Headsets and headphones / Compare

Nothing Headphone (1) Pro vs Sennheiser HD 550

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Product A: Nothing

Headphone (1) Pro

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B

Product B: Sennheiser

HD 550

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Every value links to where we found it.

Only differences

ANothing Headphone (1) Pro

BSennheiser HD 550

General

5 of 8 differ

Series

Not available

HD 5001Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 2 identifies HD 500 series.

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

A11300047, A113000482Retailer pageldlc.com/fiche/PB00757004.htmlRead 14 October 2026LDLC Black listing: Modele A11300048. The White listing (PB00757005) shows A11300047. These look like Nothing part numbers. The maker does not publish a hardware model such as B1xx.

HD 550, 7004551Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

GTIN / EAN

Not available

4260752333498, 8100912735861Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 3 Technical Data. Maker V02 EN, February 17 2025, mirrored by Geizhals.

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

29 September 20266Press articlekopfhoerer.deRead 14 October 2026Article dated 29.09.2026. The Nothing launch was reported the same day. A Nothing press release was not found.

19 March 20252Press releasecdn.uc.assets.prezly.com/125ff0a6-9592-4c48-be8d-28f7b3273ca5/-/inline/no/Press_Release_Sennheiser_HD_550_EN.pdfRead 23 October 2026

Status

Available1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Product page shows Add to bag. One colour button also reads Sold Out in the page text.

Available3Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026

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

Not available

Not available

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

Not available

Not available

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

$3991Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026$399 on the Nothing US store.3Reviewtomsguide.com/audio/over-ear-headphones/nothing-headphone-1-pro-reviewRead 14 October 2026$399 / 349 GBP.8Reviewslashgear.com/2271316/nothing-headphone-1-pro-reviewRead 14 October 2026The Nothing Headphone (1) Pro will cost $399.9Reviewt3.com/tech/headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Launches at $399 in the US and 349 GBP in the UK.

$299.952Press releasecdn.uc.assets.prezly.com/125ff0a6-9592-4c48-be8d-28f7b3273ca5/-/inline/no/Press_Release_Sennheiser_HD_550_EN.pdfRead 23 October 2026Page 3 launch MSRP $299.95 USD before tax.

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.

€3496Press articlekopfhoerer.deRead 14 October 2026349 Euro UVP in Germany. CHF 329 in Switzerland. German list prices include VAT.7Reviewirishexaminer.com/business/technology/arid-41921737.htmlRead 14 October 2026The reviewer calls them 349 euro headphones.

€299.92Press releasecdn.uc.assets.prezly.com/125ff0a6-9592-4c48-be8d-28f7b3273ca5/-/inline/no/Press_Release_Sennheiser_HD_550_EN.pdfRead 23 October 2026Page 3 launch MSRP EUR 299.90, including VAT as published.

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

Not available

Not available

ColoursiThe maker's own colour names

White, Black1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Colour options White and Black.6Press articlekopfhoerer.deRead 14 October 2026Schwarz, Weiss (Black, White).

Black7Reviewtechradar.com/gaming/sennheiser-hd-550-reviewRead 23 October 2026Design describes black finish.

Segment

Music1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Maker markets studio-level precision and tuning with Metropolis Studios for music listening, with a Flat EQ mode for reviewing, producing and mixing. Stored as music, the closest option for a general headphone.

Music3Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026Maker categorizes these as audiophile headphones for critical music listening.

Design

2 of 7 differ

Form factor

Over-ear2Retailer pageldlc.com/fiche/PB00757004.htmlRead 14 October 2026Circumaural (over-ear) per the LDLC listing.3Reviewtomsguide.com/audio/over-ear-headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Filed under over-ear headphones.4Reviewsoundguys.com/nothing-headphone-1-pro-review-163291Read 14 October 2026Listed under over-ear headphones.5Reviewsoundguys.com/product/nothing-headphone-1-proRead 14 October 2026Over-ear headphones category.

Over-ear4Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 3 technical specifications: wired headband, over-ear circumaural, open-back.

