Headsets and headphones / Compare

Marshall Milton A.N.C. vs Sony WH-CH520

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Product A: Marshall

Milton A.N.C.

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Product B: Sony

WH-CH520

75 of 161 known

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Only differences

AMarshall Milton A.N.C.

BSony WH-CH520

General

6 of 8 differ

Series

Not available

Not available

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

1008039, 1009112, 10091131Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026The page data lists Marshall order codes per colour: 1008039 Black, 1009112 Brown, 1009113 Cream. These are order codes, not hardware model numbers. The DoC names the model MILTON A.N.C. only. Variant rows carry the colour of each code.

YY29581Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Guide cover explicitly identifies the regulatory model.

GTIN / EAN

734005540737315Spec databasebilliger.de/pricelist/5756610471-marshall-milton-a-n-c-schwarzRead 15 October 2026Product properties for Milton A.N.C. Schwarz (black): EAN 7340055407373, listed since May 2026. A Thai retailer search result shows the same code for the black model. The Brown and Cream codes were not confirmed.

02724292520511Retailer pagebhphotovideo.com/c/product/1754496-REG/sony_whch520_b_wireless_on_ear_headphones_with.htmlRead 7 October 2026Exact Black WHCH520/B product UPC 027242925205. Other colours do not inherit this identifier.

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

19 May 20269Press articlesoundguys.com/marshall-milton-a-n-c-headphones-launch-with-adaptive-anc-and-ldac-157560Read 15 October 2026Launch article dated 19 May 2026: available starting today through Marshall's website, retail from 27 May.10Press articlepopsci.com/gear/marshall-milton-anc-on-ear-headphones-hendrix-anniversary-new-product-announcementRead 15 October 2026Published 19 May 2026: available to buy now at marshall.com.

21 February 20235Press releasesony.co.uk/presscentre/sony-announces-two-new-headphone-models-the-wh-ch720n-over-ear-and-wh-ch520-on-ear-wireless-headphonesRead 5 October 2026Dated manufacturer release.

Status

Available1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026The page has an Add to Bag button.

Not available

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

Sony WH-CH53021Reviewtomsguide.com/audio/headphones/sony-wh-1000xm4c-wh-ch730n-wh-ch530-announcedRead 23 October 2026Tom's Guide says the Sony WH-CH530 succeeds the WH-CH520.22Measurementsoundguys.com/sony-wh-ch530-review-162786Read 23 October 2026SoundGuys calls the WH-CH520 the previous model of the WH-CH530.

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

$229.991Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026The page data holds a US price of 229.99. Tom's Guide and the launch coverage list $229 or $229.99 at launch on 19 May 2026.

$59.999Press releasesony.mediaroom.com/2023-02-21-Sony-Electronics-announces-two-new-headphone-models-the-WH-CH720N-over-ear-and-WH-CH520-on-ear-wireless-headphones-featuring-Sonys-Digital-Sound-Equipment-EngineRead 7 October 2026Original Sony Electronics release dated February 21, 2023. Pricing and availability explicitly gives WH-CH520 MSRP $59.99. US consumer price excludes sales tax. WH-CH720N price $149.99 is separate.

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.

€19911Press articlethefestivals.uk/marshall-launches-milton-a-n-c-with-80-hour-batteryRead 15 October 2026Launch article: Price GBP 179.99 (also USD 229.99 / EUR 199). The Marshall store with euro prices lists 199 in the same way. Tax treatment is not stated.

€7010Maker product pagecommunity.sony.co.uk/t5/discover-sony/not-one-but-two-new-headphones-launched-this-month/ba-p/3904427Read 7 October 2026February 2023 Sony Community Team launch article. Pricing and availability gives WH-CH520 March 2023 suggested retail price 70 EUR and 60 GBP. Published European consumer price includes VAT. Direct HTTP returned 403. Full public indexed article read through web. Later discounts excluded.

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

Not available

US9Press releasesony.mediaroom.com/2023-02-21-Sony-Electronics-announces-two-new-headphone-models-the-WH-CH720N-over-ear-and-WH-CH520-on-ear-wireless-headphones-featuring-Sonys-Digital-Sound-Equipment-EngineRead 7 October 2026Original US release names Sony Electronics, Amazon and Best Buy sales. Other regions and colours do not inherit US part numbers.

ColoursiThe maker's own colour names

Black, Brown, Cream1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Colorways: Black, Brown, Cream. TechRadar and Tom's Guide say only Black was on sale at launch.

