HEADPHONES · YOUR NEXT FACE-OFF

Beyerdynamic DT 1990 PRO MKII vs Nothing CMF Buds 2a

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

Beyerdynamic DT 1990 PRO MKII

1000303 · 30 ohm · black

Full product profile Official image

Exact model & source notes

The DT 1990 PRO MKII (article 1000303, black) is the second generation of beyerdynamic's open-back, around-ear studio headphone, with 45 mm TESLA.45 dynamic drivers at 30 ohms and a detachable, lockable mini-XLR cable. A spring-steel headband carries a headband pad with a fontanelle recess for pressure relief. It ships with two ear-pad sets tuned differently, two cables and a hard case, and works with beyerdynamic's free HEADPHONE LAB plug-in, which offers individual factory calibration for this model.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

WHICH SUITS YOU?

Choose the Beyerdynamic DT 1990 PRO MKII for

A wired connection

Choose the Nothing CMF Buds 2a for

A wireless connection

Built from verified specifications that differ. Not a rating or a recommendation.

See the 3 verified differences

THE CONTENDER

Nothing CMF Buds 2a

6974434225138 · Orange · UK

CMF Buds 2a orange earbuds in an open orange charging case marked Buds 2A

Full product profile Official image

Exact model & source notes

CMF Buds 2a (store SKU 6974434225138 in Orange on the UK and US Nothing stores) are true wireless earbuds with ANC up to 42 dB, a 12.4 mm bio-fibre driver, four microphones and Bluetooth 5.4 with dual connection.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

Beyerdynamic DT 1990 PRO MKII UK & US retailers

UK & US price history: no verified listing yet

Nothing CMF Buds 2a UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison

Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.

FEATURES SIDE BY SIDE6 topics

Yes and No describe the listed feature. Missing evidence stays unverified.

SELECTED TOPIC

01 / 06

Open-back design

Open-back earcups are not sealed. Start here if your listening space is quiet; this construction is not a sound-quality rating.

Beyerdynamic DT 1990 PRO MKIIYes

Open-back. Manufacturer specification

Source 1 Source 2

Nothing CMF Buds 2aNot verified

Choose your must-haves

Start with your listening environment. Open and closed earcups suit different surroundings. A closed back is not the same as active noise cancellation. Check the exact cable and headphone output. We do not turn impedance, driver size or unpaired lab results into a sound-quality score.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

3 verified differences, most decision-relevant first. Missing information stays separate.

Wired / wireless connections

Beyerdynamic DT 1990 PRO MKIIWired; detachable, lockable single-sided cable with 3-pin mini-XLR at the headphone and 3.5 mm stereo jack with 6.35 mm (1/4-inch) adapter

Nothing CMF Buds 2aBluetooth 5.4 (AAC, SBC) with dual connection; USB-C charging on the case

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · The product page's technical table words the plug as '3-pin XLR plug, 6.35 mm (1/4") stereo jack plug'; the spec sheet specifies a 3-pin mini-XLR cable connector at the headphone and a 3.5 mm jack with 6.35 mm adapter.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

Manufacturer specification · The manufacturer lists AAC and SBC codec support; support for other codecs remains unverified. Charging is quoted with a Type-C cable.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Check the exact configuration and source conditions for your use.

Driver construction

Beyerdynamic DT 1990 PRO MKIIDynamic TESLA.45 drivers, 45 mm diameter, PEEK polymer diaphragm

Nothing CMF Buds 2aCustom 12.4 mm dynamic driver, bio-fibre + custom TPU diaphragm, Dirac tuning

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · beyerdynamic states the headphones are equipped with two TESLA.45 drivers, each measuring 45 mm in diameter, and that the diaphragm is made of PEEK polymer (product page FAQ). The spec sheet gives the transducer type as dynamic.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

Manufacturer specification

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Check whether the diameter describes the complete transducer or only its diaphragm. Different labels and driver sizes do not establish better sound.