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

Closed2Retailer pageldlc.com/fiche/PB00757004.htmlRead 14 October 2026Fiche technique: Configuration du casque Ferme, Couplage auriculaire Circumaural.3Reviewtomsguide.com/audio/over-ear-headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Key specs: Headphone style Closed back.5Reviewsoundguys.com/product/nothing-headphone-1-proRead 14 October 2026Spec table: Acoustic design Closed-back.

Open4Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

Wearing style

Headband1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Headband with ear cups.

Headband4Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

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

None2Retailer pageldlc.com/fiche/PB00757004.htmlRead 14 October 2026Fiche technique: Pliable Non.5Reviewsoundguys.com/product/nothing-headphone-1-proRead 14 October 2026Spec table: Foldable No.

None11Measurementdiyaudioheaven.wordpress.com/measurements/brands-s-se/hd550Read 23 October 2026Specifications explicitly says collapsible No.

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

Not available

Yes11Measurementdiyaudioheaven.wordpress.com/measurements/brands-s-se/hd550Read 23 October 2026Build description distinguishes sideways swivel from limited vertical tilt.

RGB lighting

Not available

Not available

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

Not available

Not available

Drivers and sound

14 of 20 differ

Driver type

Hybrid1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Triple driver architecture: 40 mm dynamic bass driver, precision dynamic driver and a solid-state xMEMS treble driver. Stored as hybrid because the drivers are of different types.

Dynamic5Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

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

40mm1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Bass Dynamic Driver, 40 mm. Precision dynamic driver is 13 x 8 mm. xMEMS driver is 3.2 x 6.0 x 1.15 mm.

38mm6Press releasecdn.uc.assets.prezly.com/125ff0a6-9592-4c48-be8d-28f7b3273ca5/-/inline/no/Press_Release_Sennheiser_HD_550_EN.pdfRead 23 October 2026Page 1 custom 38 mm transducer.

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

31Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Three drivers per earcup: bass, precision and treble. Tom's Guide says three drivers in each earcup.3Reviewtomsguide.com/audio/over-ear-headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Triple-driver setup in each earcup.

Not available

Diaphragm material

Bass driver: PET dome with electroplated metal-ceramic and PEEK + PU surround. Precision driver: PEN. Treble xMEMS driver: silicon1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Spec table: Dome PET + Electroplated Metal-Ceramic. Surround PEEK + PU. Diaphragm PEN (Polyethylene Naphthalate) and Silicone. Order of drivers follows the page copy: PET dome bass, PEN diaphragm precision, silicon xMEMS treble.

Laminate plastic foil7Reviewtechradar.com/gaming/sennheiser-hd-550-reviewRead 23 October 2026Design and features quotes maker on diaphragm construction.

Magnet

Not available

Not available

Frequency response (wired or passive)iPublished acoustic range for wired listening, or the maker’s single range when no mode is distinguished. Power state and test standard belong in the source note.

Min20 HzMax40 kHz1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Spec table: 20 Hz - 40,000 Hz. Power state and test standard are not stated. Applies to the whole triple driver system.

Min6 HzMax39.5 kHz5Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

Wireless audio transmission bandiFrequency range of audio transmitted over the wireless connection, not the acoustic response of the driver. Codec, sampling rate and bitrate conditions belong in the source note. When the maker gives a range per codec, the widest range is stored and its codec goes in the source note.

Not available

Not available

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

Not available

150Ω5Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

Sensitivity (passive when specified)iUse the headset-off figure when both powered and passive values exist. The power or voltage reference, test distance and frequency belong in the source note.

Not available

106.7dB5Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 3: 106.7 dB SPL at 1 kHz / 1 Vrms.

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

Not available

Per 1 V5Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

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

Not available

0.2%5Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 3: less than 0.2% at 1 kHz / 90 dB SPL. Stored upper bound.

Max input power

Not available

Not available

Max digital audio sample rateiHighest supported digital audio sample rate over a USB cable or wireless dongle. This is not the microphone rate or acoustic frequency response.