Pink, Yellow, Blue, Beige, White, Black, One Piece Black, One Piece White4Maker product pagesony.co.uk/headphones/products/wh-ch520/specRead 5 October 2026Public indexed maker specification cells. Direct fetch intermittently unavailable. Current UK spec color table including limited One Piece variants. No color-to-SKU mapping inferred.

Segment

Music1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Maker text: wireless headphones with adaptive active noise cancellation for music. Stored as music.

Music5Press releasesony.co.uk/presscentre/sony-announces-two-new-headphone-models-the-wh-ch720n-over-ear-and-wh-ch520-on-ear-wireless-headphonesRead 5 October 2026Introduction music listening on-ear headphones.

Design

2 of 7 differ

Form factor

On-ear1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Headphone Type: On-ear.

On-ear5Press releasesony.co.uk/presscentre/sony-announces-two-new-headphone-models-the-wh-ch720n-over-ear-and-wh-ch520-on-ear-wireless-headphonesRead 5 October 2026Introduction explicitly on-ear.

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

Closed6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Spec table: headphone style Closed back.

Closed3Maker product pagesony.jp/headphone/products/WH-CH520/spec.htmlRead 5 October 2026Headphone unit type: closed dynamic.

Wearing style

Headband6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Cushioned headband with adjustable height.

Headband1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Parts and controls, pages 9-10, labels headband and left/right units.

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

Inward1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Foldable design: Yes. Tom's Guide says the ear cups fold inwards and Loud and Wireless says they cannot fold flat.6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026The ear cups fold inwards and the headphones come with a cloth case.

Flat8Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Construction section: earcups pivot 90 degrees. Flat swivel does not mean inward hinge.

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

Not available

Yes6Maker product pagesony.co.uk/headphones/products/wh-ch520Read 5 October 2026Designed for all-day comfort: swivel earcups.

RGB lighting

Not available

Not available

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

Not available

Not available

Drivers and sound

8 of 20 differ

Driver type

Dynamic1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Audio specification: Driver Type Dynamic.

Dynamic3Maker product pagesony.jp/headphone/products/WH-CH520/spec.htmlRead 5 October 2026Headphone unit type: closed dynamic.

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

32mm1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Audio specification: Drivers 32 mm.

30mm3Maker product pagesony.jp/headphone/products/WH-CH520/spec.htmlRead 5 October 2026Driver unit 30 mm.

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

18Reviewexpertreviews.co.uk/technology/headphones-audio/marshall-milton-anc-reviewRead 15 October 2026Each earcup houses a 32mm dynamic driver.

111Retailer pagebhphotovideo.com/c/product/1754496-REG/sony_whch520_b_wireless_on_ear_headphones_with.htmlRead 7 October 2026Exact Headphone specification table states Number of Drivers 1 per Earpiece. Direct physical count, not inferred from 30 mm diameter.

Diaphragm material

Not available

Not available

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 HzMax20 kHz1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Frequency range: 20-20,000 Hz (SBC, AAC, LC3) and 20-40,000 Hz (LDAC at 96 kHz). The 20 to 20,000 Hz range is stored. The LDAC range is not stored because it depends on the codec and sample rate and no wired range is published. Power state and test standard are not stated.

Not available

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

Min20 HzMax20 kHz1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Specifications: A2DP transmission range at 44.1 kHz sampling. This is not acoustic driver response.

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.

32Ω1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Driver Impedance 32 ohm. The power state is not stated.

Not available

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.

99.3dB1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Driver Sensitivity 99.3 dB SPL (1mW @ 1kHz).

Not available

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

Per 1 mW1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Reference printed as 1 mW at 1 kHz.

Not available

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

Not available

Not available

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.

Not available

Not available

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

Not available

Not available

DAC

Not available

Not available

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

Not available

Not available

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

Not available

Yes14Press articlesoundguys.com/sony-bluetooth-headphone-control-mac-os-160060Read 7 October 2026July 2026 report lists WH-CH520 among v2 supported devices. It says manual EQ and presets are saved to the headset and need not be reapplied on another device. Applies to Bluetooth playback. CH520 compatibility is developer-reported. Reporter personally tested WH-1000XM5 only. No app platform or ANC features inherited.

