Headsets and headphones / Compare

CMF Headphone Pro vs Nothing Headphone (a)

A

Product A: CMF

Headphone Pro

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B

Product B: Nothing

Headphone (a)

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Only differences

ACMF Headphone Pro

BNothing Headphone (a)

General

5 of 8 differ

Series

Not available

Not available

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

B175, 69744342267221Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026Original manufacturer FCC manual identifies B175. Current US maker variant payload labels Dark Grey SKU 6974434226722. The numeric SKU is not stored as a GTIN without a barcode label.26Maker spec sheet (PDF)s3.zoommer.ge/site/certificate/nothing-cmf-headphone-pro.pdfRead 8 October 2026The signed original maker EU Declaration of Conformity identifies physical model B175 and battery M653035. Regulatory model identity is independent of the US color SKU. The signature date is not a retail release date.

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

GTIN / EAN

Not available

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

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

29 September 202518Reviewsoundguys.com/the-cmf-headphone-pro-packs-high-end-specs-for-a-low-price-tag-145307Read 8 October 2026The September 29, 2025 launch report documents the announcement and separates UK/EU same-day availability from October 7 US availability. The partner press release corroborates the regional sales dates.

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

Status

Available1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact Dark Grey US variant payload states availableForSale true.

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

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

Not available

Not available

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

Not available

Not available

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

$9916Press releasestorage.mfn.se/194a0e7c-3d3b-4dc0-bde1-0e70c39715f9/audiodo-and-cmf-by-nothing-expand-partnership-with-new-headphone-pro.pdfRead 8 October 2026The September 30, 2025 Audiodo maker-partner release expressly lists USD 99 and US sales beginning October 7, 2025. Current retail prices and EU regional pricing are not substituted.

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

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.

Not available

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

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

US1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The current US maker store offers the exact Dark Grey reference.

Not available

ColoursiThe maker's own colour names

Dark Grey1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The reference is the original Dark Grey headset with its fitted Dark Grey cushions. Other headset finishes and separately sold cushion colors are excluded.

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

Segment

Music1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker positions the product for music listening and audio playback.

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

Design

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Form factor

Over-ear1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explicitly describes its first over-ear headphones.

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

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

Closed11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact Acoustic Design field states Closed-back. Tom's Guide specifications corroborate this.

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

Wearing style

Headband1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker comfort section describes the adjustable headband. The original guide documents adjustment by sliding the arms.

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

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

Flat12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact review states that the headphones rotate flat for storage but do not fold inward.

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

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

Yes12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact design discussion explicitly describes flat rotation of the ear cups.

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

RGB lighting

Not available

Not available

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

Not available

Not available

Drivers and sound

7 of 20 differ

Driver type

Dynamic11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact product specifications explicitly state Dynamic driver. Voice-coil material alone is not used as transducer-type proof.

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

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

40mm1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Drivers table and Packed with Power section state 40 mm. The 16.5 mm copper voice coil is not a driver diameter.

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

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

Not available

Not available

Diaphragm material

PEN+PU dome with nickel plating1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Diaphragm table states PEN+PU dome material and nickel plating. Magnet material is not stated.

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

Magnet

Not available

Not available

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

Min20 HzMax20 kHz11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact product specifications state 20 to 20,000 Hz acoustic frequency response. Tom's Guide independently labels the same frequency response. No mode, tolerance, or test level is stated. The maker's ambiguous RF label is not used as transmission bandwidth proof.

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

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.

16Ω11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact product specifications state 16 ohms. The Tom's Guide specification table agrees. Frequency and powered/passive measurement state are unspecified. Unverified comparison sites give conflicting figures and are excluded.

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

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.

Not available

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

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

Not available

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

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.

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact maker Personal Sound feature uses Audiodo to create a hearing profile through a three-minute test in Nothing X. The resulting profile is stored directly on the headphones and remains applied across connected devices. This is hearing-test personalization, separate from the manual three-band equalizer and Energy Slider.

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

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.

312Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact reviewer reports a three-band custom EQ in Nothing X. Firmware 1.0.1.40. No advanced Headphone (1) parametric EQ is transferred.

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

EQ presets

Pop, Rock, Electronic, Enhance Vocals, Classical20Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact equalizer support article names five default profiles: POP, ROCK, ELECTRONIC, ENHANCE VOCALS, and CLASSICAL. Custom mode is not counted as a named preset. Marketing prose calls six preset EQs but does not name a sixth.

