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Audio-Technica ATH-M20x vs beyerdynamic DT 990 PRO 250 ohm

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Product A: Audio-Technica

ATH-M20x

48 of 161 known

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Product B: beyerdynamic

DT 990 PRO 250 ohm

45 of 161 known

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Only differences

AAudio-Technica ATH-M20x

Bbeyerdynamic DT 990 PRO 250 ohm

General

5 of 8 differ

Series

M-Series1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026The page speaks of the ATH-M20 series and sits beside the other M-Series models. The M-Series name is from the 2014 launch release5Press articleprosoundweb.com/audio-technica-introduces-next-generation-m-series-headphonesRead 15 October 2026Audio-Technica has remastered its M-Series line of professional monitor headphones

Not available

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

ATH-M20x, ATH-M20x WH1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Model number ATH-M20x. The white online-store model has its own page with model number ATH-M20x WH2Maker product pageaudio-technica.co.jp/product/ATH-M20x_WHRead 15 October 2026White online-store limited model, model number ATH-M20x WH. Release date 2024-09-27

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

4961310125400, 49613101631981Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026JAN code 4961310125400 for ATH-M20x. The white model page gives 49613101631982Maker product pageaudio-technica.co.jp/product/ATH-M20x_WHRead 15 October 2026JAN code 4961310163198

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 20146Press articlemusicradar.com/news/tech/namm-2014-audio-technica-reveals-new-m-series-headphones-591670Read 15 October 2026Article published 2014-01-23 reproduces the maker release dated 2014-01-20: the ATH-M20x made its debut at Winter NAMM 2014

Not available

Status

Available1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Current product page, updated to a sales figure dated October 2026. Thomann also has it in stock7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026In stock on the access date

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.

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

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

$695Press articleprosoundweb.com/audio-technica-introduces-next-generation-m-series-headphonesRead 15 October 2026U.S. MSRP: ATH-M20x $69. Street prices were lower, and SoundGuys later lists $49

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.

JP, US, EU1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Sold in Japan by the maker. The US MSRP comes from the launch release3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026The file is an EU conformity file for the EMC and RoHS directives, with an authorized representative in Leeds, UK and distribution contacts in Germany, France and Hungary.5Press articleprosoundweb.com/audio-technica-introduces-next-generation-m-series-headphonesRead 15 October 2026U.S. MSRP published for the launch7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Thomann, a German shop, lists the black ATH-M20x in stock on the access date.

Not available

ColoursiThe maker's own colour names

Black, White2Maker product pageaudio-technica.co.jp/product/ATH-M20x_WHRead 15 October 2026White colour model (ホワイトカラーモデル), limited to the official online store7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Colour: Black. The white ATH-M20xWH is listed as a variation of the product

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.co.jp/product/ATH-M20xRead 15 October 2026Product category: Professional monitor headphones (プロフェッショナルモニターヘッドホン)

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

Design

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Form factor

Over-ear7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Circumaural, over-ear 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.co.jp/product/ATH-M20xRead 15 October 2026Type: closed dynamic (密閉ダイナミック型)7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Closed-back

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

Headband8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026Over-ear headphones with a padded crown band and a metal-reinforced headband

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.

None4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 15 October 2026The model table gives the ATH-M20x only items A (3.0 m cable) and E (6.3 mm adapter). The folded position G is listed for the ATH-M30x, ATH-M40x and ATH-M50x only. SoundGuys confirms that the ATH-M20x does not fold8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026The ATH-M20x does not fold down at all

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.

Not available

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RGB lighting

Not available

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

Not available

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Drivers and sound

8 of 20 differ

Driver type

Dynamic1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Type: closed dynamic3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Type: closed-back dynamic7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026

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.co.jp/product/ATH-M20xRead 15 October 2026Driver: 40 mm, new strong-magnet CCAW voice coil driver3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Driver diameter 40 mm. Voice coil: copper-clad aluminum wire7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 202640 mm driver with neodymium magnet and copper-clad aluminium wire voice coils

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

Neodymium3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Magnet: neodymium7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Neodymium magnet

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 HzMax20 kHz1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Frequency response 15 to 20,000 Hz3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Frequency response 15 - 20,000 Hz7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026

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.