Wearing style

Beyerdynamic DT 1990 PRO MKIIOver-ear (circumaural), open-back wired studio headphones

Nothing CMF Buds 2aIn-ear, true wireless (ear tips in sizes S, M and L)

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

Manufacturer specification · A pair of earbuds and a charging case (with a lanyard hole); ear tips in sizes S, M and L are in the box. Nothing does not state the ear tip material.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Check the exact configuration and source conditions for your use.

Missing or non-comparable evidence (31)

Acoustic design

Beyerdynamic DT 1990 PRO MKIIOpen-back

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Active noise cancellation

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aYes

Sources

Beyerdynamic DT 1990 PRO MKII

The complete exact sources establish an open dynamic wired design but do not explicitly negate active noise cancellation. Open construction and omission of ANC do not establish a false capability. · Manufacturer specification

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

Manufacturer specification · ANC up to 42 dB (Nothing's laboratory theoretical maximum) over up to 2900 Hz, with Adaptive ANC and Transparency mode.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Microphone

In Visual facts

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aYes

Sources

Beyerdynamic DT 1990 PRO MKII

The complete exact sources list the headphone and accessories but do not explicitly establish absence of a microphone. An omitted microphone and a stereo headphone plug alone cannot become a sourced false capability. · Manufacturer specification

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

Manufacturer specification · Four HD microphones in total (two per bud) with Clear Voice Technology and Wind Noise Reduction 2.0.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Battery life

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aEarbuds up to 5 hours with ANC on and 8 hours with ANC off; with the charging case 23 hours with ANC on and 35.5 hours with ANC off.

Sources

Beyerdynamic DT 1990 PRO MKII

The retained exact sources do not explicitly establish battery life or that no battery is required for operation. Do not infer a not-applicable operating requirement from analogue/dynamic construction or a battery-included No row. · Manufacturer specification

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

Manufacturer specification · Nothing laboratory results at 25 °C, 50% volume, AAC, other features at default settings; actual life varies with use. Talk time is listed separately (earbuds 3.5 h ANC on / 4 h ANC off; with case 15.6 h / 18.4 h).

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Nominal impedance

Beyerdynamic DT 1990 PRO MKII30 ohm

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Companion app

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aNothing X app (Android and iOS): customise equaliser and controls, find my earbuds, low lag mode, software updates

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification · Nothing says all these features are available on Nothing OS and in the Nothing X app for iOS and other Android devices (Android 6.0 and above, iOS 13 and above); on Nothing OS 1.5.6 and higher the settings are built into the phone.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Battery capacity

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aEarbuds 43 mAh each; case 460 mAh

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Cable length

Beyerdynamic DT 1990 PRO MKII3 m

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · Supplied straight cable. A separate 5 m coiled cable is also supplied; its 5 m rating is explicitly stretched, not a relaxed straight-cable length.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Charge time

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aFull charge (0-100%) in 89 minutes with the case connected to a USB-C cable; with the case unplugged, the earbuds charge inside it in 57 minutes

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification · Fast charge: after a 10-minute charge, up to 5.5 hours of playback with the case or 2 hours without it (ANC off, 50% volume, AAC, Nothing laboratory, 25 °C).

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Bluetooth codecs

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aAAC, SBC

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Coiled cable length, stretched

Beyerdynamic DT 1990 PRO MKII5 m

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · Separate supplied coiled cable; 5 m is explicitly measured stretched. A 3 m straight cable is also supplied.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Supplied plug and adapter

Beyerdynamic DT 1990 PRO MKII3-pin mini-XLR (headphone end); gold-plated 3.5 mm stereo jack with 6.35 mm (1/4-inch) adapter

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Controls

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aTouch controls: double tap to skip forward or answer/hang up calls; triple tap to skip back or reject calls; tap and hold to switch between Active Noise Cancellation and Transparency Mode.