192kHz1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Lossless USB-C audio up to 24-bit/192 kHz. Hi-Res AUX audio is up to 24-bit/96 kHz.4Reviewsoundguys.com/nothing-headphone-1-pro-review-163291Read 14 October 2026The USB-C port carries a digital signal to the onboard DAC. The DAC supports up to 24-bit/192kHz files.

Not available

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

24bits1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Lossless USB-C audio up to 24-bit/192 kHz.

Not available

DAC

Not available

Not available

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

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Personal Sound in Nothing X creates an EQ for how you hear. Gizmodo and SoundGuys describe a hearing test in the app.4Reviewsoundguys.com/nothing-headphone-1-pro-review-163291Read 14 October 2026Nothing X has a personal sound test.

Not available

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

Not available

No12Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026Maker explicitly describes a direct analog signal path with no electronics. No powered noise cancellation, digital USB audio or stored electronic equalizer.

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

Not available

Not available

EQ presets

Neo-Jazz, Rock, UK Rap + Grime, Electronica, Bass1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Metropolis Studios tuned five EQ profiles: Neo-Jazz, Rock, UK Rap + Grime, Electronica and Bass. They are in the EQ Library on Nothing X. The page also lists Standard and Flat EQ as the tunings.

Not available

Volume limit

Not available

Not available

Spatial audio

2 of 3 differ

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

Dynamic Spatial Audio1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Dynamic Spatial Audio with head tracking. Environments: Standard, Studio B, Live House, Club, Concert Hall.

Not available

Spatial audio licence includediA paid spatial-audio licence is bundled or embedded. Compatibility with a separately purchased app does not count.

Not available

Not available

Head tracking

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Spatial audio with head tracking is listed in the sound features.

Not available

Noise cancelling

6 of 10 differ

Active noise cancelling

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Adaptive Active Noise Cancellation with 10 mics.

No12Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026Maker explicitly describes a direct analog signal path with no electronics. No powered noise cancellation, digital USB audio or stored electronic equalizer.

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

Hybrid1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Spec table: 5 mic hybrid ANC (single side). The page says three feed-forward and two feedback mics on each side.

Not available

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

101Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Total 10 mics: five per side.

Not available

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

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Automatically switches between modes based on real-time analysis of the background and the fit of the ear cups.

Not available

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

Not available

Not available

ANC attenuation (claimed)

46dB1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Up to 46 dB at 2000 Hz. Footnote: theoretical maximum from the Nothing laboratory. Actual noise cancellation varies with the environment.10Reviewcreativebloq.com/tech/headphones-earbuds/nothing-headphone-1-pro-review-better-headphones-but-should-you-upgradeRead 14 October 2026Adaptive, rated up to 46 dB, 10 microphones.

Not available

Transparency mode

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Transparency mode lets the world in, keeping voices natural.

Not available

Adjustable transparency

Not available

Not available

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

Not available

Not available

Wind noise reduction

Not available

Not available

Measured

2 of 21 differ

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

Not available

Bass rolls off gently below 25 Hz. The response stays within 3 dB from 25 Hz to 2 kHz. Treble has a peak near 13 kHz.11Measurementdiyaudioheaven.wordpress.com/measurements/brands-s-se/hd550Read 23 October 2026Flatbed rig with good seal, no smoothing. Reviewer applies microphone and low-frequency correction. Measurements published July 11 2025. Actual fit can differ.

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

Not available

Not available

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

Not available

Not available

Deviation from targetiReviewer’s full-range error from its target curve. Do not substitute a regional bass or treble error.

Not available

Not available

Consistency between fittingsiReviewer’s standard deviation across repeated fittings. Test rig and fitting procedure belong in the source note.

Not available

Not available

Harmonic distortioniIndependently measured harmonic distortion, with test level and method in the source note.

Not available

Not available

Sound leakageiIndependently measured leakage at 30 cm. Playback level and method belong in the source note.

