HEADPHONES · YOUR NEXT FACE-OFF

Nothing CMF Buds 2a vs Beyerdynamic DT 1770 PRO MKII

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

Compared products

YOUR FIRST CHOICE

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

WHICH SUITS YOU?

Choose the Nothing CMF Buds 2a for

A wireless connection
Active noise cancellation: Yes vs No
Microphone: Yes vs No

Choose the Beyerdynamic DT 1770 PRO MKII for

A wired connection

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

See the 6 verified differences

THE CONTENDER

Beyerdynamic DT 1770 PRO MKII

1000310 · 30 ohm · black

Full product profile Official image

Exact model & source notes

The DT 1770 PRO MKII (article 1000310, black) is beyerdynamic's closed-back, around-ear studio headphone in its second generation, using 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 comes with velour and leatherette ear-pad sets, 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

Nothing CMF Buds 2a UK & US retailers

UK & US price history: no verified listing yet

Beyerdynamic DT 1770 PRO MKII 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

Microphone

A built-in microphone matters for calls and voice chat. An audio-only headphone connection does not supply a microphone channel.

Nothing CMF Buds 2aYes

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

Source 1

Beyerdynamic DT 1770 PRO MKIINo

Manufacturer specification · Stereo headphone plug; no microphone is listed.

Source 1 Source 2

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 ↓

6 verified differences, most decision-relevant first. 1 is also drawn in Visual facts above. Missing information stays separate.

Wired / wireless connections

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

Beyerdynamic DT 1770 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

Sources

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

Beyerdynamic DT 1770 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 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

Check the exact configuration and source conditions for your use.

Active noise cancellation

Nothing CMF Buds 2aYes

Beyerdynamic DT 1770 PRO MKIINo

Sources

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

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification · Passive closed-back isolation (rated ambient noise attenuation 25 dBA); no active noise cancellation.

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

Check the exact configuration and source conditions for your use.

Microphone

In Visual facts

Nothing CMF Buds 2aYes

Beyerdynamic DT 1770 PRO MKIINo

Sources

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

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification · Stereo headphone plug; no microphone is listed.

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

Check the exact configuration and source conditions for your use.

Battery life

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.

Beyerdynamic DT 1770 PRO MKIINot required: passive wired headphones powered by the audio source

Sources

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

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification · Passive headphones with no battery or charging.

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

Manufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.

Drivers

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

Beyerdynamic DT 1770 PRO MKIIDynamic TESLA.45 drivers, 45 mm diameter, PEEK polymer diaphragm

Sources

Nothing CMF Buds 2a

Manufacturer specification

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

Beyerdynamic DT 1770 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 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Wearing style

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

Beyerdynamic DT 1770 PRO MKIIOver-ear (circumaural), closed-back wired studio headphones

Sources

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

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

Check the exact configuration and source conditions for your use.

Missing or non-comparable evidence (28)

Acoustic design

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKIIClosed-back

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Nominal impedance

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII30 ohm

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Companion app

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

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Battery capacity

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

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

Nothing CMF Buds 2a

Manufacturer specification

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Cable length

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII5 m

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification · Longest supplied cable: 5 m coiled (stretched). A 3 m straight cable is also included.

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Charge time

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

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Bluetooth codecs

Nothing CMF Buds 2aAAC, SBC

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

Nothing CMF Buds 2a

Manufacturer specification

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

Beyerdynamic DT 1770 PRO MKII

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

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII3-pin mini-XLR (headphone end); gold-plated 3.5 mm stereo jack with 6.35 mm (1/4-inch) adapter

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Controls

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.

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Rated total harmonic distortion

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII0.20% at 100 Hz, 0.04% at 500 Hz, 0.1% at 1 kHz (at 1 mW)

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Driver diameter

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII45 mm

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

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

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)

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

Quick pairing

Nothing CMF Buds 2aGoogle Fast Pair and Microsoft Swift Pair

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Rated frequency range

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII5–40,000 Hz

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Nominal headband pressure

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII6 ±0.5 N

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

HEADPHONE LAB software

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKIISupported through a separate DAW plug-in, with individual factory calibration

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 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 1770 PRO MKII among the models offered FACTORY CALIBRATION, based on the production measurement data of the individual unit.

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic HEADPHONE LAB — plug-in features, formats and FACTORY CALIBRATION model list

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

In the box

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKIIHeadphones, velour ear pad set (slight bass boost), leatherette ear pad set (linear), 3 m straight cable, 5 m coiled cable, hard case

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Low lag mode

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

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Construction

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKIIRugged spring-steel headband; soft memory-foam headband pad with fontanelle recess for pressure relief

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 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' and states that the fontanelle recess avoids pain-sensitive areas on the head.

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Multipoint (dual connection)

Nothing CMF Buds 2aYes

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Ambient noise attenuation

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII25 dBA

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification · Passive attenuation rated by beyerdynamic.

beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Maximum input power

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII100 mW short-term; 30 mW continuous

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification

beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Rated sensitivity

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII95 dB SPL at 1 mW / 500 Hz; 110 dB SPL at 1 V / 500 Hz

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

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

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Serviceability

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKIIAlmost every part replaceable, including the headband and ear pads

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 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 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Sound features

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

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Dust, sweat and water resistance

Nothing CMF Buds 2aIP54 (earbuds)

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Weight per earbud

Nothing CMF Buds 2a4.28 g

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Dimensions

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)

Beyerdynamic DT 1770 PRO MKIINot verified

Sources

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

Beyerdynamic DT 1770 PRO MKII

No source recorded for this side.

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

Weight without cable

Nothing CMF Buds 2aNot verified

Beyerdynamic DT 1770 PRO MKII377 g

Sources

Nothing CMF Buds 2a

No source recorded for this side.