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification · Customisable (footnote 7): double tap, triple tap, tap & hold and double tap & hold can be set to next song, previous song, volume up, volume down, voice assistant or switching noise cancellation modes, via phone settings on Nothing OS 1.5.6+ or the Nothing X app on Android 6.0+/iOS 13+.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated total harmonic distortion

Beyerdynamic DT 1990 PRO MKII0.20% at 100 Hz, 0.06% at 500 Hz, 0.08% at 1 kHz (at 1 mW)

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Driver diameter

Beyerdynamic DT 1990 PRO MKII45 mm

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · Diameter of each TESLA.45 driver as stated on the product page.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Quick pairing

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aGoogle Fast Pair and Microsoft Swift Pair

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification · Fast Pair works on supported Android devices running Google Play services 11.7+ (back to Android 6.0); Find My and device renaming support need Android 10 or later.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated frequency range

Beyerdynamic DT 1990 PRO MKII5–40,000 Hz

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Nominal headband pressure

Beyerdynamic DT 1990 PRO MKII6 ±0.5 N

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

HEADPHONE LAB software

Beyerdynamic DT 1990 PRO MKIISupported through a separate DAW plug-in, with individual factory calibration

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · Free plug-in for DAW software (VST3, AU and AAX for Windows and macOS) with crossfeed and optional room simulation; there is no standalone version. beyerdynamic lists the DT 1990 PRO MKII among the models offered FACTORY CALIBRATION, based on the production measurement data of the individual unit.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic HEADPHONE LAB — plug-in features, formats and FACTORY CALIBRATION model list

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

In the box

Beyerdynamic DT 1990 PRO MKIIHeadphones, 'Producing' velour ear pad set (slight bass boost), 'Mixing & Mastering' velour ear pad set (linear), 3 m straight cable, 5 m coiled cable, hard case

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Low lag mode

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2a110 ms with a Nothing phone in Game Mode

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification · The Other features table says 'less than 110 ms under Game Mode' with a Nothing Phone; footnote 5 says latency can be reduced to as low as 110 ms with Nothing phones and Game Mode on. Source field: Low lag mode.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Construction

Beyerdynamic DT 1990 PRO MKIIRugged spring-steel headband; headband pad of soft memory foam and leatherette with fontanelle recess for pressure relief

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · Spec sheet features: 'Rugged spring steel headband construction' and 'Headband pad with fontanelle recess for pressure relief'. The product page highlights 'High wearing comfort thanks to fontanelle recess', describes the headband as soft memory foam and durable leatherette, and states that the fontanelle recess avoids potentially pain-sensitive areas on the head.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Multipoint (dual connection)

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aYes

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Maximum input power

Beyerdynamic DT 1990 PRO MKII100 mW short-term; 30 mW continuous

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification

beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated sensitivity

Beyerdynamic DT 1990 PRO MKII94 dB SPL at 1 mW / 500 Hz; 110 dB SPL at 1 V / 500 Hz

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · Two references are given: per 1 mW and per 1 V, both at 500 Hz.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Serviceability

Beyerdynamic DT 1990 PRO MKIIAlmost every part replaceable, including the headband and ear pads

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · beyerdynamic's product page states that almost every part of the headphones can be replaced and that the headband and ear pads can be replaced if necessary; the spec sheet words it more broadly: 'All components can be replaced'.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Sound features

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aDirac, Ultra Bass Technology, Custom EQ; tuning by Nothing and Dirac

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification · The Sound features table says 'Ultra Bass Technology'; the product copy calls it 'Ultra Bass Technology 2.0'.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Dust, sweat and water resistance

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aIP54 (earbuds)

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

The specification lists 'IPX2 case', but footnote 4 says the IP54 test applies to the earbuds and 'the charging case is not supported'; the case rating is therefore left out. · Manufacturer specification

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Weight per earbud

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2a4.28 g

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification · Each earbud. The charging case weighs 42.75 g.

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Dimensions

Beyerdynamic DT 1990 PRO MKIINot verified

Nothing CMF Buds 2aEach earbud 32.5 x 20.3 x 24.3 mm; charging case 54.7 x 54.7 x 23 mm (height x width x depth)

Sources

Beyerdynamic DT 1990 PRO MKII

No source recorded for this side.