Not available

Not available

Measured noise isolationiIndependently measured attenuation. Positive values mean more noise reduction. ANC state, rig and frequency bands belong in the source note.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Clamping forceiMeasured by a reviewer, not claimed by the maker

Not available

Not available

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

Not available

238g(8.4 oz)11Measurementdiyaudioheaven.wordpress.com/measurements/brands-s-se/hd550Read 23 October 2026Measured specimen 238 g excluding cable. Maker claim stays 237 g.

Microphone

4 of 16 differ

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

Built-in1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Built-in microphones. No boom microphone in the box or spec list.

None7Reviewtechradar.com/gaming/sennheiser-hd-550-reviewRead 23 October 2026Base headphone has no microphone. Optional boom arm is excluded.

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.

41Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 20264 mic algorithm for calls. Clear Voice Technology uses two mics on each side.

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.

101Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Spec table: Total 10 mics. Creative Bloq says the ten microphones are used for ANC and calls.10Reviewcreativebloq.com/tech/headphones-earbuds/nothing-headphone-1-pro-review-better-headphones-but-should-you-upgradeRead 14 October 2026Ten microphones for ANC and calls. The review spec list says 10 microphones also used for calls.

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.

AI1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Clear Voice Technology trained on thirty million scenarios. Environmental Noise Cancellation for calls and voice notes.

Not available

Flip to mute

Not available

Not available

Mute button

Not available

Not available

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

Not available

Not available

Sidetone

Not available

Not available

Adjustable sidetone

Not available

Not available

Foam microphone windscreeniA foam cover for the voice microphone. An internal metal mesh pop filter does not count.

Not available

Not available

Connectivity

15 of 20 differ

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

Bluetooth, USB, Analog1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Bluetooth, 3.5 mm audio cable and USB-C lossless audio.

Analog8Reviewsoundguys.com/sennheiser-hd-550-review-134419Read 23 October 2026

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

3.5 mm TRS4Reviewsoundguys.com/nothing-headphone-1-pro-review-163291Read 14 October 2026The 3.5mm TRS cable is for analog sources.

3.5 mm TRS, 6.35 mm8Reviewsoundguys.com/sennheiser-hd-550-review-134419Read 23 October 2026

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

Not available

2.5 mm8Reviewsoundguys.com/sennheiser-hd-550-review-134419Read 23 October 2026Connectivity section explicitly identifies 2.5 mm locking headset end and 3.5 mm TRS source end.

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

Not available

1.8m9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

Headset USB plug or portiUSB plug or port on the headset or its included wired audio adapter. A charging-only USB port can appear here.

USB-C1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Type-C port for charging and USB audio.

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.

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Lossless USB-C audio up to 24-bit/192 kHz.

No12Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026Maker explicitly describes a direct analog signal path with no electronics. No powered noise cancellation, digital USB audio or stored electronic equalizer.

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.

Not available

Yes3Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026Direct analog signal path with no electronics and no charging or pairing.

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

None1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Bluetooth only. No dongle in the box.

Not available

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

Not available

Not available

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

10m1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Connection range 10 m.

Not available

Bluetooth

6.11Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Bluetooth version 6.1.

Not available

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

SBC, AAC, LDAC, LC31Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Spec table: AAC, SBC, LDAC (music playback), LC3 (broadcast audio only). LC3 is only used for Auracast broadcast audio.3Reviewtomsguide.com/audio/over-ear-headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Key specs list AAC, SBC, LC3 and LDAC.4Reviewsoundguys.com/nothing-headphone-1-pro-review-163291Read 14 October 2026SBC, AAC and LDAC for music, LC3 when using the Broadcast Audio feature.

Not available

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

Not available

Not available

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

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Share with Auracast. Broadcast audio feature in the spec table.

Not available

Bluetooth multipointiCan remain connected to multiple Bluetooth source devices at once. Mixing Bluetooth with a proprietary dongle is a separate field. A maker's dual connection to two Bluetooth devices at once counts.

