Headsets and headphones / Compare

Bose QuietComfort Ultra Headphones (2nd Gen) vs Sonos Ace Ultra

A

Product A: Bose

QuietComfort Ultra Headphones (2nd Gen)

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B

Product B: Sonos

Ace Ultra

71 of 161 known

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Only differences

ABose QuietComfort Ultra Headphones (2nd Gen)

BSonos Ace Ultra

General

4 of 8 differ

Series

QuietComfort1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Product title QuietComfort Ultra Headphones (2nd Gen), family QuietComfort. Exact second generation product page.

Not available

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

443987, 890101-0100, 890101-0200, 890101-0300, 890101-0400, 890101-0500, 890101-0110, 890101-01202Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Model number: 443987

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

0017817859585, 0017817859592, 001781785956110Retailer pageaxro.com/en/boseRead 30 September 2026Public product and variant cards: OEM 890101-0100 EAN 0017817859585, 0300 EAN 0017817859592, 0200 EAN 0017817859561. No login or price content used.

Not available

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

10 September 20257Press releasebose.com/pressroom/bose-unveils-the-next-generation-of-the-quietcomfort-ultra-headphonesRead 30 September 2026Official launch announcement dated September 10, 2025.

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Add to Cart on 2026-09-28

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.

Bose QuietComfort Ultra Headphones7Press releasebose.com/pressroom/bose-unveils-the-next-generation-of-the-quietcomfort-ultra-headphonesRead 30 September 2026Bose Unveils the Next Generation of the QuietComfort Ultra Headphones. The 2nd Gen deliver a new level of performance over their predecessor.

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.

$4497Press releasebose.com/pressroom/bose-unveils-the-next-generation-of-the-quietcomfort-ultra-headphonesRead 30 September 2026US launch release: retailing for $449.

$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.

€4498Press releasebose.fr/pressroom/bose-unveils-the-next-generation-of-the-quietcomfort-ultra-headphonesRead 8 October 2026Opening paragraph: available September 10 for 449 EUR.

€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.

US1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026US manufacturer storefront is an explicit US sale listing.

Not available

ColoursiThe maker's own colour names

Black, White, Midnight Violet, Desert Gold, Driftwood Sand, Cherry Chocolate, Olive Green1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Colours sold on bose.com (US) on 2026-09-28. What Hi-Fi lists White as White Smoke. Cherry Chocolate and Olive Green are later additions

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Sold under Headphones > Noise Cancelling Headphones, for music and video listening. Not a gaming headset

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Technical Specifications, Headphone Fit: Around Ear Circumaural.

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.

Closed6Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-headphones-2nd-genRead 30 September 2026Enclosure: Closed-Back

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

Wearing style

Headband1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Headband, Band Style/Fit: On Head Adjustable

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.

Flat and inward2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Rotate both earcups inward to lay flat, slide up and fold the left earcup toward the headband

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.

Yes2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Store the Headphones chapter: rotate both earcups so they lie flat. Fold each earcup toward the headband into 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

Not available

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

Not available

Not available

Drivers and sound

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Driver type

Dynamic17Reviewtechradar.com/news/best-bose-headphonesRead 8 October 2026The best Bose headphones overall section, item 2 explicitly titled QuietComfort Ultra Headphones (2nd Gen), Specifications: Driver type Dynamic driver. Adjacent original-generation and earbud sections are not inherited.

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.

35mm14Reviewtechgearlab.com/reviews/audio/wireless-headphones/bose-quietcomfort-ultra-2nd-gen-headphonesRead 30 September 2026Compare table: Driver Size 35 mm for Bose Quiet Comfort Ultra 2nd Gen. Maker does not publish it.

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

Not available

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

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.

Not available

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.

48kHz1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026USB audio at 16-bit, 44.1 kHz or 48 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.

16bits1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026FAQ What is USB audio: USB-C receives 16-bit, 44.1 kHz or 48 kHz from compatible source files.