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

Volume limit

Not available

Not available

Spatial audio

1 of 3 differ

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

Static Spatial Audio: Cinema mode, Static Spatial Audio: Concert mode1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explicitly names Static Spatial Audio with Cinema and Concert modes. These are supported headphone processing modes. No Dolby license or dynamic head tracking is inferred.

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

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

Not available

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

Noise cancelling

3 of 10 differ

Active noise cancelling

Yes5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact support article explicitly confirms Active Noise Cancellation.

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

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

Hybrid1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Noise Cancellation Type table states Hybrid ANC.

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

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

Not available

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

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

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explains automatic movement between strong, moderate, and light cancellation based on surroundings. Adaptive is not counted as an extra manual strength level.

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

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

315Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact ANC discussion names Low, Mid, High, and Adaptive within ANC On. Only the three fixed strength levels are counted. Adaptive, Transparency, and Off are excluded.

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

ANC attenuation (claimed)

40dB5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact ANC support article states up to 40 dB. Frequency, weighting, and test method for this maximum are unspecified. The technical table also lists 2000 Hz as Frequency range, which does not establish a measurement frequency. The separate 99% marketing limit is not converted to dB.

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

Transparency mode

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker expressly documents Transparency Mode to hear surroundings.

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

Adjustable transparency

Not available

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

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

Not available

Not available

Wind noise reduction

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Noise Cancellation Features table states Wind Noise Conduction Mesh. This is a physical mesh feature, not an inferred selectable wind-processing mode.

Not available

Measured

5 of 21 differ

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

Changing the bass slider from minimum to maximum increases low-frequency output. The reviewer reports upper-frequency roll-off above about 8 kHz.12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026SoundGuys compares minimum and maximum bass-slider responses against its preference curve. Firmware 1.0.1.40. Host and codec are unspecified. The reported approximately 8 dB slider difference is not converted into a target-relative averaged bass metric.

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

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Recorded calls remain intelligible, but speech sounds unnatural and includes some pops and crackles.12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact reviewer reports intelligible speech and noise rejection with some pops and crackles. Recordings cover ideal, office, street, wind, and reverberant conditions. Firmware 1.0.1.40. Host, codec, and call processing settings are unspecified.

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

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.

ACMF Headphone Pro

ANC	Hours (h)
Yes	43.15
Yes	49.5

Source12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026First row: SoundGuys standardized test measured 43 hours 9 minutes with ANC on. Firmware 1.0.1.40, one-week supplied review unit. Connection, host, codec, playback level, and ANC strength are unspecified. Second row has a separate TechRadar source below.14Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026TechRadar depleted a full battery and measured 49.5 hours with ANC enabled during its four-week review. Its source devices include MacBook Pro, iPhone 15 Pro Max, and FiiO M15S, but the exact battery-test connection, codec, volume, ANC strength, and firmware are unspecified. The separate row is not pooled with SoundGuys.

BNothing Headphone (a)

Not available

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

49.5h=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

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

Microphone

4 of 16 differ

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

Built-in6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The controls and call documentation describe the on-headphone microphone, including its configurable on/off function. No detachable boom is supplied.25Reviewrtings.com/headphones/reviews/cmf/headphone-proRead 8 October 2026The exact public Office Work verdict explicitly describes an integrated microphone. No boom or in-line microphone is substituted.

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

Microphone element

Not available

Not available

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

Not available

Not available

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

31Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The feature table states a three-microphone ENC architecture for calls. Its separate five-microphone total is not substituted for this voice count or an unproven ANC count.

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

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.

528Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact maker Noise Cancellation technical table explicitly states 5 MICS TOTAL. This is the complete physical headset total. The separate three-microphone ENC call architecture remains a voice-role count, and no ANC count is derived from those overlapping roles.

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

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

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

Flip to mute

Not available

Not available

Mute button

Yes6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The support controls list explicitly includes Mic on/off as an optional configurable button function on all platforms. This requires selecting the function in the app.

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

No13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact Don't buy section explicitly says the product lacks sidetone for hearing your own voice during calls.

Not available

Adjustable sidetone

Not available

Not available

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

Not available

Not available

Connectivity

6 of 20 differ

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

Analog, Bluetooth5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Audio formats and wired connection articles document Bluetooth and analog AUX playback. USB-C is charging only.

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

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

Not available

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

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

3.5 mm10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original guide expressly labels the left ear cup 3.5 mm Audio In.

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

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

1.2m1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker package inventory contains only the supplied 1.2 m analog cable. The reviewer's approximate 2.7-foot cable description does not override the manufacturer claim.