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

57Reviewtechradar.com/audio/wireless-headphones/marshall-milton-anc-reviewRead 15 October 2026Features: a five-band equalizer alongside a handful of presets.8Reviewexpertreviews.co.uk/technology/headphones-audio/marshall-milton-anc-reviewRead 15 October 2026A rudimentary five-band graphic equaliser.

513Reviewwhathifi.com/reviews/sony-wh-ch520Read 7 October 2026Design and features paragraph explicitly states a five-band custom playback equalizer in Headphones Connect. CLEAR BASS control is separate. EQ preset names not stated.

EQ presets

Marshall, Bass Boost, Mid Boost, Treble Boost, Mid Reduction8Reviewexpertreviews.co.uk/technology/headphones-audio/marshall-milton-anc-reviewRead 15 October 2026Four preset EQs in addition to the default Marshall one: Bass Boost, Mid Boost, Treble Boost and Mid Reduction. Two custom slots.

Not available

Volume limit

Not available

Not available

Spatial audio

1 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.

Soundstage1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Soundstage spatial audio, Marshall's own stereo spatialization. Room size and amount are adjustable in the app according to Tom's Guide and Expert Reviews.

360 Reality Audio2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Page 84 app 360 Reality Audio setup for supported services. Not a bundled paid licence.

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

Not available

Not available

Head tracking

Not available

Not available

Noise cancelling

4 of 10 differ

Active noise cancelling

Yes1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Active Noise Cancellation: Yes. Adaptive ANC.

No8Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Presentation and connectivity sections explicitly say no active noise cancelling. Review firmware 1.0.1 and Headphones Connect 9.3.0.

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

Not available

Not available

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

Not available

Not available

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

Yes1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Adaptive ANC reacts to the environment in real time.

Not available

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

38Reviewexpertreviews.co.uk/technology/headphones-audio/marshall-milton-anc-reviewRead 15 October 2026The ANC has High, Medium and Low settings plus an Adaptive setting. Stored as 3 adjustable levels.

Not available

ANC attenuation (claimed)

Not available

Not available

Transparency mode

Yes1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Adaptive ANC and Transparency mode. The M-button toggles them.

No4Maker product pagesony.co.uk/headphones/products/wh-ch520/specRead 5 October 2026Public indexed maker specification cells. Direct fetch intermittently unavailable. General Features: Ambient Sound Mode No.

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

7 of 21 differ

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

The reviewer's sweep shows strong bass, a slightly recessed midrange and upper mids and treble that are a little too bright, close to sibilance.13Reviewloudnwireless.com/blog/marshall-milton-anc-review-better-than-expected-but-Read 15 October 2026Frequency sweep in the review: bass is deep, mids slightly recessed, upper mids and highs a bit too bright and close to sibilance. The reviewer's target and test rig are not stated.

With an ideal fit, bass and lower mids are emphasized. Other midrange harmonics are quieter. A broken seal reduces bass and makes mids and highs more prominent.17Measurementsoundguys.com/sony-wh-ch520-review-98695Read 7 October 2026Public lab frequency-response interpretation under ideal-fit conditions. Tested firmware 1.01, Headphones Connect 8.5, purchased WH-CH520/BZ over four days. Rig, EQ mode and codec not stated in article. Qualitative assessment only. No numeric deviation invented.

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

A recorded Google Meet call sounded scratchy and not true to life. A call outdoors on a windy day came through without wind buffeting.6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Call quality section: voice sounded scratchy and not true to life on a Google Meet call and a recording. Good wind reduction on an outdoor call.

Voices are clear but can sound thin. The microphone separates speech from moderate background noise. Loud environments can overpower the voice.18Measurementrtings.com/headphones/reviews/sony/wh-ch520-wirelessRead 7 October 2026Public Phone Calls verdict from tested Black WH-CH520, RTINGS methodology v1.5. Review updated April 9, 2024. Bluetooth connection. Codec, firmware, host and speech level not stated in public verdict. Membership-locked numeric results not used.

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.

AMarshall Milton A.N.C.

Not available

BSony WH-CH520

Connection	Latency (ms)
Bluetooth	224

Source7Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Connectivity section: 224 ms measured Bluetooth delay. Codec, host OS and equipment not stated, so platform/codec cells omitted. Firmware 1.0.1, app 9.3.0. Automatic video compensation does not apply to gaming.

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

Not available

224ms=CalculatedFrom Measured latency

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.

AMarshall Milton A.N.C.

