Headsets and headphones / Compare

CMF Headphone Pro vs soundcore Space 2

A

Product A: CMF

Headphone Pro

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B

Product B: soundcore

Space 2

86 of 161 known

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Every value links to where we found it.

Only differences

ACMF Headphone Pro

Bsoundcore Space 2

General

6 of 8 differ

Series

Not available

Space8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Model Series: Soundcore Space Series, Generation 2nd Generation.

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.

D1402, D1402Z11, D1402Z21, D1402Z614Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Store variant SKUs from the product data: D1402Z61 Seafoam Green, D1402Z21 Linen White, D1402Z11 Jet Black. D1402 is the base model on the user guide and the Amazon listing.8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Model Number D1402, Jet Black listing.

GTIN / EAN

Not available

194644321956, 194644321963, 1946443219704Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Store variant barcodes: 194644321970 Seafoam Green, 194644321963 Linen White, 194644321956 Jet Black. The Amazon UPC for the Jet Black listing is 194644321956.8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026UPC 194644321956 on the Jet Black listing.

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.

1 March 20269Press articleubergizmo.com/2026/03/soundcore-space-2Read 15 October 2026Article dated 03/01/2026: unveiled at MWC 2026 in Barcelona. Cult of Mac says announced in early March.

Status

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

Available4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026The maker US store lists the product and retailers sell it. The US store itself showed sold out when read, which is stock and not a discontinuation.

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

Not available

soundcore Space One17Reviewtomsguide.com/audio/headphones/ive-been-trying-soundcores-space-2-headphones-at-mwc-2026-and-i-dont-want-to-take-them-offRead 23 October 2026Tom's Guide calls the Space 2 the follow-up to the Space One and compares it with its predecessor's battery life.18Press articlethe-gadgeteer.com/2026/03/09/when-your-budget-headphones-outlive-your-vacationRead 23 October 2026The Gadgeteer says the Space 2 replaces the Space One in Anker's lineup.

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.

$129.994Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Regular price $129.99 USD.9Press articleubergizmo.com/2026/03/soundcore-space-2Read 15 October 2026$129.99 in the US.

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

€129.999Press articleubergizmo.com/2026/03/soundcore-space-2Read 15 October 2026Retail price $129.99 in the US, GBP 129.99 in the UK and EUR 129.99 in Germany and the EU. Tax treatment is not stated.

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.

Jet Black, Linen White, Seafoam Green4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Colour picker: Seafoam Green, Linen White, Jet Black. The store showed every colour as sold out or unavailable when read, while Amazon US and other retailers sell it.

Segment

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

Music4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Maker text: noise cancelling headphones for all-day wear and travel, with Hi-Res Audio and LDAC. 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-ear8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Headphones Ear Placement: Over Ear. HeadphoneCheck lists ear coupling 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.

Closed12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026Technical specifications: Type closed-back, ear coupling over-ear.14Reviewtomsguide.com/audio/headphones/soundcore-space-2-reviewRead 15 October 2026Spec table: headphone style closed back.

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.

Headband10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026Over-ear headband with plush memory foam padding on the headband and ear cups.

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.

Flat and inward10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026The headphones swivel flat and fold up compactly.12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026The foldable Space 2 can be folded flat.13Reviewthumbculture.co.uk/soundcore-space-2-headset-reviewRead 15 October 2026The ear cups rotate completely flat and fold inward.

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.

Yes10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026The headphones swivel flat.13Reviewthumbculture.co.uk/soundcore-space-2-headset-reviewRead 15 October 2026The ear cups rotate completely flat.

RGB lighting

Not available

Not available

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

Not available

Not available

Drivers and sound

5 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.

Dynamic8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Audio Driver Type: Dynamic Driver. HeadphoneCheck and SoundGuys also list a dynamic driver.12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026Technical 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.

40mm4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: 40mm double-layer diaphragm drivers.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS: Driver Size 40 mm.