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Dual connection: Yes. Connect two devices at the same time. SoundGuys says it is not true multipoint but connects to two devices and swaps audio streams.3Reviewtomsguide.com/audio/over-ear-headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Key specs: Multipoint connectivity Yes.4Reviewsoundguys.com/nothing-headphone-1-pro-review-163291Read 14 October 2026Does not support true Multipoint but can connect to two devices at a time and swap audio streams. The maker calls it dual connection. Tom's Guide and Irish Examiner say two devices connect at once.7Reviewirishexaminer.com/business/technology/arid-41921737.htmlRead 14 October 2026Supports connecting to two devices at once.

Not available

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

21Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Connect two devices at the same time.

Not available

Paired devices remembered

Not available

Not available

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

Not available

Not available

Fast pairing

Google Fast Pair, Microsoft Swift Pair1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Google Fast Pair and Microsoft Swift Pair. MFi for instant setup on Apple.

Not available

Base station

Not available

Not available

Latency

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

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Turn on low-latency mode in Nothing X. Spec table also lists Low lag mode via Bluetooth.

Not available

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

ANothing Headphone (1) Pro

Connection	Mode	Latency (ms)
Bluetooth	Game Mode on a Nothing phone	120
Analog	Flat EQ on	15

Source1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Footnote 3: latency can be reduced to as low as 120 ms when paired with Nothing phones with Game Mode on. Spec table: less than 15 ms latency via AUX with Flat EQ on. Published as less than 15 ms, stored as 15. The 120 ms is a minimum claim on Nothing phones only.

BSennheiser HD 550

Not available

Compatibility

2 of 3 differ

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

iOS, Android, Windows1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Android 8.0 and above, iOS 13 and above. Microsoft Swift Pair is listed, which is a Windows feature.

PS5, PS4, Xbox Series X|S, Xbox One, Nintendo Switch7Reviewtechradar.com/gaming/sennheiser-hd-550-reviewRead 23 October 2026Comparison table explicitly lists these platforms. PC stored as Windows, corroborated by wired PC review. Mobile lacks named OS and is omitted.

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.

ANothing Headphone (1) Pro

Platform	Connection
iOS	Bluetooth
Android	Bluetooth
Windows	Bluetooth

Source1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Bluetooth is documented for Android and iOS. Microsoft Swift Pair is a Windows pairing feature. Microphone support per platform is not stated.

BSennheiser HD 550

Not available

Official licence

Not available

Not available

Battery and charging

9 of 13 differ

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

1,060mAh1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Rechargeable lithium-ion, capacity 1060 mAh.11Reviewandroidguys.com/reviews/audio-reviews/nothing-headphone-1-proRead 14 October 2026Built-in 1060 mAh rechargeable lithium-ion battery.

Not available

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

Not available

Not available

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

Not available

Not available

Claimed battery lifeiMaker’s maximum playback time per stated connection, codec, ANC, spatial audio and lighting settings. Name the spatial processing mode and other conditions in the source note. Unknown settings stay omitted.

ANothing Headphone (1) Pro

Connection	ANC	Codec	Hours (h)
Bluetooth	No	AAC	68
Bluetooth	Yes	AAC	30
Bluetooth	No	LDAC	53
Bluetooth	Yes	LDAC	28

Source1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Footnote 2: up to 68 hours with ANC off, 50 percent volume, AAC and default settings at 25 C. Spec table: AAC 68 hours ANC off and 30 hours ANC on. LDAC 53 hours ANC off and 28 hours ANC on.10Reviewcreativebloq.com/tech/headphones-earbuds/nothing-headphone-1-pro-review-better-headphones-but-should-you-upgradeRead 14 October 2026Up to 30 hours with ANC on, 28 hours with LDAC and ANC, 68 hours with ANC off.

BSennheiser HD 550

Not available

Battery life (claimed, max)

68h=CalculatedFrom Claimed battery life

Not available

Battery life with ANC (claimed)

30h=CalculatedFrom Claimed battery life

Not available

Battery life without ANC (claimed)

68h=CalculatedFrom Claimed battery life

Not available

Charging port

USB-C1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Type-C wired charging.

Not available

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

120min1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Type-C wired charging to full takes 2 hours (120 minutes). Measured with a Nothing 45W adapter at 25 C.

