Headsets and headphones / Compare

Audio-Technica ATH-M40x vs beyerdynamic DT 990 PRO 250 ohm

A

Product A: Audio-Technica

ATH-M40x

47 of 161 known

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B

Product B: beyerdynamic

DT 990 PRO 250 ohm

45 of 161 known

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Every value links to where we found it.

Only differences

AAudio-Technica ATH-M40x

Bbeyerdynamic DT 990 PRO 250 ohm

General

3 of 8 differ

Series

M-Series7Press articlemusicradar.com/news/tech/namm-2014-audio-technica-reveals-new-m-series-headphones-591670Read 23 October 2026Describes the ATH-M40x as part of the overhauled M-Series range.

Not available

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

ATH-M40x2Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026Model number (型番): ATH-M40x

4590381Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Technical data: Article No. 459038. The spec sheet lists the 250 ohm version as order number 459.038.2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Versions: DT 990 PRO 250 ohm is order number 459.038.

GTIN / EAN

49613101254242Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026JAN code (JANコード) 4961310125424

40101184590301Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Technical data: EAN 4010118459030

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

January 20147Press articlemusicradar.com/news/tech/namm-2014-audio-technica-reveals-new-m-series-headphones-591670Read 23 October 2026Published 23 January 2014. It reproduces the maker press release dated 20-01-2014: the ATH-M20x, ATH-M30x, ATH-M40x and ATH-M50x make their debut at Winter NAMM 2014. The month is stored, as for the sibling models.

Not available

Status

Available1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Sold on the maker US store at $109.00 on the access date. The Japanese page marks the model as production ended (生産完了), so it is a Japan-only end of production.

Available1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Sold on the maker EU store, marked in stock in its product data.

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.

$1396Press articleprosoundweb.com/audio-technica-introduces-next-generation-m-series-headphonesRead 23 October 2026Article of 7 February 2014: the models are available in February 2014 at these U.S. MSRPs: ATH-M20x $69, ATH-M30x $99, ATH-M40x $139, ATH-M50x $239. Radio World of 25 February 2014 gives the same list. SoundGuys lists an MSRP of $99 for the ATH-M40x, which matches the ATH-M30x price and is not used.

Not available

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

Not available

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

Not available

Not available

ColoursiThe maker's own colour names

Black8Retailer pagethomannmusic.com/audio_technica_ath_m40_x.htmRead 23 October 2026Thomann spec table (item 331904): Colour Black.

Black8Retailer pagethomannmusic.com/beyerdynamic_dt990pro.htmRead 21 October 2026Thomann spec table for the 250 ohm model (item 106865): Colour Black. The same page names grey velour ear cushions. The maker pages do not name the housing colour.

Segment

Studio1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026The perfect studio headphones for professional tracking, mixing and monitoring.

Studio1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Studio headphones for critical listening and editing.

Design

3 of 7 differ

Form factor

Over-ear1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Over-ear wired headphones with a circumaural design.

Over-ear1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Wearing Style: Over-ear. Sound coupling to the ear: circumaural.

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

Closed1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Type Closed-back dynamic

Open1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Operating Principle: Open2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Operating principle: Open

Wearing style

Headband1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Headband headphones with 90 degree swiveling earcups and a collapsible design.

Headband1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Durable spring steel headband with padded support and adjustable fit.

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

Flat and inward1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Features: 90 degree swiveling earcups and collapsible for space-saving portability. The Japanese page describes a 90 degree flip mechanism and a folding mechanism, and the manual shows the swivel housing and the folded position. The value follows the ATH-M50x entry, which has the same mechanism.4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 23 October 2026The model chart gives the ATH-M40x items B, C, F and G. G is the folded position, with the text that the headphones can be folded for storage.

None5Measurementsoundguys.com/product/beyerdynamic-dt-990-proRead 15 October 2026Specs: Foldable No. The review adds that there are no hinges.6Reviewsoundguys.com/beyerdynamic-dt-990-pro-review-15223Read 15 October 2026There are no hinges, so you can't fold this up for transport.