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

Not available

111Measurementsoundguys.com/product/soundcore-space-2Read 15 October 2026Specification list: Driver Count 1.

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.

Double-layer silk and metal-ceramic diaphragm4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: double-layer diaphragm. Cult of Mac, SoundGuys and Ubergizmo name it a silk diaphragm with metal-ceramic material.15Reviewcultofmac.comRead 15 October 2026Double-layer diaphragm drivers combining a silk diaphragm with metal ceramic material.

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 kHz5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS: Frequency Response 20 Hz - 40 kHz. No power state or test standard is given. The 40 kHz end applies to LDAC at best, and no source separates wired from wireless.

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.

16Ω5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS: Impedance 16 ohm +/- 15%. No power state is given.

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

Not available

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

Not available

Not available

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.

Yes10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026HearID Sound builds a personalised EQ from a hearing test and a preference test.14Reviewtomsguide.com/audio/headphones/soundcore-space-2-reviewRead 15 October 2026HearID personalised EQ is a gamified hearing test that builds an EQ.15Reviewcultofmac.comRead 15 October 2026HearID 3.0 hearing test builds a personalized EQ.

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.

810Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026A custom 8-band EQ.12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026An eight-band EQ that can be saved as presets.16Reviewwhathifi.com/headphones/soundcore-space-2Read 15 October 2026Eight-band equaliser in the Soundcore app.

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.

Not available

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.

3D Audio3Maker product pageservice.soundcore.com/article-description/soundcore-Space-2-Setup-and-Basic-Operations-GuideRead 15 October 2026Features: 3D Audio enhances stereo and spatial effects, and cannot be used together with LDAC. SoundGuys and HeadphoneCheck call it 3D Sound.10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026A 3D Sound toggle for spatial audio.

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

Not available

Noise cancelling

7 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.

Yes4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: 4-stage low-frequency noise cancelling system.

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.

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

48Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Product description: 2 noise-detecting microphones on each side.

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.

Yes9Press articleubergizmo.com/2026/03/soundcore-space-2Read 15 October 2026The 4-stage noise cancelling is designed to adjust automatically to environments such as jet engines, buses and offices. SoundGuys calls it adaptive four-stage ANC and HeadphoneCheck says the adaptive ANC activates automatically.

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.

Not available

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.

37dB6Maker product pageservice.soundcore.com/article-description/soundcore-Space-2-Specs-Features-and-CompatibilityRead 15 October 2026Specification: noise cancellation depth -37 dB (tested in Anker laboratory). The frequency is not stated. Stored as 37 dB of attenuation.

Transparency mode

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

Yes5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Transparency page: switch to transparency mode with the NC button.

Adjustable transparency

Not available

No12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026The review wishes for a transparency mode with two or three adjustable intensity levels, so none exists.

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

Not available

No12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026The Easy Chat function is exclusive to the Space One.

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 is about 3 to 4 dB above it in the sub-bass below 50 Hz, dips to about 6 dB below it near 125 Hz, peaks at about 6.5 dB near 1.6 kHz and about 8 dB near 8 kHz, and rolls off above 10 kHz. SoundGuys calls the default tuning boxy and says it changes with ANC off.11Measurementsoundguys.com/product/soundcore-space-2Read 15 October 2026Lab chart against the SoundGuys Headphone Preference Curve: +3.9 dB at 20 Hz, +2.6 dB at 50 Hz, -6.3 dB at 125 Hz, 0.1 dB at 1 kHz, +6.5 dB at 1.6 kHz, +5.4 dB at 3.15 kHz, +5.9 dB at 5 kHz, +7.9 dB at 8 kHz, -3.5 dB at 10 kHz and -16.3 dB at 16 kHz. The SoundGuys target is its own house curve and the test rig is not named.

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.

In ideal conditions the voice sounds clear and natural. Noise rejection is very good in office and street conditions. In wind the voice is a little muffled but understandable.10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026Microphone demos in ideal, office, street, windy and reverberant conditions. The review says the three-mic array works well and wind is the weak spot.