Not available

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

5min1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Fast charging: a 5 minute charge.

Not available

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

4h1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 20265 min charge for 4 hours of playback with ANC off. With ANC on a 5 minute charge gives 2 hours. Conditions: AAC, 50 percent volume, Nothing 45W adapter at 25 C. Stored as the ANC off figure.

Not available

Use while charging

Not available

Not available

Charging dock or stand

Not available

Not available

Controls

5 of 6 differ

Controls

Buttons, Volume wheel1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Roller (volume wheel) for volume, play and pause. Paddle for track skip and calls, stored as buttons. Customisable button. Flat EQ switch. On/off switch.

Not available

Volume control

Wheel1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Roll to adjust volume.

None7Reviewtechradar.com/gaming/sennheiser-hd-550-reviewRead 23 October 2026No onboard controls or volume dial.

Game and chat mixiBalances separate game and chat audio streams. Mixing Bluetooth and dongle source volume alone does not count. Supported platforms belong in the source note.

Not available

Not available

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

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Footnote 5: custom controls are set with the phone or Nothing X. Nothing Headphone (1) Pro allows customisable controls.

Not available

Wear detection

Yes1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Auto-wear detection automatically pauses your music when you are done listening.3Reviewtomsguide.com/audio/over-ear-headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Key specs: Wear detection Yes.

Not available

Voice assistant

ChatGPT, Smart assistant1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026The button speaks to ChatGPT. The controls table lists Smart assistant.

Not available

Comfort and build

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Headband type

Padded1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026The headband has 10 percent wider and 12 percent thicker padding than Headphone (1).

Padded7Reviewtechradar.com/gaming/sennheiser-hd-550-reviewRead 23 October 2026

Headband material

Metal with padding5Reviewsoundguys.com/product/nothing-headphone-1-proRead 14 October 2026Spec table: Material Headband Metal with padding.

Synthetic leather3Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026

Frame material

Aluminium with titanium alloy arms1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Aluminium carved from a single block. New titanium alloy arms.7Reviewirishexaminer.com/business/technology/arid-41921737.htmlRead 14 October 2026The aluminium frame adds a sense of durability.

Plastic8Reviewsoundguys.com/sennheiser-hd-550-review-134419Read 23 October 2026Design describes plastic exterior and chassis.

Ear cup material

Aluminium with 9H Panda Glass window1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Machined aluminium with a glass window. Upgraded 9H Panda Glass.

Steel mesh covers3Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026Maker names steel covers. Entire cup construction is not claimed to be steel.

Ear pad material

Two-layer PU leather and nylon7Reviewirishexaminer.com/business/technology/arid-41921737.htmlRead 14 October 2026Two-layer PU leather and nylon cushions.

Synthetic velour9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

Replaceable ear pads

Yes7Reviewirishexaminer.com/business/technology/arid-41921737.htmlRead 14 October 2026The clip-in pads are easy to replace.

Yes9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

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.

Clip7Reviewirishexaminer.com/business/technology/arid-41921737.htmlRead 14 October 2026Clip-in pads. SoundGuys says you can pull the pads off and press them back into place.

Not available

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

Not available

Width42Height71mm(1.7 × 2.8 in)11Measurementdiyaudioheaven.wordpress.com/measurements/brands-s-se/hd550Read 23 October 2026Specifications explicitly names inner pad width 42 mm and height 71 mm. Front/rear depth differs, so a single depth is omitted. SoundGuys labels 43 x 75 mm as ear cup dimensions without saying usable opening.

Ear tips included

Not available

Not available

Dust and water rating

IP521Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026IP52 for dust and water resistance. Footnote 10 says it does not cover rain, splashes, immersion or excessive sweat.

Not available

User-replaceable parts

Ear cushions7Reviewirishexaminer.com/business/technology/arid-41921737.htmlRead 14 October 2026Ear pads described as easy to replace.

Ear pads, Audio cable9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 3 lists replacement cable and ear pads.