Connection	ANC	Hours (h)
Bluetooth	No	81

Source6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Reviewer test: just over 50 hours with ANC on at 50 percent volume, and 81 hours with ANC off. Only the ANC-off figure is stored because the ANC-on result is not a number. Codec, and the volume of the ANC-off run, are not stated.

BSony WH-CH520

Connection	Hours (h)
Bluetooth	59
Bluetooth	55.42

Source7Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Runtime section: approximately 59 h at 60% maximum volume using AAC. Tested firmware 1.0.1 and app 9.3.0. ANC absent. Lighting and other app settings not stated. Higher than maker AAC 50 h under this measured volume condition. Published approximation retained, not an invented estimate.19Measurementsoundguys.com/sony-wh-ch520-review-98695Read 7 October 2026Second row is SoundGuys standardized continuous playback result 55 h 25 min, converted exactly to hours. Firmware 1.01, Headphones Connect 8.5, purchased WH-CH520/BZ. Codec, volume and EQ/DSEE settings not stated in article. First row 59 h belongs to existing Les Numeriques AAC test at 60% volume. Distinct methods and conditions. Results are not averaged.

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

81h=CalculatedFrom Measured battery life

59h=CalculatedFrom Measured battery life

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.

202g(7.1 oz)14Reviewheadphonecheck.comRead 15 October 2026The review gives a measured 202 g and lists Weight without cable 202 g. The maker states 200 g.

147g(5.2 oz)7Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Comfort section explicitly 147 g on the scale. Tested firmware 1.0.1, Headphones Connect 9.3.0. Bluetooth-only model with built-in mic and no detachable audio cable.

Microphone

4 of 16 differ

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

Built-in12Press articlewifihifi.comRead 15 October 2026Six microphones placed for both ANC and calls. No boom microphone.

Built-in1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Parts and controls, pages 9-10, identifies integrated voice/call microphone.

Microphone element

Not available

Not available

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

Not available

Not available

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

47Reviewtechradar.com/audio/wireless-headphones/marshall-milton-anc-reviewRead 15 October 2026Sound quality: four of the total six microphones are used for clear calls.

17Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Microphone section explicitly one unique microphone, voice pickup, not inferred from a diagram.

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.

61Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Microphones: 6. TechRadar says four of the six are 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.

Not available

DSP5Press releasesony.co.uk/presscentre/sony-announces-two-new-headphone-models-the-wh-ch720n-over-ear-and-wh-ch520-on-ear-wireless-headphonesRead 5 October 2026Call section explicitly noise suppression processing. AI not claimed.

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

Yes1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Guide pages 72 and 74 explicitly own voice heard through headset microphone during Bluetooth phone calls. Page 82 also states sidetone during Siri. Adjustment not published.

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

10 of 20 differ

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

Bluetooth, USB, Analog2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Bluetooth, USB-C digital audio and analogue 3.5 mm audio through the USB-C lead.

Bluetooth1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Bluetooth setup chapters for Android, iPhone, Windows and Mac. Analog playback added separately only where the guide proves it.

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

3.5 mm TRS2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Connecting a 3.5 mm audio device: analogue audio device with a 3.5 mm stereo jack through the included USB-C to 3.5 mm audio cable.

Not available

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

USB-C2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026The included audio lead connects to the USB-C port on the headphones. There is no 3.5 mm port on the headphones.

Not available

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

1.2m14Reviewheadphonecheck.comRead 15 October 2026The USB-C to 3.5 mm cable measures approximately 120 cm with a short coiled section. Technical specifications: Cable length 120 cm. The charging cable is shorter and its length is not stated.

0.2m2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Page 8: sole included cable is approximately 20 cm USB cable.

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-C2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Device layout item 4: USB-C charging and audio input.

USB-C1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Parts and controls, pages 9-10, USB Type-C charging port.

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.

Yes2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Connecting a USB-C digital audio device: USB-C to USB-C cable (not included). The USB-C port is a charging and audio input.

No1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Charging, pages 15-16: music playback and Bluetooth operations cannot be performed while connected to USB power. The USB port is for charging.

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.

No2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Connecting a 3.5 mm audio device step I: make sure the headphones are turned on. Expert Reviews says the headphones do not work passively when wired.8Reviewexpertreviews.co.uk/technology/headphones-audio/marshall-milton-anc-reviewRead 15 October 2026The headphones do not operate passively when wired. You have to switch them on.