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.

Not available

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.

32Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Battery test note: 3-band EQ set to zero

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

Not available

Not available

Volume limit

Not available

Not available

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.

Bose Immersive Audio, Cinema Mode, 5.1 Spatial Audio1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Features, Multiple Listening Modes: Bose Immersive Audio and Cinema Mode. This spatializes music and video and is not host codec support.16Maker product pagesupport.bose.com/article/quietcomfort-ultra-headphones-2nd-gen-using-le-audioRead 8 October 20265.1 Spatial Audio section: optional beta LE Audio must be enabled, with a compatible Android host and true 5.1-channel content. Headphones process source 5.1 audio rather than upmixing stereo. Existing Bose Immersive Audio and Cinema Mode are separate processing modes.

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

Yes2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Immersive audio Still setting keeps the speakers in place when you move your head

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Mode descriptions: Quiet engages full 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.

Hybrid13Retailer pagebhphotovideo.com/c/product/2002073-REG/bose_890101_0120_quietcomfort_ultra_wireless_noise.htmlRead 30 September 2026Key Features: Hybrid Noise-Canceling Technology. Maker count/type not explicitly stated.

Not available

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

Not available

Not available

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

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Active Sense automatically adjusts noise cancellation to the environment in Aware mode

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

Not available

ANC attenuation (claimed)

Not available

Not available

Transparency mode

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Mode descriptions: Aware lets outside sound in. Active Sense automatically adjusts cancellation. It is not a manually adjustable ambient gain.

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

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

Yes2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Custom modes offer noise cancellation or wind block

Not available

Measured

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

Warm. Emphasized bass and underemphasized treble. Minimal peaks and dips except some treble fluctuations. Low harmonic distortion.6Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-headphones-2nd-genRead 30 September 2026Public Audio Reproduction Accuracy: fuller bass, mostly flat mids, warmer treble, minimal peaks and dips except treble fluctuations, low distortion. The visible Sound Profile descriptors of 3 dB and -4 dB are separately sourced.

Not available

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

3dB6Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-headphones-2nd-genRead 30 September 2026Test bench 2.3. Emphasized (3 dB)

Not available

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

-4dB6Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-headphones-2nd-genRead 30 September 2026Test bench 2.3. Underemphasized (-4 dB)

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

Decent. Mostly flat response in the voice range gives fairly natural speech. Noise handling is satisfactory but does not fully remove background noise.6Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-headphones-2nd-genRead 30 September 2026Public Our Verdict, Microphone: mostly flat voice-range response and natural speech. Noise rejection prioritizes voice but does not eradicate environmental noise.

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.

ABose QuietComfort Ultra Headphones (2nd Gen)

Connection	ANC	Hours (h)
Bluetooth	Yes	27.2

Source5Reviewsoundguys.com/bose-quietcomfort-ultra-headphones-2nd-gen-review-boring-refresh-or-notable-upgrade-144545Read 30 September 2026Battery section: standardized ANC-on rundown 27 h 12 min. RTINGS 37 h row removed because ANC state is not public.

BSonos Ace Ultra

Not available

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

27.2h=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

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Technical Specifications, Microphones: Built-in Microphone.

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.

42Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Four microphones for phone calls, two per earcup. Bose page: 1 inside and 4 outside each earcup in total

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.

Not available

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

Yes15Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 8 October 2026Page 22, Noise cancellation while on a call: Self voice is activated during calls to let the wearer hear their own voice.

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

Yes15Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 8 October 2026Page 22: adjust Self voice in the Bose app Settings menu. Noise-cancellation adjustment is a separate control.

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

12 of 20 differ

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

Bluetooth, Analog, USB1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026FAQ USB audio and the package analog cable, Technical Specifications Wireless Connectivity Bluetooth. Three audio paths: Bluetooth, analog, USB-C.