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

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-C10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original English Quick Start Guide identifies USB-C Charge In on the right ear cup.

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

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.

No5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact wired connection article expressly says 3.5 mm aux-in is supported and USB-C Audio is not.

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

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.

No13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact review explicitly states that wired 3.5 mm listening requires the headphones powered on and does not work passively.

Not available

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

Not available

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

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

Not available

Not available

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

10m1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Connection range table states 10 m. Indoor or line-of-sight test conditions are not specified. The Tom's Guide generic Bluetooth 800-foot statement is excluded.

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

Bluetooth

5.45Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Bluetooth version article states Bluetooth 5.4.

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

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

SBC, AAC, LDAC5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Audio formats article expressly lists SBC, AAC, and LDAC. iOS lacks LDAC support according to the separate LDAC instructions.6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The exact LDAC instructions state 96 kHz, 24-bit, and 990 kbps for Bluetooth streaming with a compatible Android phone and high-quality audio enabled. Higher-bitrate LDAC recommends disabling Dual Connection. These limits apply to LDAC Bluetooth playback. The headset does not support USB-C cable audio.

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

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.

Yes6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The exact Dual Connection instructions document two simultaneous Bluetooth source connections with audio switching. This is disabled by default and requires enabling in Nothing X.

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

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

26Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The instructions repeatedly specify two connected devices. A third device can preempt one connection. This is not three simultaneous devices or pairing memory.

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

Paired devices remembered

Not available

Not available

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

Not available

Not available

Fast pairing

Google Fast Pair, Microsoft Swift Pair23Maker product pagesupport.nothing.tech/hc/en-us/articles/38910344910225-Does-CMF-Headphone-Pro-support-Google-Fast-PairRead 8 October 2026The exact product support article explicitly confirms the named quick-pairing feature. Google Fast Pair needs a compatible Android source. Microsoft Swift Pair is the Windows route. Neither adds USB audio.24Maker product pagesupport.nothing.tech/hc/en-us/articles/38910328918545-Does-CMF-Headphone-Pro-support-Mircosoft-Swift-PairRead 8 October 2026The exact product support article explicitly confirms the named quick-pairing feature. Google Fast Pair needs a compatible Android source. Microsoft Swift Pair is the Windows route. Neither adds USB audio.

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

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.

Yes7Maker product pagesupport.nothing.tech/hc/en-us/articles/38910343614737-Does-CMF-Headphone-Pro-support-low-latency-modeRead 8 October 2026The exact support article confirms low-latency mode.

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

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

ACMF Headphone Pro

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

Source7Maker product pagesupport.nothing.tech/hc/en-us/articles/38910343614737-Does-CMF-Headphone-Pro-support-low-latency-modeRead 8 October 2026The maker states less than 120 ms when connected to a Nothing Phone in Game Mode. The stored value is the upper bound of that claim, not a measured result. Codec and firmware are unspecified. Generic analog zero-latency reviewer prose is not stored as an end-to-end result.

BNothing Headphone (a)

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

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

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.

Android, iOS, Windows, macOS20Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026Exact maker compatibility support names Android 6.0 or later and iOS 13 or later. Swift Pair support and exact SoundGuys setup instructions establish Windows Bluetooth. The exact Tom's Guide reviewer listened through the supplied analog cable on a MacBook Air M2. No console route is inferred from a physical jack.21Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026Exact maker compatibility support names Android 6.0 or later and iOS 13 or later. Swift Pair support and exact SoundGuys setup instructions establish Windows Bluetooth. The exact Tom's Guide reviewer listened through the supplied analog cable on a MacBook Air M2. No console route is inferred from a physical jack.

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

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.

ACMF Headphone Pro

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes
Windows	Bluetooth	Not available
macOS	Analog	No

Source20Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026Android/iOS Bluetooth playback and voice calls are explicitly documented by maker compatibility and controls articles. Windows Bluetooth is documented by exact Swift Pair and reviewer pairing instructions. The exact Tom's Guide reviewer used analog playback on a MacBook Air M2 and explains that the supplied cable does not carry headphone microphone calls. Unknown Windows microphone behavior is omitted.21Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026Android/iOS Bluetooth playback and voice calls are explicitly documented by maker compatibility and controls articles. Windows Bluetooth is documented by exact Swift Pair and reviewer pairing instructions. The exact Tom's Guide reviewer used analog playback on a MacBook Air M2 and explains that the supplied cable does not carry headphone microphone calls. Unknown Windows microphone behavior is omitted.