No4Maker product pagesony.co.uk/headphones/products/wh-ch520/specRead 5 October 2026Public indexed maker specification cells. Direct fetch intermittently unavailable. General Features: Passive Operation No, Inputs No.

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

None3Maker product pagemarshall.com/us/en/support/headphones/support-for-milton-ancRead 15 October 2026Support page: Bluetooth wireless, or wired via USB-C or 3.5 mm. The box contents list no dongle or receiver.

None15Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 7 October 2026Complete package inventory gives headset and USB charging cable. All documented playback routes use Bluetooth. No dedicated proprietary wireless audio dongle. Generic host Bluetooth adapters do not count as dedicated receivers.

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 pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Bluetooth range 10 m / 30 ft.

10m1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Specifications: approximate 10 m line-of-sight. Obstacles and host conditions affect range.

Bluetooth

6.01Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Wireless connectivity: Bluetooth 6.0.

5.21Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Specifications chapter, communication system: Bluetooth 5.2.

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

SBC, AAC, LC3, LDAC1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Codecs: SBC, AAC (MPEG-2), LC3, LDAC.

SBC, AAC1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Specifications chapter: exact supported A2DP codecs, not Bluetooth version capabilities.

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

Yes2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Resetting: remove MILTON A.N.C. and MILTON A.N.C. [LE] from the Bluetooth list. The [LE] entry fits LE Audio. SoundGuys, PopSci and Wifi Hifi state Bluetooth 6.0 with LE Audio.9Press articlesoundguys.com/marshall-milton-a-n-c-headphones-launch-with-adaptive-anc-and-ldac-157560Read 15 October 2026Bluetooth 6.0 with LE Audio support and SBC, AAC, LC3 and LDAC.10Press articlepopsci.com/gear/marshall-milton-anc-on-ear-headphones-hendrix-anniversary-new-product-announcementRead 15 October 2026Bluetooth 6.0 with LE-Audio.

Not available

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

Yes7Reviewtechradar.com/audio/wireless-headphones/marshall-milton-anc-reviewRead 15 October 2026Features: Auracast connectivity in the Marshall Bluetooth app. Engadget and BGR also mention Auracast. HeadphoneCheck says it is a beta receiver only (Listen to Broadcast Beta) at the time of testing.

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 pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Bluetooth Multipoint Connectivity: Yes. Two devices at once per the manual.

Yes1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Connecting the headset to 2 devices simultaneously chapter. Streams switch, rather than mix.

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

22Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Pairing a new device: connected to two devices at a time.

21Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Connecting the headset to 2 devices simultaneously chapter, two Bluetooth source devices.

Paired devices remembered

82Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Pairing a new device: connected to two devices at a time and remembers up to 8 previously paired devices.

81Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Android pairing, page 25: up to eight paired devices. The oldest registration is replaced when another is paired.

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 Pair6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Thanks to Google Fast Pair, the Pixel recognised the headphones in pairing mode.

Google Fast Pair, Microsoft Swift Pair5Press releasesony.co.uk/presscentre/sony-announces-two-new-headphone-models-the-wh-ch720n-over-ear-and-wh-ch520-on-ear-wireless-headphonesRead 5 October 2026Both models Swift Pair and Fast Pair.

Base station

Not available

Not available

Latency

None of 2 known

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

Not available

Not available

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

Not available

Not available

Compatibility

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.

Android, iOS, macOS6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Tested with a Google Pixel 10 Pro XL and a MacBook Air M2 with multipoint. The Marshall Bluetooth app is on iOS and Android. USB-C audio works with any host that supports it, which is not tested here.

Android, iOS, Windows, macOS1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Individual Bluetooth setup chapters explicitly name Android, iPhone, Windows and Mac. No console path inferred.

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.

AMarshall Milton A.N.C.

Not available

BSony WH-CH520

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes
Windows	Bluetooth	Yes
macOS	Bluetooth	Yes

Source15Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 7 October 2026Exact manual Android and iPhone pairing chapters, call chapters pages 71-76, and computer video-call page 77 naming Windows 10, Windows 11 and Mac. Music uses A2DP. Calls use HFP or HSP with supported host and app selection. Some video apps may not expose the correct microphone profile. USB audio excluded.

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.

Not available

Not available

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

Yes1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Exchangeable Battery: Yes. User-replaceable spare parts. TechRadar says the battery sits under a panel on the left ear cup.7Reviewtechradar.com/audio/wireless-headphones/marshall-milton-anc-reviewRead 15 October 2026Under the left earcup you can unscrew a panel to replace the battery.

