the Noise Control / Voice Control button to activate your device voice assistant, such as Siri or Gemini.

Comfort and build

9 of 11 differ

Headband type

Not available

Padded2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Adjustable headband with the right amount of padding. Man of Many mentions Rebound memory foam padding.

Headband material

Liquid silicone1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: form-fitting headband made of liquid silicone.

Not available

Frame material

Flexible steel arms with metal injection molded hinges and a glass-fibre reinforced nylon slider1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: flexible steel arms, Metal Injection Molding hinges and a sliding component of 55% glass fibre reinforced nylon. Trusted Reviews says the housings are plastic with steel hinges.

Stainless steel2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Finish: stainless steel. The stainless steel headband smoothly extends and stays securely in place.

Ear cup material

Plastic13Reviewtrustedreviews.com/reviews/nothing-headphone-aRead 15 October 2026Housings are all plastic apart from steel hinges. SoundGuys also calls the chassis mainly plastic.

Not available

Ear pad material

Memory foam with leatherette1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: memory foam ear cups. Trusted Reviews says the cushions are covered with leatherette over memory foam.13Reviewtrustedreviews.com/reviews/nothing-headphone-aRead 15 October 2026Ear cushions covered with a leatherette material with soft memory foam underneath.

Memory foam covered in vegan leather2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Finish lists vegan leather. Tom's Guide and Man of Many describe memory foam ear cushions. SoundGuys lists memory foam and synthetic leather.

Replaceable ear pads

Not available

Yes1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Ear cushions are designed to be swapped out. Ear cushions are sold as accessories.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Ear cushions can be easily replaced if they wear out over time.

Ear pad attachmentiHow a replacement ear pad attaches to the ear cup, not how the decorative outer cover attaches. A press-fit or snap-on pad counts as clip.

Not available

Magnetic2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Each cushion is securely held in place by magnets and can be removed with a light pull. It snaps into place when reattached.5Reviewwhathifi.com/headphones/sonos-ace-ultraRead 14 October 2026Ear pads attach magnetically and replacements cost about 40 GBP / $40.

Ear pad openingiUsable opening inside an ear pad, excluding the outer cushion. Depth is the internal space between pad surface and driver cover.

Not available

Not available

Ear tips included

Not available

Not available

Dust and water rating

IP521Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table and page text: IP52 dust and water resistance. Footnote 9 says the tests are Nothing laboratory results.

Not available

User-replaceable parts

Not available

Ear cushions, Battery1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026The ear cushions and battery are designed to be swapped out. Ear cushions $39 and a replacement battery kit $25 are sold by Sonos.2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Spec section: Battery (replaceable). Ear cushion replacement section.

Software

1 of 3 differ

Companion app

Nothing X1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Footnote 6: Nothing X app.

Sonos2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Sonos app. Settings, EQ, noise control and updates are in the app.

App platforms

Android, iOS1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Footnote 6: Nothing X is on Google Play and the iOS App Store.

Android, iOS2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Sonos app on iOS and Android. TV Audio Swap works on iOS and Android.

User firmware updates

Yes16Reviewheadphonecheck.com/test/nothing-headphone-aRead 15 October 2026Firmware updates can be installed directly through the Nothing X app.

Yes2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Sonos app Settings, About: check for software updates and see the current software version.

Dimensions and weight

2 of 2 differ

Headset weightiPublished headset mass without detachable cable or microphone when stated. A fixed cable remains included. Any unqualified maker weight is identified in the source note.

310g(10.9 oz)1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table: Headphones weight 310 G.

325g(11.5 oz)2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Details and Dimensions: Weight 0.72 lbs (325 g). The product page says 0.71 lbs (322 g). The guide is preferred over the product page. Tom's Guide, What Hi-Fi? and SoundGuys repeat 322 g.

Headset dimensionsiBody size with headband upright and ear cups in their normal wearing position. Width is across the head, height is top to bottom, and depth is front to back. Folded or flat-swivel dimensions are not substituted.