Nothing CMF Buds 2a

Manufacturer specification

Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Weight without cable

Beyerdynamic DT 1990 PRO MKII376 g

Nothing CMF Buds 2aNot verified

Sources

Beyerdynamic DT 1990 PRO MKII

Manufacturer specification · Headphones without cable.

beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — official North America store page and technical data beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24)

Nothing CMF Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

0 shared fields have the same recorded value.

YOUR HEADPHONES. YOUR RULES.

Check against your must-haves

Feature matching for the features you select. It doesn’t rate sound or comfort.

Start with your listening setup.

Choose a starting point, then fine-tune your must-haves.

FINE-TUNE THE DETAILS

Your essentials.

These shortcuts select the features shown above. Check the fit against your own equipment and listening space.

A feature match describes the selected requirements. It doesn’t rate sound or comfort.

Open-back designFor a quiet listening spaceClosed-back designAn enclosed outer earcupDetachable cableUnplug the cable at the headphonesBuilt-in microphoneFor calls and voice chatActive noise cancellationNot the same as a closed back

YOUR CHOICE

Beyerdynamic DT 1990 PRO MKII

Select a feature to check your fit.

YOUR CHOICE

Nothing CMF Buds 2a

Select a feature to check your fit.

Feature matching, not a sound-quality score. The specification table links to the evidence for each feature.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

Beyerdynamic DT 1990 PRO MKII

What it brings

Two velour ear-pad sets are supplied: 'Producing' with a slight bass boost and 'Mixing & Mastering' for a linear response, so the tuning can be changed by swapping pads.
Manufacturer source
beyerdynamic states that almost every part of the headphones can be replaced, including the headband and ear pads, and the single-sided mini-XLR cable is detachable and can be locked.
Manufacturer source Manufacturer source

What to check

beyerdynamic rates it at 376 g without cable and a nominal headband pressure of 6 ±0.5 N; anyone sensitive to weight or clamping force over long sessions should weigh these figures.
Manufacturer source Manufacturer source
The supplied analogue cables use a 3.5 mm stereo plug with a 6.35 mm adapter.
Manufacturer source Manufacturer source

Nothing CMF Buds 2a

What it brings

They include Adaptive ANC, Transparency mode, dual connection and find my earbuds support.
Manufacturer source
Each earbud weighs 4.28 g and the case 42.75 g, and the case has a lanyard hole for carrying.
Manufacturer source

What to check

Rated playback is 8 hours per charge and 35.5 hours with the case with ANC off, falling to 5 and 23 hours with ANC on.
Manufacturer source
ANC is rated to 42 dB over up to 2900 Hz, calls use four microphones (two per earbud), the listed codecs are AAC and SBC, and the IP54 rating covers the earbuds but not the charging case.
Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

34 of 34 specifications Sources in each row

Source-backed specifications for Beyerdynamic DT 1990 PRO MKII and Nothing CMF Buds 2a
Specification	Beyerdynamic DT 1990 PRO MKII	Nothing CMF Buds 2a

Wearing styleDifferent Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a Manufacturer specification · A pair of earbuds and a charging case (with a lanyard hole); ear tips in sizes S, M and L are in the box. Nothing does not state the ear tip material. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Over-ear (circumaural), open-back wired studio headphones	In-ear, true wireless (ear tips in sizes S, M and L)
Weight without cable Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · Headphones without cable. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — official North America store page and technical data beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	376 g	Not provided
Acoustic design Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	Open-back	Not provided
Nominal headband pressure Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	6 ±0.5 N	Not provided
Serviceability Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · beyerdynamic's product page states that almost every part of the headphones can be replaced and that the headband and ear pads can be replaced if necessary; the spec sheet words it more broadly: 'All components can be replaced'. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	Almost every part replaceable, including the headband and ear pads	Not provided
Construction Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · Spec sheet features: 'Rugged spring steel headband construction' and 'Headband pad with fontanelle recess for pressure relief'. The product page highlights 'High wearing comfort thanks to fontanelle recess', describes the headband as soft memory foam and durable leatherette, and states that the fontanelle recess avoids potentially pain-sensitive areas on the head. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	Rugged spring-steel headband; headband pad of soft memory foam and leatherette with fontanelle recess for pressure relief	Not provided
Weight per earbud Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification · Each earbud. The charging case weighs 42.75 g. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	4.28 g
Dimensions Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Each earbud 32.5 x 20.3 x 24.3 mm; charging case 54.7 x 54.7 x 23 mm (height x width x depth)
Dust, sweat and water resistance Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a The specification lists 'IPX2 case', but footnote 4 says the IP54 test applies to the earbuds and 'the charging case is not supported'; the case rating is therefore left out. · Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	IP54 (earbuds)

