Headsets and headphones / Compare

Bowers & Wilkins Px7 S3 vs Sonos Ace Ultra

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Product A: Bowers & Wilkins

Px7 S3

75 of 161 known

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B

Product B: Sonos

Ace Ultra

71 of 161 known

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Only differences

ABowers & Wilkins Px7 S3

BSonos Ace Ultra

General

3 of 8 differ

Series

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

301020-54-00-308, 301020-67-00-308, 301020-66-00-308, 301020-83-00-308, 301020-84-00-3081Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026US store part number 301020-54-00-308 for Anthracite Black. The colour swatches carry 301020-67-00-308 (Canvas White), 301020-66-00-308 (Indigo Blue), 301020-83-00-308 (Frost Blue) and 301020-84-00-308 (Vintage Maroon).

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

Not available

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

24 April 20253Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Launch announcement from Worthing, UK, dated April 24, 2025. North American price and availability came later.

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 pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026In stock on the maker US store at $479, with dealer links.

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.

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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

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

$4495Press articletechradar.com/audio/wireless-headphones/good-news-the-five-star-wireless-headphones-we-rate-higher-than-the-sony-wh-1000xm6-are-finally-available-to-order-in-the-usRead 23 October 2026News dated May 21, 2025: US price $449, orders from bowerswilkins.com, shipping from June 10, 2025. US dollars before sales tax. The maker US page now lists $479.

$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.

€4296Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026Review of April 24, 2025: on sale in the UK and EU that day, €429 in the EU. Country and tax treatment are not stated, so it is the EU price as reported.

€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

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ColoursiThe maker's own colour names

Anthracite Black, Canvas White, Indigo Blue, Frost Blue, Vintage Maroon1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Finishes: Canvas White, Anthracite Black, Indigo Blue, Frost Blue, Vintage Maroon. The launch range was Anthracite Black, Canvas White and Indigo Blue. Frost Blue and Vintage Maroon came later.

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 pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Sold as high-performance noise-cancelling wireless headphones for music, films and games, with sound quality as the focus.

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

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Form factor

Over-ear1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Wearing style: Over-ear Noise Cancelling Headphones.

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.

Closed11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header: Enclosure Closed-Back, over-ear, wireless, noise cancelling, mic.

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

Wearing style

Headband4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026Describes a new headband and redesigned arm mechanism.

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.

Flat7Reviewexpertreviews.co.uk/technology/headphones-audio/bowers-wilkins-px7-s3-reviewRead 23 October 2026Build: the headphones fold flat only. The case is slimmer and semi-hard.

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.

Yes7Reviewexpertreviews.co.uk/technology/headphones-audio/bowers-wilkins-px7-s3-reviewRead 23 October 2026Fold flat only means the ear cups rotate flat. SoundGuys says the headphones lie flat in the case.8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Headphones lie flat in the case.

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

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

Not available

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Drivers and sound

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Driver type

Dynamic1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Drive units: 2 x 40mm dynamic full range bio cellulose driver.

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 pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Drive units: 2 x 40mm dynamic full range bio cellulose driver.

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.

11Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 20262 x 40 mm drive units across the two ear cups, so one per side.

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

Diaphragm material

Bio-cellulose1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Drive units: bio cellulose driver.

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.

Not available

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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

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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.

Not available

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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

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

Not available

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

Not available

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Max input power

Not available

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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.

96kHz2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet: USB audio up to 24 bits, 96 kHz.

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.

24bits2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet: USB audio up to 24 bits, 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

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

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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.

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

51Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Technical features: 5 band customisable EQ + TrueSound mode.

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

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Volume limit

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Spatial audio

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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.

Not available

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

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Head tracking

Not available

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

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Active noise cancelling

Yes1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Page title: noise-cancelling wireless headphones with advanced noise cancellation.

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 pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Microphones: 4 mics per earcup (1x FB + 2x FF). FB is a feedback microphone and FF is a feedforward microphone, so the ANC uses both.3Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Drive-unit microphones (feedback) and ambient microphones (feedforward) are both used.

Not available

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

61Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 20261 feedback and 2 feedforward microphones per earcup, which is 6 for ANC. The page counts 4 per earcup, 8 in total. The press launch says two microphones monitor the drivers and four monitor ambient noise.3Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Eight microphones in total: two measure each drive unit's output, four monitor ambient noise and two handle voice clarity. That gives six for ANC.7Reviewexpertreviews.co.uk/technology/headphones-audio/bowers-wilkins-px7-s3-reviewRead 23 October 2026Two ambient microphones plus one internal microphone per ear cup, and a pair of voice microphones.