BNothing Headphone (a)

Not available

Official licence

Not available

Not available

Battery and charging

6 of 13 differ

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

720mAh4Maker product pagesupport.nothing.tech/hc/en-us/articles/38910303499409-What-is-the-battery-capacity-of-CMF-Headphone-ProRead 8 October 2026The exact support article states 720 mAh. The maker technical table agrees. Rated versus typical capacity is not specified. This is the headset battery, not a nonexistent case battery.

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

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

No10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original English safety section expressly instructs users not to replace the battery themselves. Normal battery hot swapping is unsupported.

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

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

Not available

Not available

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.

ACMF Headphone Pro

Connection	ANC	Codec	Hours (h)
Bluetooth	No	AAC	100
Bluetooth	Yes	AAC	50
Bluetooth	No	LDAC	70
Bluetooth	Yes	LDAC	38

Source2Maker product pagesupport.nothing.tech/hc/en-us/articles/38910279111569-What-s-the-battery-life-of-CMF-Headphone-ProRead 8 October 2026The exact support article separately names AAC and LDAC playback with ANC off/on. The current maker technical table matches all four rows at 50% volume. Nothing laboratory temperature is 25°C. The support footnote says AAC even beneath LDAC rows, so the explicitly labelled codec rows govern. Talk and standby durations are excluded. The copied product disclaimer erroneously states 50 hours with ANC off and is not used.

BNothing Headphone (a)

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

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

Battery life (claimed, max)

100h=CalculatedFrom Claimed battery life

135h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

50h=CalculatedFrom Claimed battery life

75h=CalculatedFrom Claimed battery life

Battery life without ANC (claimed)

100h=CalculatedFrom Claimed battery life

135h=CalculatedFrom Claimed battery life

Charging port

USB-C10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original guide charging diagram identifies USB-C Charge In. Current exact support limits charging input to 5 W.

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

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

120min1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Charging table states Type-C wired charging to full in 120 minutes. The feature text says under two hours. The numeric table estimate is retained without using the copied case-related disclaimer.

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

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

5min3Maker product pagesupport.nothing.tech/hc/en-us/articles/38910318874897-Does-CMF-Headphone-Pro-support-fast-chargingRead 8 October 2026The exact current support article states a five-minute charge. The maker technical table agrees.

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

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

8h3Maker product pagesupport.nothing.tech/hc/en-us/articles/38910318874897-Does-CMF-Headphone-Pro-support-fast-chargingRead 8 October 2026Five minutes gives eight hours with ANC off or four hours with ANC on. The stored maximum is eight hours with ANC off, AAC, 50% volume, and 25°C laboratory temperature. Marketing prose and older announcements quote four or five hours without consistent ANC conditions and are excluded.

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

Use while charging

Not available

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

Charging dock or stand

Not available

Not available

Controls

1 of 6 differ

Controls

Buttons, Volume wheel, Slider6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The original guide and current support describe Power/BT and shortcut buttons plus a pressable Roller that controls volume. A separate physical Energy Slider adjusts bass or treble after selecting its tuning mode in Nothing X.

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

Volume control

Wheel6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The exact volume article states rolling the knob up/down adjusts playback volume.

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

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.

Yes6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The support controls list provides optional button functions and bass/treble tuning for the Slider through Nothing X. Essential Space requires Nothing OS.

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

Wear detection

No15Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact specification table and design discussion explicitly state no wear detection.

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

Voice assistant

ChatGPT27Maker product pagesupport.nothing.tech/hc/en-us/articles/39520905948689-Why-can-t-I-use-ChatGPT-on-CMF-Headphone-ProRead 8 October 2026The exact CMF Headphone Pro support article documents a configurable button shortcut to ChatGPT Voice. Requires a compatible Nothing or CMF phone, current phone system and Nothing X app, an installed signed-in ChatGPT app, and prior use of ChatGPT Voice. This is phone-app integration, not an independent on-headphone assistant. Unnamed generic phone assistants are not converted into specific Siri or Google Assistant claims.

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

Comfort and build

9 of 11 differ

Headband type

Padded13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact design discussion describes cushioning across the headband and ear pads.

Not available

Headband material

PU synthetic leather and memory foam13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact design section describes polyurethane synthetic leather and memory foam across the headband and ear pads. Steel reinforcement is independently identified by maker support.