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

Yes1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Features: 90 degree swiveling earcups for easy, one-ear monitoring. The Japanese page gives 90 degrees forward and 15 degrees backward.4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 23 October 2026Part names show the swivel housing.

Not available

RGB lighting

Not available

Not available

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

Not available

Not available

Drivers and sound

9 of 20 differ

Driver type

Dynamic1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Type Closed-back dynamic3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Type Closed-back dynamic

Dynamic2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Transducer type: Dynamic

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

40mm1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Driver Diameter 40 mm3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Driver Diameter 40 mm

45mm5Measurementsoundguys.com/product/beyerdynamic-dt-990-proRead 15 October 2026Specs: driver size 45 mm, dynamic driver, impedance 250 ohm, so the page covers this version. The maker pages do not state the driver size.

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

Not available

15Measurementsoundguys.com/product/beyerdynamic-dt-990-proRead 15 October 2026Specs: Driver Count 1.

Diaphragm material

Not available

Not available

Magnet

Neodymium1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Magnet Neodymium3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Magnet Neodymium

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.

Min15 HzMax24 kHz1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Frequency Response 15 - 24,000 Hz3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Frequency Response 15 - 24,000 Hz

Min5 HzMax35 kHz1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Headphone frequency response 5 - 35.000 Hz2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Nominal frequency response 5 - 35,000 Hz

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.

35Ω1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Impedance 35 ohms3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Impedance 35 ohms

250Ω1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Nominal Impedance Headphones 250 ohms2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Nominal impedance 80 ohm / 250 ohm. The 250 ohm version is order number 459.038.

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.

98dB1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Sensitivity 98 dB. The Japanese page gives 98 dB/mW.3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Sensitivity 98 dB

96dB1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Nominal sound pressure level 96 dB. The reference level is not stated, so no sensitivity reference is stored.2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Nominal SPL 96 dB, the same for both versions. The reference is not stated.

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

Per 1 mW2Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026Published as 98 dB/mW (出力音圧レベル 98dB/mW)

Not available

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

Not available

0.2%2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Nominal T.H.D. < 0.2%. Stored as the upper bound. The test level is not stated.

Max input power

1,600mW1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Maximum Input Power 1,600 mW at 1 kHz3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Maximum Input Power 1,600 mW at 1 kHz

100mW2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Power handling capacity 100 mW

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.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

EQ presets

Not available

Not available

Volume limit

Not available

Not available

Spatial audio

None of 3 known

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

Not available

Not available

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

0 of 10 differ

Active noise cancelling

No1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Passive wired studio headphones with no electronics.

No1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Passive open-back headphones with no electronics.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

ANC attenuation (claimed)

Not available

Not available

Transparency mode

Not available

Not available

Adjustable transparency

Not available

Not available

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

Not available

Not available

Wind noise reduction

Not available

Not available

Measured

4 of 21 differ

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

Follows the SoundGuys studio preference curve closely. Deviations in the sub-bass and between 200 and 600 Hz. Bass is audible but subdued, the lower mids get a modest boost at 100 to 200 Hz and the treble is pleasantly emphasized.9Measurementsoundguys.com/audio-technica-ath-m40x-review-1494Read 23 October 2026SoundGuys lab review, byline dated 31 January 2025, against its studio headphone preference curve. The graphs are script charts, so the text is the source: closely follows the curve with deviation in the sub-bass and in the 200 to 600 Hz midrange, bass subdued, lower mids boosted at 100 to 200 Hz, treble pleasantly emphasized.

Close to the SoundGuys target curve up to about 1.25 kHz, within 3 dB from 40 Hz. Then 7 to 9 dB above it from 2.5 to 5 kHz and up to 15.7 dB above at 8 kHz. About 6 dB below it at 20 Hz and 7 dB below at 20 kHz.5Measurementsoundguys.com/product/beyerdynamic-dt-990-proRead 15 October 2026SoundGuys lab measurement of the 250 ohm version against its Headphone Preference Curve: 20 Hz -6.4 dB, 40 Hz -2.8 dB, 1 kHz 0.0 dB, 2.5 kHz +7.3 dB, 5 kHz +9.4 dB, 8 kHz +15.7 dB, 20 kHz -7.1 dB. The page does not describe the test rig. The prose in the review mentions the DT 990 PRO X and is not used.