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.

Bsoundcore Space 2

Connection	ANC	Hours (h)
Bluetooth	Yes	53.35

Source10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026In the SoundGuys standardized battery test the headphones lasted 53 hours 21 minutes with ANC on, stored as 53.35 hours. Codec, volume and test signal are not stated in the review. The review header says battery is not measured, which contradicts the body text.

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

49.5h=CalculatedFrom Measured battery life

53.35h=CalculatedFrom Measured battery life

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

263g(9.3 oz)12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026Technical specifications: Weight without cable 263 g and with cable 271 g. The maker figures are 264 g and 261 g.

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-in10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026The three microphones are built into the ear cups. The review and the box list no boom microphone.

Microphone element

Not available

Not available

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

Not available

Not available

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

31Maker product pageus.nothing.tech/products/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.

310Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026Three-mic array with an AI noise-reduction algorithm for calls.13Reviewthumbculture.co.uk/soundcore-space-2-headset-reviewRead 15 October 2026A 3-microphone array.

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.

Not available

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

AI9Press articleubergizmo.com/2026/03/soundcore-space-2Read 15 October 2026A three-microphone array paired with AI noise reduction.

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

8 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, Analog5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Wired listening: 3.5 mm AUX cable. Bluetooth turns off in wired mode. The USB-C port is for charging.

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

Not available

Not available

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

3.5 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 mm5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Overview item 5: 3.5 mm Audio Input on the headphones. Amazon lists the cable as detachable.

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.

Not available

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-C5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Overview item 4: USB-C Charging Port. It is charging only.

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.

No10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026The Space 2 does not support USB-C audio. The USB-C port is for charging only.16Reviewwhathifi.com/headphones/soundcore-space-2Read 15 October 2026No direct support for USB-C audio. The review lists Bluetooth 6.0, which the maker manual contradicts.

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.

Yes1Maker product pageservice.soundcore.com/article-description/How-do-I-connect-my-soundcore-Space-2-using-the-AUX-cableRead 15 October 2026The maker AUX article says to keep the headphones off while connecting the cable, then hold the power button for 2 seconds so the default EQ applies. The headphones power off when the cable is removed. It does not say whether sound plays with a flat battery. HeadphoneCheck and Cult of Mac say it does, so passive listening is stored as true.10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026Not stated in this review. The value comes from HeadphoneCheck and Cult of Mac.12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026The 3.5 mm input works both passively with a depleted battery and actively with noise cancellation and transparency available.15Reviewcultofmac.comRead 15 October 2026The wired option makes the headphones practical when the battery is completely flat.

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

Not available

None5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Bluetooth only. The box has no receiver.

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.

15m5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS: Bluetooth Range 49 ft (15 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.

6.15Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS: Bluetooth Version 6.1. What Hi-Fi prints 6.0, which does not match the maker.

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.

SBC, AAC, LDAC4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: LDAC in wireless mode. SBC and AAC come from the support article.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026LDAC page: LDAC needs Android 8.0 or later and is enabled in the soundcore app. SBC and AAC come from the support article.6Maker product pageservice.soundcore.com/article-description/soundcore-Space-2-Specs-Features-and-CompatibilityRead 15 October 2026What audio codecs are supported? SBC, AAC and 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

No10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026They do not support Auracast.15Reviewcultofmac.comRead 15 October 2026Space 2 does not support Auracast.

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.

Yes3Maker product pageservice.soundcore.com/article-description/soundcore-Space-2-Setup-and-Basic-Operations-GuideRead 15 October 2026Dual device connection is enabled by default and can be switched off in the soundcore app. Audio switches between devices manually or automatically.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Dual connections: enabled by default, and LDAC remains available with two devices connected.14Reviewtomsguide.com/audio/headphones/soundcore-space-2-reviewRead 15 October 2026Multipoint connectivity works with the phone and laptop and switches automatically.

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.

25Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Dual Connections: two devices at once.