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Impedance (passive when specified)iUse the headset-off value for a passive analog connection when the maker publishes both powered and passive values. Note the power state and test frequency.

47Ω1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Impedance 47 ohm3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Impedance 47 ohms7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026

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.

96dB1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Output sound pressure level: 96 dB/mW3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Sensitivity 96 dB. The reference is not stated here7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026

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 mW1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Published as 96 dB/mW

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

Not available

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

700mW1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Maximum input 700 mW. The EU technical file adds at 1 kHz3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Maximum input power 700 mW at 1 kHz7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Max. input level 700 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

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DAC

Not available

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

Not available

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

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

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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

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Head tracking

Not available

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Noise cancelling

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Active noise cancelling

No8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026The review describes passive isolation only and does not mention active noise cancelling

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

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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

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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

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Wind noise reduction

Not available

Not available

Measured

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

Under-emphasises almost the whole range against the SoundGuys studio curve, apart from a slight emphasis at 2 kHz. The main deviations are below 70 Hz and in the highs at 5 kHz and between 8 and 10 kHz.8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026SoundGuys lab measurement against its studio target curve. Slight emphasis at 2 kHz, under-emphasis elsewhere. Main deviations below 70 Hz, at 5 kHz and between 8 and 10 kHz. The review also notes that the ear cups rotate 15 degrees and that the headphones have no rotating ear cups, so the swivel field is left out

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

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

Not available

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

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

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

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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

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

None1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026The specification table has a driver, plug and cord section and no microphone section. The ATH-M20xSTS page of the same maker does list a microphone section

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

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Connectivity

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

Analog8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026The ATH-M20x connects to a source with a 3.5 mm cable and ships with a 1/4 inch adapter

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 mm1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Plug: 6.3 mm standard and 3.5 mm mini, gold-plated stereo 2-way plug. Stereo is read as a 3-pole TRS plug4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 15 October 20266.3 mm stereo plug adapter (accessory) for the 3.5 mm gold-plated stereo plug7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 20263.5 mm jack plug, 6.3 mm adapter included

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.

Fixed cable6Press articlemusicradar.com/news/tech/namm-2014-audio-technica-reveals-new-m-series-headphones-591670Read 15 October 2026Maker NAMM 2014 release: single-side cable exit with a permanently attached 3 m cable7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Replaceable cable: No. A fixed three-metre cable on the left-hand side8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026The cable is not detachable or replaceable

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.co.jp/product/ATH-M20xRead 15 October 2026Cord length 3.0 m3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Cable: 3.0 m (9.8 ft), straight, left-side exit6Press articlemusicradar.com/news/tech/namm-2014-audio-technica-reveals-new-m-series-headphones-591670Read 15 October 2026Permanently attached 3 m cable7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 20263 m cable with 3.5 mm jack plug

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.

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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.co.jp/product/ATH-M20xRead 15 October 2026The table lists only a plug and a 3.0 m cord. No battery, charging or wireless item is listed, 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.co.jp/product/ATH-M20xRead 15 October 2026Wired plug and cord only. The wireless ATH-M20xBT is a separate model

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.

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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.

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Bluetooth

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

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LE AudioiLE Audio playback support. Bluetooth Low Energy for app control alone does not count.

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

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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.

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

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Paired devices remembered

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

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Fast pairing

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Base station

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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.

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

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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

0 of 13 differ

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.