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

Not available

-1dB9Measurementrtings.com/headphones/reviews/beyerdynamic/dt-990-proRead 21 October 2026Public summary: Bass Amount slightly underemphasized (-1 dB) against the RTINGS target curve. Test bench 2.3. The review names the Black variant and does not state the impedance of the tested unit.

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

Not available

0dB9Measurementrtings.com/headphones/reviews/beyerdynamic/dt-990-proRead 21 October 2026Public summary: Treble Amount balanced (0 dB) against the RTINGS target curve. Sound signature: bright. The review does not state the impedance of the tested unit.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Clamping forceiMeasured by a reviewer, not claimed by the maker

Not available

Not available

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

Not available

364g(12.8 oz)10Reviewheadphonecheck.com/test/beyerdynamic-dt-990-proRead 21 October 2026Spec table of the 250 ohm unit (measured impedance 242.65 ohm): 364 g with cable and 271 g without cable. The page does not describe the scale. The with-cable value is stored because the maker weight includes the fixed coiled cable. The maker sheet says 370 g.

Microphone

0 of 16 differ

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

None1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Wired studio headphones with no microphone.

None1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Remote: Without Remote. Headphones without a microphone.

Microphone element

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

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

Not available

Flip to mute

Not available

Not available

Mute button

Not available

Not available

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

Not available

Not available

Sidetone

Not available

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

1 of 20 differ

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

Analog1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Wired headphones with detachable analog cables.

Analog1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Transmission Type: Wired

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

3.5 mm TRS, 6.35 mm2Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026Plug: 6.3 mm standard and 3.5 mm mini, gold-plated stereo 2-way (プラグ φ6.3mm標準/φ3.5mmミニ 金メッキステレオ2ウェイ)

3.5 mm TRS, 6.35 mm1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Coiled connecting cable with mini-jack plug (3.5 mm) and 1/4 inch adapter (6.35 mm)2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Connection: gold plated mini stereo jack plug (3.5 mm) and 1/4 inch adapter (6.35 mm)3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026The coiled cord ends in a gold-plated mini-jack and a 1/4 inch stereo jack adapter.

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

Proprietary2Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026Detachable cords with a bayonet lock mechanism (着脱コード(バヨネット式ロック機構)). Read as a maker-specific twist-lock connector, as for the ATH-M50x.

Fixed cable1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026FAQ on the page: classic DT models, including the DT 990 PRO, have fixed cables. The PRO X models have detachable cables.2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Features: single-sided cable. No detachable connector is listed.5Measurementsoundguys.com/product/beyerdynamic-dt-990-proRead 15 October 2026The review says the cable isn't removable.6Reviewsoundguys.com/beyerdynamic-dt-990-pro-review-15223Read 15 October 2026The cable is non-removable and coiled.

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

3m1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Cable: detachable 3.0 m (9.8 ft) straight cable, the longest of the two included cables. The coiled cable runs 1.2 m to 3.0 m.

3m2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Length and type of cable: 3 m / coiled cable (250 ohm)3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026The coiled cord can be extended to a maximum of 3 m.6Reviewsoundguys.com/beyerdynamic-dt-990-pro-review-15223Read 15 October 2026A coiled cable that extends to 3 m. The review calls it 1 m coiled.

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.

Not available

Not available

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.

Not available

Not available

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.

Yes1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Passive dynamic headphones with no battery, so analog playback needs no power.

Yes1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Wired dynamic headphones with no battery or electronics, so analog playback needs no power.

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

None1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Wired headphones with no wireless parts.

None1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Wired headphones with no wireless parts.

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

Not available

Not available

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

Not available

Not available

Bluetooth

Not available

Not available

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

Not available

Not available

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.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Base station

Not available

Not available

Latency

None of 2 known

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

Not available

Not available

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

Not available

Not available

Compatibility

None of 3 known

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

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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.

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Official licence

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Battery and charging

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

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

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

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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.