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 Pair5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Powering on and pairing: Google Fast Pairing for Android 6.0 and above, which may be unavailable in some regions.

Base station

Not available

Not available

Latency

2 of 2 differ

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

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.

Not available

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.

Bsoundcore Space 2

Not available

Compatibility

2 of 3 differ

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

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, iOS10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026Soundcore app on iOS and Android. Google Fast Pair on Android 6.0 and above. LDAC needs Android. Other hosts work over Bluetooth or the 3.5 mm cable but are not documented.

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.

Bsoundcore Space 2

Not available

Official licence

Not available

Not available

Battery and charging

7 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.

750mAh5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS: Battery Capacity 750 mAh x 1. Input 5V 0.75A.

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.

Not available

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.

Bsoundcore Space 2

Connection	ANC	Codec	Hours (h)
Bluetooth	Yes	Not available	50
Bluetooth	No	Not available	70
Bluetooth	Yes	LDAC	40
Bluetooth	No	LDAC	45

Source4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: up to 50 hours with ANC on or 70 hours with ANC off.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS Playtime: ANC On 50 hours, ANC Off 70 hours, LDAC + ANC On 40 hours, LDAC + ANC Off 45 hours. The support article says the figures are tested on an iPhone at 50% volume with wearing detection off, and that 3D audio effects and EQ switching reduce playtime.6Maker product pageservice.soundcore.com/article-description/soundcore-Space-2-Specs-Features-and-CompatibilityRead 15 October 2026Battery FAQ: ANC mode 50H, ANC mode + LDAC 40H, Normal mode 70H, tested on an iPhone at 50% volume with wearing detection off. With wearing detection on the figures are 5 hours lower. The manual's LDAC with ANC off figure (45 h) is not in the FAQ.

Battery life (claimed, max)

100h=CalculatedFrom Claimed battery life

70h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

50h=CalculatedFrom Claimed battery life

50h=CalculatedFrom Claimed battery life

Battery life without ANC (claimed)

100h=CalculatedFrom Claimed battery life

70h=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-C5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Charging: use the included USB-C charging cable.

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.

120min5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026SPECS: Charging Time approx. 2 hr. Charging page: a full charge takes about 2 hours. HeadphoneCheck measured 95 minutes.

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.

5min4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: 4 hours of listening from a 5-minute charge.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Charging: a 5-minute quick charge provides up to 4 hours of wireless playtime.

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.

4h4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: 4 hours from a 5-minute charge. The support article says this is wireless playtime.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Charging: 5 min = 4 hr playback.

Use while charging

Not available

No5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Charging: do not use the headphones while charging.

Charging dock or stand

Not available

Not available

Controls

4 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.

Buttons5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Button controls: NC button, power button, volume up and down, multi-function button. All physical buttons.

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.

Buttons5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Button controls: volume up and volume down press once.

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.

Yes3Maker product pageservice.soundcore.com/article-description/soundcore-Space-2-Setup-and-Basic-Operations-GuideRead 15 October 2026The multi-function button long press can be set to the phone voice assistant, Anka, AI Translation or Nap Mode. Only one function at a time.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026The multi-function button long press can be set to Voice Assistant, Anka, AI Translation or Nap Mode in the app.

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.

Yes5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Wearing detection page: music pauses when the headphones come off and resumes when worn. It is off by default and works only over Bluetooth.10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026A wearing detection sensor sits in the left ear cup. It is off by default.14Reviewtomsguide.com/audio/headphones/soundcore-space-2-reviewRead 15 October 2026Wear detection needs calibration in the app.

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.

Voice Assistant, Anka3Maker product pageservice.soundcore.com/article-description/soundcore-Space-2-Setup-and-Basic-Operations-GuideRead 15 October 2026The long-press function can start the phone's native voice assistant or the Anka voice assistant.5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Button controls: Activate Voice Assistant / Anka / AI Translation / Nap Mode.

Comfort and build

6 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.