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 TRS5Reviewsoundguys.com/bose-quietcomfort-ultra-headphones-2nd-gen-review-boring-refresh-or-notable-upgrade-144545Read 30 September 20263.5mm to 2.5mm TRS cable

Not available

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

2.5 mm2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 20262.5 mm AUX audio port on the left 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.

Not available

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Technical Specifications, Charging Interfaces: USB C PORT. The FAQ says USB audio uses the same connector.

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026FAQ What is USB audio: USB-C receives audio from compatible source files.

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 manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026The headphones must be powered on to use the audio cable

Not available

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

None2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Bluetooth only, no 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.

9m1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Bluetooth Range 30 ft. The owner's guide gives 30 ft (9 m)

Not available

Bluetooth

5.41Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Technical Specifications, 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.

SBC, AAC, aptX Adaptive, LC32Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026aptX Adaptive with Snapdragon Sound devices. SBC and AAC from What Hi-Fi3Reviewwhathifi.com/headphones/bose-quietcomfort-ultra-headphones-2nd-genRead 30 September 2026Bluetooth SBC, AAC, aptX Adaptive. SoundGuys adds aptX Lossless and aptX Low Latency within the aptX Adaptive family7Press releasebose.com/pressroom/bose-unveils-the-next-generation-of-the-quietcomfort-ultra-headphonesRead 30 September 2026SBC, AAC, apt X Adaptive. Lossless and low latency are adaptive modes requiring Snapdragon Sound-certified source devices.16Maker product pagesupport.bose.com/article/quietcomfort-ultra-headphones-2nd-gen-using-le-audioRead 8 October 2026Existing SBC, AAC and aptX Adaptive remain Classic Audio codecs. LC3 is explicitly used by the optional beta LE Audio mode on supported Android 13 or newer devices. Bose app setting and headphone restart required.

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.

Yes16Maker product pagesupport.bose.com/article/quietcomfort-ultra-headphones-2nd-gen-using-le-audioRead 8 October 2026Exact-model Using LE Audio support article, checked October 8, 2026: currently a beta feature. Opt in using Bose app Settings > Bluetooth Connections > Use LE Audio When Available. Selected Android 13 or newer hosts with Bluetooth 5.2 or newer required. This is conditional current support, not a launch or default-mode claim.

Not available

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

Yes16Maker product pagesupport.bose.com/article/quietcomfort-ultra-headphones-2nd-gen-using-le-audioRead 8 October 2026Same beta LE Audio article explicitly describes receiving shared or public Auracast broadcasts through these headphones. Requires compatible Android host and LE Audio enabled. Voice Assistant and Spotify Tap shortcuts are unavailable in LE Audio mode.

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 manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Bluetooth Connections / Connect another device: can actively connect to two devices at a time, multipoint enabling setting described.

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 manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Bluetooth Connections / Connect another device: can actively connect to two devices at a time, multipoint enabling setting described.

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

Paired devices remembered

62Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Up to six devices in the device list, two connected at a time

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 manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Bluetooth Connections / Android using Fast Pair: a compatible Android device receives a pairing prompt.

Not available

Base station

Not available

Not available

Latency

1 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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Gaming Mode with Snapdragon Sound sources

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

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.

Not available

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

8 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.

No2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Safety/regulatory pages: battery removed only by a qualified professional.

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.

ABose QuietComfort Ultra Headphones (2nd Gen)

Connection	ANC	Spatial audio	Hours (h)
Bluetooth	Yes	No	30
Bluetooth	Yes	Yes	23
Bluetooth	No	No	45

Source1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Up to 30 hours (23 with Immersive Audio). 45 h with noise cancellation and immersive audio off is from the owner's guide2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Page 36: 30 h with ANC on and Immersive Audio off, 23 h with ANC and Immersive Audio on, 45 h with both off. Rows are stored with their Immersive Audio setting.

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)

45h=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)

45h=CalculatedFrom Claimed battery life

50h=CalculatedFrom Claimed battery life

Charging port

USB-C1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Technical Specifications, Charging Interfaces: USB C PORT. The FAQ says USB audio uses the same connector.