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Battery life (claimed, max)

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Battery life with ANC (claimed)

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Battery life without ANC (claimed)

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Charging port

None1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Passive wired headphones with no battery or charging port.

None1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Passive wired headphones with no battery or charging port.

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

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

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

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Use while charging

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Charging dock or stand

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Controls

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Controls

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Volume control

None1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026No volume control on the headphones or the supplied cables.

None1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Remote: Without Remote

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.

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

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Wear detection

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Voice assistant

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Comfort and build

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Headband type

Padded2Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026New earpad and head pad (ヘッドパッド) materials for high durability, so the headband has a head pad.

Padded1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Spring steel headband with padded support.2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Features: soft headband pad.

Headband material

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Frame material

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Spring steel1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Durable spring steel headband.2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Features: robust spring steel headband.

Ear cup material

Plastic10Reviewsonarworks.com/soundid-reference/blog/reviews/ath-m40x-studio-headphone-reviewRead 23 October 2026Sonarworks review of 27 May 2019: the ear cups are plastic and seem of lower quality than the ATH-M50x.

Plastic5Measurementsoundguys.com/product/beyerdynamic-dt-990-proRead 15 October 2026The review says the build is almost entirely plastic, save for the metal band and yoke that suspends the ear cups.6Reviewsoundguys.com/beyerdynamic-dt-990-pro-review-15223Read 15 October 2026Almost entirely plastic, save for the metal band and yoke.

Ear pad material

Synthetic leather10Reviewsonarworks.com/soundid-reference/blog/reviews/ath-m40x-studio-headphone-reviewRead 23 October 2026Sonarworks review: the ear pads are artificial leather (pleather). SoundGuys also calls the pads synthetic.

Velour1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Soft, breathable velour ear pads.

Replaceable ear pads

Yes2Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026Sold separately (別売): replacement ear pads HP-M40x.5Maker spec sheet (PDF)docs.audio-technica.com/eu/p52521_mseries_earpad_replacement.pdfRead 23 October 2026The instruction lists the ATH-M40x among the models and tells the user to remove the existing earpad by pulling it off.

Yes1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Soft, circumaural and replaceable ear pads. Available spare parts: ear pads, headbands, cables, systems, housing.3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026How to change the ear pads: pull the pads off the earphone shell with your fingertips.

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.

Stretch-over5Maker spec sheet (PDF)docs.audio-technica.com/eu/p52521_mseries_earpad_replacement.pdfRead 23 October 2026Instruction P52521 for HP-EP replacement earpads names the ATH-M40x. Step 2: slide the new earpad's flange into the slot of the earcup. Step 3: gently stretch the flange over the slot until the pad is securely in place.

Twist lock3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026To attach an ear pad, insert its plastic lip into the groove of the headphone and turn it clockwise until it is fully installed.

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

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User-replaceable parts

Ear pads (HP-M40x), Coiled cable 1.2 m, Straight cable 3.0 m2Maker product pageaudio-technica.co.jp/product/ATH-M40xRead 23 October 2026Sold separately (別売): replacement ear pads HP-M40x, coiled cord (detachable) 1.2 m and straight cord (detachable) 3.0 m.

Ear pads (EDT 990 V), Headband pad (BN 59-53/D)1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026Accessories: ear pads EDT 990 V velour. The headband pad is a spare part named in the spec sheet.2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Replacement parts: ear pads EDT 990 V (order 926.679) and headband pad BN 59-53/D (order 990.681).3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026The manual shows how to change the ear pads and the headband pad.

Software

None of 3 known

Companion app

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App platforms

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User firmware updates

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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.

240g(8.5 oz)1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Weight 240 g (8.5 oz), without cable and connector3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026PDF page 6: Weight 240 g (8.5 oz), without cable and connector8Retailer pagethomannmusic.com/audio_technica_ath_m40_x.htmRead 23 October 2026Thomann lists 241 g without cable and 300 g with cable, which agrees with the maker 240 g without cable.