Padded14Reviewtomsguide.com/audio/headphones/soundcore-space-2-reviewRead 15 October 2026Padded headband that did not feel heavy.

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.

Not available

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.

Plastic with a metal headband frame10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026The build is primarily plastic with a metal frame underneath.

Ear cup material

Not available

ABS and polycarbonate8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Additional details: Enclosure Material ABS and polycarbonate.

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.

Protein leather over slow-rebound memory foam4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: upgraded protein leather ear cushions with slow-rebound memory foam.

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.

Yes2Maker product pageservice.soundcore.com/article-description/How-to-Replace-and-install-the-Ear-Cushions-on-soundcore-Space-2Read 15 October 2026Maker support article: the ear cushions are designed to be removable and replaced at home with no tools. They are not left or right specific. Soundcore sells Space 2 ear cushions on its store.

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.

Clip2Maker product pageservice.soundcore.com/article-description/How-to-Replace-and-install-the-Ear-Cushions-on-soundcore-Space-2Read 15 October 2026Remove by pushing the cushion inward and pulling it outward. Install by aligning each locating pin with its hole and pressing until it snaps in flush. The care article says mounting tabs and slots. Stored as clip.

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

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Ear tips included

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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.

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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.

Ear cushions2Maker product pageservice.soundcore.com/article-description/How-to-Replace-and-install-the-Ear-Cushions-on-soundcore-Space-2Read 15 October 2026Ear cushions only. No source says the battery can be replaced by the user.

Software

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Companion app

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

soundcore5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026The manual refers to the soundcore 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, iOS10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026The Soundcore app is supported on iOS and Android.

User firmware updates

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

Yes5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026Firmware update page: the app shows new firmware when it is found.

Dimensions and weight

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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.

264g(9.3 oz)8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Item Weight 264 g, Mfr Part Number D1402, manufacturer Anker. What Hi-Fi and TechRadar also say 264 g and Tom's Guide 9.3 oz. SoundGuys, Thumb Culture and the launch coverage say 261 g, and Anker Japan says about 260 g. HeadphoneCheck lists 263 g without cable and 271 g with cable.

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.

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Certifications

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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 Wireless4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 15 October 2026Page text: supports Hi-Res Audio in wired mode and LDAC in wireless mode. The Amazon title says LDAC Hi-Res Wireless Audio. No certification list was checked.

Communication certifications

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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.

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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.

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In the box

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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.

Space 2 headphones, USB-C charging cable, 3.5 mm AUX cable, Travel pouch8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Built-in media: AUX cable x1, cable, Space 2 headphones x1, travel pouch x1. HeadphoneCheck lists the USB-C charging cable, mini-jack cable and carry pouch.12Reviewheadphonecheck.com/test/soundcore-space-2Read 15 October 2026Delivery scope: USB-C charging cable, mini-jack cable, carry pouch.

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.

Bsoundcore Space 2

Type	Count
USB-C charging cable	1
3.5 mm AUX cable	1

Source8Retailer pageamazon.com/dp/B0GR4GR5QHRead 15 October 2026Built-in media lists one AUX cable and one cable. HeadphoneCheck names a USB-C charging cable and a mini-jack cable. Lengths are not published, and HeadphoneCheck calls the USB-C cable short.

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.

Soft10Measurementsoundguys.com/anker-soundcore-space-2-review-all-day-comfort-all-week-battery-156308Read 15 October 2026Soundcore includes only a cloth pouch, no hardshell case.

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.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphones4Maker product pageus.soundcore.com/products/d1402-space-2-comfortable-noise-cancelling-headphonesRead 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.

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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.

salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdf5Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000034457/en_US/000034457.pdfRead 15 October 2026soundcore Space 2 User Guide (D1402), English.

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.

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.

1.5years7Maker product pageus.soundcore.com/pages/warrantyRead 15 October 2026US warranty page: headphones 18 months from the purchase date. A statutory warranty in other markets can be longer. The Amazon listing also says 18.

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