Wired / wireless connectionsDifferent Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · The product page's technical table words the plug as '3-pin XLR plug, 6.35 mm (1/4") stereo jack plug'; the spec sheet specifies a 3-pin mini-XLR cable connector at the headphone and a 3.5 mm jack with 6.35 mm adapter. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a Manufacturer specification · The manufacturer lists AAC and SBC codec support; support for other codecs remains unverified. Charging is quoted with a Type-C cable. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Wired; detachable, lockable single-sided cable with 3-pin mini-XLR at the headphone and 3.5 mm stereo jack with 6.35 mm (1/4-inch) adapter	Bluetooth 5.4 (AAC, SBC) with dual connection; USB-C charging on the case
Battery life Sources Beyerdynamic DT 1990 PRO MKII The retained exact sources do not explicitly establish battery life or that no battery is required for operation. Do not infer a not-applicable operating requirement from analogue/dynamic construction or a battery-included No row. · Manufacturer specification beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a Manufacturer specification · Nothing laboratory results at 25 °C, 50% volume, AAC, other features at default settings; actual life varies with use. Talk time is listed separately (earbuds 3.5 h ANC on / 4 h ANC off; with case 15.6 h / 18.4 h). Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not listed by the manufacturer	Earbuds up to 5 hours with ANC on and 8 hours with ANC off; with the charging case 23 hours with ANC on and 35.5 hours with ANC off.
Cable length Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · Supplied straight cable. A separate 5 m coiled cable is also supplied; its 5 m rating is explicitly stretched, not a relaxed straight-cable length. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	3 m	Not provided
Supplied plug and adapter Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	3-pin mini-XLR (headphone end); gold-plated 3.5 mm stereo jack with 6.35 mm (1/4-inch) adapter	Not provided
Coiled cable length, stretched Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · Separate supplied coiled cable; 5 m is explicitly measured stretched. A 3 m straight cable is also supplied. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	5 m	Not provided
Charge time Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification · Fast charge: after a 10-minute charge, up to 5.5 hours of playback with the case or 2 hours without it (ANC off, 50% volume, AAC, Nothing laboratory, 25 °C). Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Full charge (0-100%) in 89 minutes with the case connected to a USB-C cable; with the case unplugged, the earbuds charge inside it in 57 minutes
Bluetooth codecs Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	AAC, SBC
Multipoint (dual connection) Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Yes
Low lag mode Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification · The Other features table says 'less than 110 ms under Game Mode' with a Nothing Phone; footnote 5 says latency can be reduced to as low as 110 ms with Nothing phones and Game Mode on. Source field: Low lag mode. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	110 ms with a Nothing phone in Game Mode
Quick pairing Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification · Fast Pair works on supported Android devices running Google Play services 11.7+ (back to Android 6.0); Find My and device renaming support need Android 10 or later. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Google Fast Pair and Microsoft Swift Pair
Battery capacity Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Earbuds 43 mAh each; case 460 mAh