370g(13.1 oz)2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026Weight of the 250 ohm version: 370 g. The 80 ohm version is 340 g. The maker product page text says 375 grams including the cable and lists 250 g without cable, so the sheet value is read as the weight with the fixed coiled cable. The sheet value is stored because the sheet is preferred over page text.

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

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Communication certifications

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FCC ID

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Other certifications

RoHS (2011/65/EU)3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026Declaration of Conformity on PDF page 9 covers ATH-M20x/30x/40x/50x and lists RoHS Directive 2011/65/EU and EN50581:2012. This is manufacturer self-declaration, not independent certification.

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In the box

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In the box

Detachable coiled cable 1.2 m, extends to about 3.0 m, Detachable straight cable 3.0 m, 6.3 mm (1/4 inch) screw-on adapter, Protective carrying pouch1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Specifications: Accessories included: protective carrying pouch and 6.3 mm (1/4 inch) screw-on adapter. Cable: two interchangeable cables, a detachable 1.2 m to 3.0 m coiled cable and a detachable 3.0 m straight cable.

DT 990 PRO 250 ohm headphones with fixed coiled cable, 6.35 mm (1/4 inch) jack adapter, Drawstring bag3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026Supplied accessories: 1 x 1/4 inch (6.35 mm) jack adapter and 1 x drawstring bag.6Reviewsoundguys.com/beyerdynamic-dt-990-pro-review-15223Read 15 October 2026Headphones, soft carrying case and 1/4 inch adapter

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

AAudio-Technica ATH-M40x

Type	Length (m)	Count
Coiled cable, detachable, extends to 3.0 m	1.2	1
Straight cable, detachable	3	1

Source1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Cable: detachable 1.2 m to 3.0 m coiled cable and detachable 3.0 m straight cable. The Japanese page gives the coiled cable as 1.2 m, about 3 m when extended.4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 23 October 2026The model chart gives the ATH-M40x a 3.0 m detachable straight cable (B) and a 3.0 m detachable coiled cable (C).

Bbeyerdynamic DT 990 PRO 250 ohm

Type	Length (m)	Count
Coiled cable, fixed to the headphones, extends to 3 m	3	1

Source2Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 20263 m coiled cable for the 250 ohm version. The sheet lists a single-sided cable.3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026The coiled cord is part of the headphones. Technical data list a 3 m coiled cable for the 250 ohm version.

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

Soft1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026Accessories included: protective carrying pouch

Soft3Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026Supplied accessories list a drawstring bag. The hard case is a separate accessory.6Reviewsoundguys.com/beyerdynamic-dt-990-pro-review-15223Read 15 October 2026You get the headphones with a soft carrying case and a 1/4 inch adapter. The maker manual lists a drawstring bag.

Links

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Product page

www.audio-technica.com/en-us/ath-m40x1Maker product pageaudio-technica.com/en-us/ath-m40xRead 23 October 2026

europe.beyerdynamic.com/p/dt-990-pro-250-ohms1Maker product pageeurope.beyerdynamic.com/p/dt-990-pro-250-ohmsRead 15 October 2026

Spec sheet

docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdf3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 23 October 2026Official technical construction file TCF ATTWCE-HP140318001 dated 2014-03-18. The ATH-M40x table is on PDF page 6. Image-only PDF, read visually.

api.beyerdynamic.de/amfile/file/download/file/8622Maker spec sheet (PDF)api.beyerdynamic.de/amfile/file/download/file/862Read 15 October 2026DT 990 PRO data sheet E1/DT 990 PRO (08.22). One sheet covers the 80 and 250 ohm versions.

Manual

www.audio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdf4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 23 October 2026Operating instructions for ATH-M50x, ATH-M40x, ATH-M30x and ATH-M20x. PDF page 2 is in English.

api.beyerdynamic.de/amfile/file/download/file/9943Owner's manualapi.beyerdynamic.de/amfile/file/download/file/994Read 15 October 2026DT 990 PRO operating instructions, English section on manual pages 3 to 5. The pages are images, read visually.

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.

1year4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 23 October 2026Japanese warranty certificate on PDF page 1: one year from purchase. This is Japan coverage, not a global warranty claim.

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