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

Frame material

ABS plastic shell, PA+GF sliding arms, stainless steel headband strips8Maker product pagesupport.nothing.tech/hc/en-us/articles/38910349693841-What-material-is-the-outer-casing-of-CMF-Headphone-Pro-made-ofRead 8 October 2026The exact material article identifies ABS shell, PA+GF sliding arms, and stainless steel headband strips. The SoundGuys all-plastic description does not override these published internal reinforcement materials.

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

Ear cup material

Not available

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

Ear pad material

PU leather with high-resilience memory foam9Maker product pagesupport.nothing.tech/hc/en-us/articles/38910322756881-What-material-are-the-ear-cushions-of-CMF-Headphone-Pro-made-ofRead 8 October 2026The exact cushion material article specifies polyurethane synthetic leather covering and high-resilience memory foam fill.

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

Replaceable ear pads

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker states that cushions twist on and off for cleaning and replacement. Optional colored cushions are sold separately.

Not available

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.

Twist lock1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker describes twisting cushions on and off. Exact SoundGuys review confirms the rotating attachment. This is a twist-lock attachment rather than a clip or magnetic mount.

Not available

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

IPX220Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Water/dust resistance support article states IPX2 under IEC 60529. There is no certified dust protection. The TechRadar no-IP-rating claim is contradicted by the maker and is not used.

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

User-replaceable parts

Ear cushions1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explicitly permits swapping and cleaning the ear cushions. The original manual prohibits user battery replacement.

Not available

Software

0 of 3 differ

Companion app

Nothing X1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The Nothing X app section names Nothing X.

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

App platforms

Android, iOS1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker app section expressly says Android and iOS. Individual features have phone, OS, and app requirements.

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

User firmware updates

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker app section documents firmware update management.

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

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.

283g(10 oz)1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Headphones weight table states 283 g. This is the maker claim. Cushion weight is a separate 45 g entry with unspecified quantity scope and is not added to headset mass.

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

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

Certifications

1 of 3 differ

Hi-Res Audio

Hi-Res Audio, Hi-Res Audio Wireless1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker expressly claims wired and wireless Hi-Res certifications. Wireless high-resolution playback requires a compatible LDAC source.

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

Communication certifications

Not available

Not available

FCC ID

2AZEQ-B17510Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original regulatory document identifies exact FCC ID 2AZEQ-B175. Radio transmit power is not treated as audio amplifier power.

Not available

Other certifications

EU RED 2014/53/EU, EU RoHS 2011/65/EU and 2015/86326Maker spec sheet (PDF)s3.zoommer.ge/site/certificate/nothing-cmf-headphone-pro.pdfRead 8 October 2026English declaration page 2 lists RED 2014/53/EU and RoHS 2011/65/EU and 2015/863. These are maker declarations for B175, not inferred Bluetooth SIG or extra market-availability claims.

Not available

In the box

2 of 3 differ

In the box

CMF Headphone Pro, Carry pouch, User guide, Safety and warranty information, 3.5 mm to 3.5 mm audio cable (1.2 m)1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact In the box table lists the headset, pouch, guide, safety/warranty information, and one 1.2 m analog cable. No USB charging cable or wall charger is listed. Exact TechRadar review independently confirms both omissions.

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

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

ACMF Headphone Pro

Type	Length (m)	Count
3.5 mm to 3.5 mm audio cable	1.2	1

Source1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact package table lists one 3.5 mm to 3.5 mm audio cable, 1.2 m long. No charging cable is supplied. Contact arrangement is not inferred from nominal plug size.

BNothing Headphone (a)

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

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

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

Soft22Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The maker box table supplies a Carry Pouch. Exact SoundGuys and TechRadar reviews explicitly describe a cloth/fabric travel bag. This is a soft pouch, not a hard case.

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

Links

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Product page

us.nothing.tech/products/cmf-headphone-pro1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact US Dark Grey selector and public variant payload identify this reference. No Headphone (1) or Headphone (a) values are transferred.

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

Spec sheet

us.nothing.tech/products/cmf-headphone-pro1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The public page payload contains labelled technical specification tables. No separate exact maker datasheet was found. These tables were read from the normally downloaded page HTML.

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

Manual

fccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdf10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original 44-page manufacturer FCC exhibit combines safety/warranty information with the multilingual Quick Start Guide. Cover explicitly identifies model B175. This is not a generated third-party manual.

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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

0 of 1 differ

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

1year19Maker product pageus.nothing.tech/pages/terms-of-salesRead 8 October 2026Current US Terms of Sale section 6.8 gives headphones twelve months of limited warranty. This covers the original US maker-store purchase. Statutory rights and other regions are separate.

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

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