Beyerdynamic DT 1770 PRO MKII

Manufacturer specification · Headphones without cable.

beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — official North America store page and technical data beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)

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

Nothing CMF Buds 2a

Select a feature to check your fit.

YOUR CHOICE

Beyerdynamic DT 1770 PRO MKII

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

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

Beyerdynamic DT 1770 PRO MKII

What it brings

The closed design has a rated ambient noise attenuation of 25 dBA, and beyerdynamic describes the headphones as ideal for professional studio and monitoring applications.
Manufacturer source
Two ear-pad sets change the tuning: velour with a slight bass boost, or leatherette for a linear response; beyerdynamic states that almost every part of the headphones can be replaced.
Manufacturer source Manufacturer source

What to check

beyerdynamic rates it at 377 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
Isolation is passive only and there is no microphone, so it is not a substitute for active noise-cancelling travel headphones or a headset for calls.
Manufacturer source Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

34 of 34 specifications Sources in each row

Source-backed specifications for Nothing CMF Buds 2a and Beyerdynamic DT 1770 PRO MKII
Specification	Nothing CMF Buds 2a	Beyerdynamic DT 1770 PRO MKII

Wearing styleDifferent Sources 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 Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	In-ear, true wireless (ear tips in sizes S, M and L)	Over-ear (circumaural), closed-back wired studio headphones
Weight per earbud Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	4.28 g	Not provided
Dimensions Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	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)	Not provided
Dust, sweat and water resistance Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	IP54 (earbuds)	Not provided
Weight without cable Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Headphones without cable. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — official North America store page and technical data beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	377 g
Acoustic design Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	Closed-back
Nominal headband pressure Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	6 ±0.5 N
Serviceability Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 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 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	Almost every part replaceable, including the headband and ear pads
Construction Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 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' and states that the fontanelle recess avoids pain-sensitive areas on the head. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	Rugged spring-steel headband; soft memory-foam headband pad with fontanelle recess for pressure relief

Wired / wireless connectionsDifferent Sources 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 Beyerdynamic DT 1770 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 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Bluetooth 5.4 (AAC, SBC) with dual connection; USB-C charging on the case	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
Battery lifeDifferent Sources 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 Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Passive headphones with no battery or charging. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	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.	Not required: passive wired headphones powered by the audio source
Charge time Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	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	Not provided
Bluetooth codecs Sources Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Beyerdynamic DT 1770 PRO MKII No source recorded.	AAC, SBC	Not provided
Multipoint (dual connection) Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	Yes	Not provided
Low lag mode Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	110 ms with a Nothing phone in Game Mode	Not provided
Quick pairing Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	Google Fast Pair and Microsoft Swift Pair	Not provided
Battery capacity Sources Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Beyerdynamic DT 1770 PRO MKII No source recorded.	Earbuds 43 mAh each; case 460 mAh	Not provided
Cable length Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Longest supplied cable: 5 m coiled (stretched). A 3 m straight cable is also included. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	5 m
Supplied plug and adapter Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	3-pin mini-XLR (headphone end); gold-plated 3.5 mm stereo jack with 6.35 mm (1/4-inch) adapter

DriversDifferent Sources Nothing CMF Buds 2a Manufacturer specification Nothing (UK store, nothing.tech) — CMF Buds 2a product page with technical specifications Beyerdynamic DT 1770 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 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Custom 12.4 mm dynamic driver, bio-fibre + custom TPU diaphragm, Dirac tuning	Dynamic TESLA.45 drivers, 45 mm diameter, PEEK polymer diaphragm
Sound features Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	Dirac, Ultra Bass Technology, Custom EQ; tuning by Nothing and Dirac	Not provided
Driver diameter Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Diameter of each TESLA.45 driver as stated on the product page. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)	Not provided	45 mm
Nominal impedance Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	30 ohm
Rated frequency range Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	5–40,000 Hz
Rated sensitivity Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Two references are given: per 1 mW and per 1 V, both at 500 Hz. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	95 dB SPL at 1 mW / 500 Hz; 110 dB SPL at 1 V / 500 Hz
Rated total harmonic distortion Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	0.20% at 100 Hz, 0.04% at 500 Hz, 0.1% at 1 kHz (at 1 mW)
Maximum input power Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	100 mW short-term; 30 mW continuous

MicrophoneDifferent Sources 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 Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Stereo headphone plug; no microphone is listed. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Yes	No
Active noise cancellationDifferent Sources 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 Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Passive closed-back isolation (rated ambient noise attenuation 25 dBA); no active noise cancellation. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Yes	No
Ambient noise attenuation Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification · Passive attenuation rated by beyerdynamic. beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	25 dBA

Companion app Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	Nothing X app (Android and iOS): customise equaliser and controls, find my earbuds, low lag mode, software updates	Not provided
Controls Sources 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 Beyerdynamic DT 1770 PRO MKII No source recorded.	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.	Not provided
HEADPHONE LAB software Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 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 1770 PRO MKII among the models offered FACTORY CALIBRATION, based on the production measurement data of the individual unit. beyerdynamic DT 1770 PRO MKII — official product page and technical data (global store)beyerdynamic HEADPHONE LAB — plug-in features, formats and FACTORY CALIBRATION model list	Not provided	Supported through a separate DAW plug-in, with individual factory calibration

In the box Sources Nothing CMF Buds 2a No source recorded. Beyerdynamic DT 1770 PRO MKII Manufacturer specification beyerdynamic DT 1770 PRO MKII — spec sheet E1/DT 1770 PRO MKII (10.24)	Not provided	Headphones, velour ear pad set (slight bass boost), leatherette ear pad set (linear), 3 m straight cable, 5 m coiled cable, hard case

First product manufacturer source Second product manufacturer source

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