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.

AMarshall Milton A.N.C.

Connection	ANC	Hours (h)
Bluetooth	Yes	50
Bluetooth	No	80

Source1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Play time: 50 hours with Bluetooth and ANC, 80 hours with Bluetooth only. The headline text says 50+ hours with ANC. The codec, volume and spatial audio setting are not stated. Expert Reviews says Soundstage lowers these figures.

BSony WH-CH520

Connection	Hours (h)
Bluetooth	50

Source2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Page 17: AAC continuous music 50 h. SBC 45 h is left in notes because table has no codec column. EQ and DSEE shorten runtime. Call 40 h is not playback. ANC not applicable and omitted.

Battery life (claimed, max)

80h=CalculatedFrom Claimed battery life

50h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

50h=CalculatedFrom Claimed battery life

Not available

Battery life without ANC (claimed)

80h=CalculatedFrom Claimed battery life

Not available

Charging port

USB-C2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Charging the headphones: plug into a USB power source. Charging uses the USB-C port.

USB-C1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Charging, pages 15-16: supplied USB-A to USB-C cable.

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

120min1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Charging time: 2 hours to full recharge.

180min1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Charging, pages 15-16: approximate time explicitly defined as empty battery to full capacity. Hours converted to minutes.

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

15min1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Quick Charging: 15 minutes gives 9.5 hours of playtime.

3min2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Page 17: 3 minutes charging.

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

9.5h1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Quick Charging: 15 minutes gives 9.5 hours of playtime. Charger power, codec and ANC conditions are not stated.

1.5h2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Page 17: about 1.5 h music playback after 3 minutes. Codec unspecified.

Use while charging

Not available

No1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Charging, pages 15-16: connecting USB power turns the headset off and prevents music playback. Passive cable use is not claimed here.

Charging dock or stand

Not available

Not available

Controls

3 of 6 differ

Controls

Buttons1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Controls: Control knob and M-button. The knob is a multidirectional push control, stored as buttons.

Buttons2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Pages 9-10 parts list and playback chapter: three multifunction volume/playback/power buttons.

Volume control

Buttons1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Volume is set by pushing the control knob up or down (manual). Stored as buttons.

Buttons2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Pages 9-10 volume +/- buttons.

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 pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Customisable M-button with presets for ANC, Transparency mode, soundstage, EQ, Spotify Tap and voice assistant.

Not available

Wear detection

No7Reviewtechradar.com/audio/wireless-headphones/marshall-milton-anc-reviewRead 15 October 2026Pros and cons: No wear detection. Tom's Guide, Expert Reviews and Engadget say the same.

Not available

Voice assistant

Not available

Google app, Siri5Press releasesony.co.uk/presscentre/sony-announces-two-new-headphone-models-the-wh-ch720n-over-ear-and-wh-ch520-on-ear-wireless-headphonesRead 5 October 2026Footnote 2: press play/call button to activate Google or Siri, not wake-word activation.

Comfort and build

6 of 11 differ

Headband type

Padded6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Cushioned headband. Expert Reviews describes a thin lining under the headband.

Padded5Press releasesony.co.uk/presscentre/sony-announces-two-new-headphone-models-the-wh-ch720n-over-ear-and-wh-ch520-on-ear-wireless-headphonesRead 5 October 2026Comfort: adjustable headband with padding.

Headband material

Faux leather14Reviewheadphonecheck.comRead 15 October 2026The steplessly adjustable headband is made from faux leather.

Not available

Frame material

Powder-coated metal arms12Press articlewifihifi.comRead 15 October 2026Powder-coated metal arms, from the launch text.

Not available

Ear cup material

TPU with a leather-look embossed finish12Press articlewifihifi.comRead 15 October 2026Square-shaped TPU molded ear cups with a textured leather surface. The Japanese Marshall press release (PR Times) says TPU ear caps with a leather-look embossed finish.

Plastic8Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Construction section: plastic shells.

Ear pad material

Memory foam with faux leather6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Ear cushions are made of memory foam and TPU. BGR says soft faux leather and memory foam and Euronics lists imitation leather. Stored as memory foam with faux leather.

Not available

Replaceable ear pads

Yes1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026The page says the ear cushions are larger than on the Major V, and the store sells ear cushions as a spare part. The manual shows how to remove and refit them.