Not available

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

Not available

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.

Not available

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ANC attenuation (claimed)

Not available

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Transparency mode

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 3.1: Ambient Pass-Through mode lets you hear outside sound without removing the headphones.3Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Modes are Off, Pass-Through and On, with a transparency mode in the app.

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

Not available

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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

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

Boosted bass sound signature. The bass is very emphasized and the treble slightly underemphasized against the RTINGS target.11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header, methodology v2.3, reviewed 2026-01-20: Sound Signature Boosted Bass. Test settings and the full curve are member-only and were not used.

Not available

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

7dB11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header: Bass Amount Very Emphasized (7 dB) against the RTINGS target curve.

Not available

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

-3dB11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header: Treble Amount Slightly Underemphasized (-3 dB) against the RTINGS target curve.

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

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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

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

Not available

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

Call quality is on par with competitors. The microphones reject some noise while keeping voice quality, but will not match a dedicated studio microphone.8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Review published 2025-08-13 and updated 2025-11-19. Mic demos in office, street, windy and reverberant settings. The reviewer calls call quality on par with competitors. No microphone measurements are given.

Not available

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

Not available

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

Not available

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

Not available

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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

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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.

ABowers & Wilkins Px7 S3

Connection	ANC	Hours (h)
Bluetooth	Yes	31.92

Source9Measurementsoundguys.com/bowers-and-wilkins-px7-s3-vs-apple-airpods-max-149910Read 23 October 2026SoundGuys test track of real music peaking at 75 dB SPL, ANC on, 31 hours 55 minutes. The article does not name the codec. The only wireless connection is Bluetooth. RTINGS gives 29 hours in its verdict text and does not state its settings in the public part.

BSonos Ace Ultra

Not available

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

31.92h=CalculatedFrom Measured battery life

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.

Not available

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Microphone

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

Built-in1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Page: 8 microphones in the ear cups. No boom.

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.

Not available

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.

81Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Microphones: 8 mics total, 4 per earcup. The voice-only count is not stored. The page says all mics are used for talk, while the launch coverage names two voice microphones.

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.

Not available

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

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Connectivity

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

Bluetooth, USB, Analog2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Bluetooth, the USB-C to USB-C cable (USB audio) and the USB-C to 3.5 mm cable (analog source).

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 TRS2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 7.1.1: the supplied cable has a 3.5 mm stereo jack for a source with an analog output.

Not available

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

USB-C2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 7.1.1: the audio cable plugs into the USB-C socket 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 pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026In box: 1.2m USB-C to 3.5mm stereo jack audio cable and 1.2m USB-C to USB-C cable.

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-C2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026USB-C socket on each earcup, one for the charging and USB cable and one for the audio cable.

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.

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 7.1.2: the headphones work as a USB sound output when connected to a computer with the USB-C cable.

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.

No2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Note in 7.1.1: the headphones must have enough charge and be on to play from an analog source.6Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026No option for wired listening when the battery is dead.

Not available

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

None2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026No dongle or receiver in the box.

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.

Not available

Not available

Bluetooth

5.31Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Technical features: Bluetooth 5.3 with aptX Lossless technology.

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.

SBC, AAC, aptX Classic, aptX HD, aptX Adaptive, aptX Lossless1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Bluetooth codecs: aptX Lossless, aptX Adaptive, aptX HD, aptX Classic, AAC, SBC. SoundGuys says iOS uses AAC only and Android can use the aptX codecs.

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.

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet lists multipoint connection. Section 5.3: paired with up to two devices, with audio from one at a time.

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.

22Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 5.3: up to two devices, audio plays from one at a time.

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 Pair2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 5.1.3: pairs with compatible Android devices using Google Fast Pair.

Not available

Base station

Not available

Not available

Latency

None of 2 known

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

Not available

Not available

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

Not available

Not available

Compatibility

2 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.

iOS, Android, Windows, macOS2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Sections 5.1.1 and 5.1.2: iPhone, Mac, PC and Android pairing. The app is for iOS and Android.

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.