Software

3 of 3 differ

Companion app

Nothing X1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Nothing X.

Not available

App platforms

Android, iOS1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Nothing X is available on Google Play and the iOS App Store.

Not available

User firmware updates

Yes11Reviewandroidguys.com/reviews/audio-reviews/nothing-headphone-1-proRead 14 October 2026Firmware updates can be managed within the Nothing X app. The review names firmware V1.0.1.49.

Not available

Dimensions and weight

2 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.

327g(11.5 oz)1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Weight 327 g.2Retailer pageldlc.com/fiche/PB00757004.htmlRead 14 October 2026Poids des ecouteurs 327 g.9Reviewt3.com/tech/headphones/nothing-headphone-1-pro-reviewRead 14 October 2026Headphones weigh 327 g. The case weighs 384 g.

237g(8.4 oz)9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 3 explicitly excludes cable.

Headset dimensionsiBody size with headband upright and ear cups in their normal wearing position. Width is across the head, height is top to bottom, and depth is front to back. Folded or flat-swivel dimensions are not substituted.

Width174.4Height190.2Depth78mm(6.9 × 7.5 × 3.1 in)1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Height 190.2 mm, width 174.4 mm, depth 78.0 mm.

Not available

Certifications

1 of 3 differ

Hi-Res Audio

Hi-Res Audio, Hi-Res Audio Wireless1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Certified Hi-Res Audio for wireless and wired listening. LDAC and hi-res certified (wired and wireless).

Not available

Communication certifications

Not available

Not available

FCC ID

Not available

Not available

Other certifications

Not available

Not available

In the box

3 of 3 differ

In the box

Headphone (1) Pro, Hardshell case with strap loops, 3.5 mm audio cable, USB-C cable, Quick start guide1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Headphone (1) Pro, hardshell case with strap loops, 3.5 mm audio cable, USB-C cable and quick start guide.8Reviewslashgear.com/2271316/nothing-headphone-1-pro-reviewRead 14 October 2026USB-C cable and 3.5mm cable. The case has two tether attach points but no cord is included.

HD 550 headphones, 1.80 m cable with 3.5 mm jack plug, 3.5 to 6.35 mm screw-on jack adapter, Drawstring bag, Safety guide9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026Page 3 complete box contents.

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

ANothing Headphone (1) Pro

Type	Count
3.5 mm audio cable	1
USB-C cable	1

Source1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 20263.5 mm audio cable and USB-C cable. Lengths are not published.8Reviewslashgear.com/2271316/nothing-headphone-1-pro-reviewRead 14 October 2026Ships with a USB-C cable for charging and a 3.5mm cable for wired listening. There is no room for cables in the case.

BSennheiser HD 550

Type	Length (m)	Count
2.5 mm locking headset plug to 3.5 mm stereo plug	1.8	1

Source9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

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

Hard1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Hardshell case with protective TPU lining. Case weighs 383.5 g.

Soft9Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

Links

Not compared

Product page

us.nothing.tech/products/headphone-1-pro1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026

us.sennheiser-hearing.com/products/hd-5503Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026

Spec sheet

us.nothing.tech/products/headphone-1-pro1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026

gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdf1Maker spec sheet (PDF)gzhls.at/blob/ldb/2/9/c/b/88e1c5f7d6f57d4eddbdef407b2427546a53.pdfRead 23 October 2026

Manual

Not available

www.richersounds.com/content/product_files/HD550.pdf10Owner's manualrichersounds.com/content/product_files/HD550.pdfRead 23 October 2026Maker safety guide HD 505 / HD 550 with connection, headband adjustment and ear pad replacement illustrations. Retailer mirror because current maker Download article is empty.

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.

Not available

Not available

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.

1year1Maker product pageus.nothing.tech/products/headphone-1-proRead 14 October 2026Store text: Warranty included, 12 months of protection on phones, audio and wearables. This is a store-wide statement and the US region.

2years3Maker product pageus.sennheiser-hearing.com/products/hd-550Read 23 October 2026US maker page includes a 2-year manufacturer warranty.

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