Width177Height190.4Depth78mm(7 × 7.5 × 3.1 in)1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Spec table labels: Height 177.0 mm, Width 78.0 mm, Depth 190.4 mm. Those labels do not fit a wearing orientation. A 78 mm width cannot be across the head. Tom's Guide lists 7 x 3.1 x 7.6 in. The values are stored as across the head 177.0, top to bottom 190.4 and front to back 78.0. The maker does not state the headband or cup position.

Width163Height193Depth84mm(6.4 × 7.6 × 3.3 in)2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Details and Dimensions: Height 7.60 in (193 mm), Width 6.42 in (163 mm), Depth 3.31 in (84 mm). The product page lists a single unit with ear cup width 90.8 mm and depth 45 mm, which are not stored.

Certifications

1 of 3 differ

Hi-Res Audio

Hi-Res Audio, Hi-Res Audio Wireless1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Page text: Hi-Res Audio certified for wired and wireless listening.

Not available

Communication certifications

Not available

Not available

FCC ID

Not available

Not available

Other certifications

Not available

Not available

In the box

3 of 3 differ

In the box

Headphone (a), Carry pouch, 3.5 mm audio cable (1.2 m), USB-C cable (1.2 m) for charging and USB audio, Quick start guide1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026In the box: Headphone x1, Carry pouch x1, 3.5 mm audio cable (1.2M) x1, USB-C cable (1.2M) x1 (charging and USB Audio), QSG x1.

Sonos Ace Ultra headphones, Travel case with removable cable pouch, USB-C to USB-C cable, USB-C to 3.5 mm cable, Quickstart Guide and legal and warranty information1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026Box contents: travel case, USB-C to USB-C cable, USB-C to 3.5 mm cable, Set Up Guide and legal and warranty information. The headphones themselves are included.

Cables includediSupplied playback, charging, dongle and adapter cables. A permanently attached headset cable is included and named as fixed.

ANothing Headphone (a)

Type	Length (m)	Count
3.5 mm audio cable	1.2	1
USB-C cable for charging and USB audio	1.2	1

Source1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026In the box list. Lengths 1.2 m each.

BSonos Ace Ultra

Type	Length (m)	Count
USB-C to USB-C cable	0.75	1
USB-C to 3.5 mm cable	1.2	1

Source1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026USB-C to USB-C cable 2.46 ft (0.75 m). USB-C to 3.5 mm cable 3.94 ft (1.2 m).2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026USB-C to USB-C cable 2.46 ft (0.75 m). USB-C to 3.5 mm cable 3.94 ft (1.2 m).

Carrying caseiSupplied carrying case or pouch. A retail carton does not count as a carrying case.

Soft1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026Carry pouch 270 x 230 x 15 mm, 30 g. Expert Reviews and Trusted Reviews describe a drawstring fabric pouch.

Not available

Links

Not compared

Product page

us.nothing.tech/products/headphone-a1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026

www.sonos.com/en-us/shop/sonos-ace-ultra1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026

Spec sheet

us.nothing.tech/products/headphone-a1Maker product pageus.nothing.tech/products/headphone-aRead 15 October 2026

www.sonos.com/en-us/shop/sonos-ace-ultra1Maker product pagesonos.com/en-us/shop/sonos-ace-ultraRead 14 October 2026The Tech Specs tab on the product page.

Manual

Not available

www.sonos.com/en-us/guides/sonosaceultra2Owner's manualsonos.com/en-us/guides/sonosaceultraRead 14 October 2026Sonos Ace Ultra product guide.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

0 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year7Maker product pageus.nothing.tech/pages/terms-of-salesRead 15 October 2026US store terms, section 6.8: Headphones and other electronic devices have a limited warranty of twelve (12) months. This is the US store and other regions can differ. The Amazon listing also says 1 year manufacturer.

1year10Maker product pagesonos.com/en-us/legal/terms-of-useRead 14 October 2026Section 10(a): Sonos warrants the Product for one (1) year after the date of original purchase against defects in materials and workmanship. US English terms. The Sonos warranty extension of 2024 excludes portable and wearable products.

Both are also in the API. Back to all headsets and headphones.