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.

180min2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Allow up to 3 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.

15min1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Product Comparison, Quick Charge: 15 min = 3 hrs. Immersive Audio conditions are separately qualified in the manual.

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.

3h1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Comparison table: 15 min = 3 hrs. The owner's guide test note gives 2.5 hours2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Page 36: main text promises up to 3 h from 15 min. Test footnote mentions older 2.5 h, inconsistent. Current product comparison also explicitly states 3 h.

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

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026FAQ Can I charge while wearing: yes, from a USB-C powered source. It may charge slower during use. Features list listening 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

Buttons, Touch1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026FAQ controls: Bluetooth and power button, multifunction button and capacitive volume and shortcut strip on the right cup.

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

Touch1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Capacitive volume strip 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.

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Touch and hold the volume strip for a user-configurable shortcut

Not available

Wear detection

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026On-head/off-head detection

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

Siri, Google Assistant, Bixby1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Device voice assistants, such as Siri, Google, and Bixby

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

5 of 11 differ

Headband type

Padded14Reviewtechgearlab.com/reviews/audio/wireless-headphones/bose-quietcomfort-ultra-2nd-gen-headphonesRead 30 September 2026Comfort section: similar padding on headband cushions top of head.

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

Pleather1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Pleather Headband, Metallic Polished Yokes

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

Not available

Not available

Ear pad material

Protein leather1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Technical Specifications, Ear Cushion Material: Protein 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

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Ear Cushion Style/Fit: Removable Cushion. Replacement parts via Bose customer service

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

1 of 3 differ

Companion app

Bose app1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Bose app named in Technical Specifications and Support download links for Google Play and Apple Store.

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 pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Bose app named in Technical Specifications and Support download links for Google Play and Apple 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

Yes2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Updates through the Bose app or btu.Bose.com

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.

264.4g(9.3 oz)1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Unpackaged headphone 0.583 lb, converted

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

0 of 3 differ

Hi-Res Audio

Not available

Not available

Communication certifications

Not available

Not available

FCC ID

A944439872Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026FCC ID: A94443987 | IC: 3232A-443987

Not available

Other certifications

Not available

Not available

In the box

3 of 3 differ

In the box

Bose QuietComfort Ultra Headphones (2nd Gen), Carry case, 3.5 mm to 2.5 mm audio cable, USB-C (C to C) cable (39"), Safety sheet1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026What’s in the Box: headphones, carry case, 3.5 mm to 2.5 mm audio cable, USB-C C to C 39 inch cable, safety sheet.

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.

ABose QuietComfort Ultra Headphones (2nd Gen)

Type	Length (m)	Count
USB-C to USB-C	0.99	1
3.5 mm to 2.5 mm audio cable	Not available	1

Source1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026USB-C (C to C) cable 39 inches, converted

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.

Hard4Reviewwhathifi.com/headphones/wireless-headphones/sony-wh-1000xm6-vs-bose-quietcomfort-ultra-headphones-2nd-gen-which-flagship-wireless-over-ears-are-bestRead 30 September 2026Compact hard-shell carry case

Not available

Links

Not compared

Product page

www.bose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.html1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026Product title QuietComfort Ultra Headphones (2nd Gen), family QuietComfort. Exact second generation product page.

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

assets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdf2Owner's manualassets.bosecreative.com/m/25e14a61f0feef02/original/897194_OG_QCUH2-HEADPHONEARN_EN.pdfRead 30 September 2026Owner’s Guide cover QuietComfort Ultra Headphones (2nd Gen), document 897194. Public complete PDF opened.

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.

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Warranty

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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.

1year1Maker product pagebose.com/p/headphones/bose-quietcomfort-ultra-headphones-2nd-gen/QCUH2-HEADPHONEARN.htmlRead 30 September 2026US: Bose 1-Year Limited Warranty

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.