ABowers & Wilkins Px7 S3

Platform	Connection
iOS	Bluetooth
Android	Bluetooth
Windows	Bluetooth
macOS	Bluetooth
macOS	USB

Source2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Bluetooth pairing for iPhone, Mac, PC and Android. Section 7.1.2 adds USB audio and a Mac setup note. Microphone use per platform is not stated.

BSonos Ace Ultra

Not available

Official licence

Not available

Not available

Battery and charging

10 of 13 differ

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

Not available

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.

No8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Earpads and headband padding are replaceable. The battery and USB-C port are not.

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.

ABowers & Wilkins Px7 S3

Connection	ANC	Hours (h)
Bluetooth	Yes	30

Source1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 202630 hours playback. The manual says 30 hours is with noise cancellation on at medium volume.2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Intro: up to 30 hours of wireless streaming with noise cancellation on at medium volume levels. Bluetooth codec is not stated.

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)

30h=CalculatedFrom Claimed battery life

50h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

30h=CalculatedFrom Claimed battery life

35h=CalculatedFrom Claimed battery life

Battery life without ANC (claimed)

Not available

50h=CalculatedFrom Claimed battery life

Charging port

USB-C2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 4: USB-C socket on the left earcup.

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.

120min2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 4: wait up to 2 hours for a full charge.

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.

15min1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 202630 hours playback, 7 hours with a 15 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.

7h1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 202630 hours playback, 7 hours with a 15 min charge.

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

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 4: the headphones can be used while charging.

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

4 of 6 differ

Controls

Buttons2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Right earcup has volume up, volume down and a multifunction button. The left earcup has a power slider and a quick action button.

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

Buttons2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Volume up and volume down buttons on the right earcup.

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.

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6.2.5: the quick action button can be customised in the app.

Not available

Wear detection

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 3.3: wear sensors on both sides pause playback and enter low power standby when removed.

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

Voice assistant of the connected device2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 3.2: the quick action button can call the voice assistant of the connected device.

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

6 of 11 differ

Headband type

Padded4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026The headband is described as nicely padded, with a new headband and arm mechanism. The inner section of the headband can be replaced.

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

Fabric outer, memory foam padding under synthetic leather4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026Fabric around the outside of the headband and earcups, with pleather over memory foam at the contact points.

Not available

Frame material

Not available

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

Plastic with fabric finish10Spec databasesoundguys.com/product/bowers-and-wilkins-px7-s3Read 23 October 2026Spec table: ear cups pleather over memory foam. Tom's Guide describes premium-feeling plastic and the maker lists a fabric finish.

Not available

Ear pad material

Memory foam with synthetic leather4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026Pleather over memory foam contact points.6Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026Memory foam earcups with soft synthetic alternatives, no leather.

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

Yes4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026The inner section of the headband and the earpads can be removed and replaced by a trained service engineer, not by the user.8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Earpads and headband padding are replaceable.

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

Not available

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

2 of 3 differ

Companion app

Bowers & Wilkins Music2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6: Bowers & Wilkins Music 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

iOS, Android2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6: free for iOS and Android.

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

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6.3: software updates are delivered through the 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.

300g(10.6 oz)1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Net weight 300g (without carry case).

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.

Not available

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

Not available

Not available

Communication certifications

Not available

Not available

FCC ID

Not available

Not available

Other certifications

Apple MFi (Made for iPhone)2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet technical features: Apple MFi Made For iPhone.

Not available

In the box

3 of 3 differ

In the box

Px7 S3 wireless over-ear headphones, Carry case, USB-C to USB-C charging cable, USB-C to 3.5 mm audio cable, Documentation1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026In box accessories: 1.2m USB-C to 3.5mm stereo jack audio cable, 1.2m USB-C to USB-C cable, carry case. The manual also lists the documentation.

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.

ABowers & Wilkins Px7 S3

Type	Length (m)	Count
USB-C to USB-C cable	1.2	1
USB-C to 3.5 mm stereo jack audio cable	1.2	1

Source1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Both 1.2 m cables are listed under in box accessories.

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.

Hard1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Carry case is in the box. Tom's Guide calls it a hard case. Expert Reviews calls it semi-hard.6Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026Verdict lists the best hard case yet. The case has a magnetically closing section for the cables.

Not available

Links

Not compared

Product page

www.bowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.html1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 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

Not available

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

werner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdf2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Owner's manual, Spanish copy hosted by a retailer, with the data sheet on the last page. An English copy exists on the maker support site.

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

1 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.

Not available

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.