Not available

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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.co.jp/product/ATH-M20xRead 15 October 2026No battery, charging or wireless item in the table

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

Not available

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Controls

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Controls

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Volume control

None1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026No remote, control or microphone item in the table. The cord is a plain 3.0 m cord

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

Not available

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Voice assistant

Not available

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Comfort and build

4 of 11 differ

Headband type

Padded7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Well padded and adjustable. The page lists swivelling ear cups up to 90 degrees, which the maker page and SoundGuys do not confirm, so no swivel value is stored. Its weight lines (251 g and 200 g with cable) are inconsistent and are not used8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026Headband is comfortable, with padding similar to the other ATH-M headsets

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

Plastic with metal reinforcements8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026Lightweight plastic build save for metal reinforcements

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

Plastic8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026Matte plastic ear cups with a glossy black logo. The build is lightweight plastic apart from metal reinforcements. The review text says both that the ear cups rotate 15 degrees and that the ATH-M20x has no rotating ear cups, so no swivel value is stored.

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

Vinyl8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026Vinyl-covered ear pads

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

Replaceable ear pads

Yes1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Sold separately: replacement ear pads HP-M30x

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-over9Owner's manualdocs.audio-technica.com/eu/p52521_mseries_earpad_replacement.pdfRead 21 October 2026Audio-Technica instruction P52521 for HP-EP replacement earpads names the ATH-M20x among the models. 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

Not available

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Dust and water rating

Not available

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User-replaceable parts

Ear pads (HP-M30x)1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Sold separately: replacement ear pads HP-M30x

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

Not available

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User firmware updates

Not available

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Dimensions and weight

1 of 2 differ

Headset weightiPublished headset mass without detachable cable or microphone when stated. A fixed cable remains included. Any unqualified maker weight is identified in the source note.

190g(6.7 oz)1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 October 2026Mass without cord (質量(コード除く)): about 190 g. The cord is fixed, so the stored value excludes it, as the maker states3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Weight 190 g (6.7 oz) without cable and connector8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026Review page lists 190 g, the same as the maker

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

1 of 3 differ

Hi-Res Audio

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Communication certifications

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FCC ID

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Other certifications

EMC (2004/108/EC), RoHS (2011/65/EU)3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Declaration of Conformity TCF No. ATTWCE-HP140318001 (PDF page 9, dated 18 March 2014) covers ATH-M20x/30x/40x/50x. It states conformity with the EMC Directive 2004/108/EC (EN 55103, EN 55020) and the RoHS Directive 2011/65/EU (EN 50581:2012). Section 2.4 describes a microphone and is a copy error, so it is not used.

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In the box

3 of 3 differ

In the box

Headphones with fixed 3.0 m cable, 6.3 mm stereo plug adapter3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Accessory included: 6.3 mm (1/4 inch) snap-on adapter. No pouch or other accessory is listed4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 15 October 2026Accessories for the ATH-M20x: the 6.3 mm stereo plug adapter7Retailer pagethomannmusic.com/audio_technica_ath_m20x.htmRead 15 October 2026Incl. a 6.3 mm adapter8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026Ships with a 1/4 inch adapter and no other extras

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-M20x

Type	Length (m)	Count
Straight cable, fixed to the left ear cup	3	1

Source3Maker spec sheet (PDF)docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdfRead 15 October 2026Cable: 3.0 m (9.8 ft), straight, left-side exit. The MusicRadar copy of the maker release calls it permanently attached

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.

None8Measurementsoundguys.com/audio-technica-ath-m20x-review-63732Read 15 October 2026You don't get any extras, not even a carry bag

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

Not compared

Product page

www.audio-technica.co.jp/product/ATH-M20x1Maker product pageaudio-technica.co.jp/product/ATH-M20xRead 15 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 15 October 2026Official technical construction file TCF ATTWCE-HP140318001 dated 2014-03-18. The ATH-M20x 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 15 October 2026Shared ATH-M50x, ATH-M40x, ATH-M30x and ATH-M20x user manual with a Japanese and an English section

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

1 of 1 differ

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

1year4Owner's manualaudio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdfRead 15 October 2026Japanese warranty certificate: one year from purchase. It is valid only in Japan. 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.