Driver constructionDifferent Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · beyerdynamic states the headphones are equipped with two TESLA.45 drivers, each measuring 45 mm in diameter, and that the diaphragm is made of PEEK polymer (product page FAQ). The spec sheet gives the transducer type as dynamic. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Dynamic TESLA.45 drivers, 45 mm diameter, PEEK polymer diaphragm	Custom 12.4 mm dynamic driver, bio-fibre + custom TPU diaphragm, Dirac tuning
Driver diameter Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · Diameter of each TESLA.45 driver as stated on the product page. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store) Nothing CMF Buds 2a No source recorded.	45 mm	Not provided
Nominal impedance Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	30 ohm	Not provided
Rated frequency range Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	5–40,000 Hz	Not provided
Rated sensitivity Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · Two references are given: per 1 mW and per 1 V, both at 500 Hz. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	94 dB SPL at 1 mW / 500 Hz; 110 dB SPL at 1 V / 500 Hz	Not provided
Rated total harmonic distortion Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	0.20% at 100 Hz, 0.06% at 500 Hz, 0.08% at 1 kHz (at 1 mW)	Not provided
Maximum input power Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	100 mW short-term; 30 mW continuous	Not provided
Sound features Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification · The Sound features table says 'Ultra Bass Technology'; the product copy calls it 'Ultra Bass Technology 2.0'. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Dirac, Ultra Bass Technology, Custom EQ; tuning by Nothing and Dirac

Microphone Sources Beyerdynamic DT 1990 PRO MKII The complete exact sources list the headphone and accessories but do not explicitly establish absence of a microphone. An omitted microphone and a stereo headphone plug alone cannot become a sourced false capability. · Manufacturer specification beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a Manufacturer specification · Four HD microphones in total (two per bud) with Clear Voice Technology and Wind Noise Reduction 2.0. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Not listed by the manufacturer	Yes
Active noise cancellation Sources Beyerdynamic DT 1990 PRO MKII The complete exact sources establish an open dynamic wired design but do not explicitly negate active noise cancellation. Open construction and omission of ANC do not establish a false capability. · Manufacturer specification beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a Manufacturer specification · ANC up to 42 dB (Nothing's laboratory theoretical maximum) over up to 2900 Hz, with Adaptive ANC and Transparency mode. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications	Not listed by the manufacturer	Yes

HEADPHONE LAB software Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification · Free plug-in for DAW software (VST3, AU and AAX for Windows and macOS) with crossfeed and optional room simulation; there is no standalone version. beyerdynamic lists the DT 1990 PRO MKII among the models offered FACTORY CALIBRATION, based on the production measurement data of the individual unit. beyerdynamic DT 1990 PRO MKII — official product page and technical data (global store)beyerdynamic HEADPHONE LAB — plug-in features, formats and FACTORY CALIBRATION model list Nothing CMF Buds 2a No source recorded.	Supported through a separate DAW plug-in, with individual factory calibration	Not provided
Companion app Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification · Nothing says all these features are available on Nothing OS and in the Nothing X app for iOS and other Android devices (Android 6.0 and above, iOS 13 and above); on Nothing OS 1.5.6 and higher the settings are built into the phone. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Nothing X app (Android and iOS): customise equaliser and controls, find my earbuds, low lag mode, software updates
Controls Sources Beyerdynamic DT 1990 PRO MKII No source recorded. Nothing CMF Buds 2a Manufacturer specification · Customisable (footnote 7): double tap, triple tap, tap & hold and double tap & hold can be set to next song, previous song, volume up, volume down, voice assistant or switching noise cancellation modes, via phone settings on Nothing OS 1.5.6+ or the Nothing X app on Android 6.0+/iOS 13+. Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Nothing (US store, us.nothing.tech) — CMF Buds 2a product page with technical specifications	Not provided	Touch controls: double tap to skip forward or answer/hang up calls; triple tap to skip back or reject calls; tap and hold to switch between Active Noise Cancellation and Transparency Mode.

In the box Sources Beyerdynamic DT 1990 PRO MKII Manufacturer specification beyerdynamic DT 1990 PRO MKII — spec sheet E1/DT 1990 PRO MKII (10.24) Nothing CMF Buds 2a No source recorded.	Headphones, 'Producing' velour ear pad set (slight bass boost), 'Mixing & Mastering' velour ear pad set (linear), 3 m straight cable, 5 m coiled cable, hard case	Not provided

First product manufacturer source Second product manufacturer source

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