Yes8Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Photo caption explicitly says detachable and replaceable cushions. Attachment not inferred.

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.

Twist lock2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Cleaning: remove the ear cushions by turning them anticlockwise and refit by turning clockwise to lock. TechRadar calls it bayonet locking.7Reviewtechradar.com/audio/wireless-headphones/marshall-milton-anc-reviewRead 15 October 2026The earcups use bayonet locking and screw off.

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

Not available

Ear tips included

Not available

Not available

Dust and water rating

Not available

Not available

User-replaceable parts

Battery, Ear cushions1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026The page says Milton A.N.C. has user-replaceable spare parts. The Marshall store sells Battery and Ear Cushions as separate product variations.

Ear pads20Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 7 October 2026Construction photo caption explicitly states the ear cushions are detachable and replaceable. Existing earpad_replaceable true has the same evidence. Attachment mechanism and manufacturer spare-part availability not inferred.

Software

1 of 3 differ

Companion app

Marshall Bluetooth1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Compatible app: Marshall Bluetooth app.

Sony | Sound Connect1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026App chapter page 84. Headphones Connect was renamed Sound Connect in October 2024, as shown on the current guide landing page or maker product page.6Maker product pagesony.co.uk/headphones/products/wh-ch520Read 5 October 2026Current product EQ features name Sony Sound Connect.

App platforms

Android, iOS6Reviewtomsguide.com/audio/headphones/marshall-milton-anc-reviewRead 15 October 2026Marshall Bluetooth app, free on iOS and Android.

Android, iOS1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Installing the app chapter: Google Play and Apple App Store smartphone apps.

User firmware updates

Yes1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026OTA (over-the-air) software updates: Yes.

Yes1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026App capabilities page 84: update headset software.

Dimensions and weight

1 of 2 differ

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

200g(7.1 oz)1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Weight 200 g (7.05 oz). Euronics Estonia lists 231 g and MediaMarkt NL lists 0.674 kg, probably with packaging. The maker figure is stored.

147g(5.2 oz)1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Specifications: approximate published mass. Detachable cable inclusion is not stated in this guide.

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.

Not available

Not available

Certifications

1 of 3 differ

Hi-Res Audio

Hi-Res Audio, Hi-Res Audio Wireless4Maker spec sheet (PDF)assets.ctfassets.net/javen7msabdh/7LqTDh7XJGLQVU2hVArVh6/d91dda4868bd1ffaf838badcf5d057a5/Milton_ANC_-_Legal_and_safety_-_20260204_R1_5_CN.pdfRead 15 October 2026The Milton A.N.C. legal and safety leaflet describes the Hi-Res Audio logo and states that the Hi-Res Audio Wireless logo means playback with a codec certified by the Japan Audio Society. PopSci (from the launch release) calls the driver system Hi-Res Audio certified. The JAS licensee list was not checked.10Press articlepopsci.com/gear/marshall-milton-anc-on-ear-headphones-hendrix-anniversary-new-product-announcementRead 15 October 2026Custom-tuned Hi-Res Audio-certified driver system, 20 Hz to 40 kHz, sources up to 24-bit/96 kHz.

Not available

Communication certifications

Not available

Not available

FCC ID

Not available

AK8YY295816Regulatory filingfccid.io/AK8YY2958/Letter/Charge-Mode-Letter-6126147.pdfRead 7 October 2026Original Sony Charge Mode Letter, independently downloaded from public FCCID archive. Subject explicitly names FCC ID AK8YY2958. Maker manual and photographed retail-unit label identify model YY2958 as WH-CH520. Original fcc.report mirror returned 403 during verification. No battery capacity inferred.

Other certifications

Not available

Not available

In the box

3 of 3 differ

In the box

Milton A.N.C. headphones, USB-C to 3.5 mm audio cable, USB-C charging cable, Pouch, User manual and legal and safety information1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026Box contents: headphones, 3.5 mm audio cord, user manual and legal and safety information, USB-C charging cable, pouch. The manual calls the audio lead a USB-C to 3.5 mm cable.

Wireless Stereo Headset, USB Type-C cable (USB-A to USB-C)2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Page 8 package list, no headphone audio cable.

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

AMarshall Milton A.N.C.

Type	Length (m)	Count
USB-C to 3.5 mm audio cable	1.2	1
USB-C charging cable	Not available	1

Source8Reviewexpertreviews.co.uk/technology/headphones-audio/marshall-milton-anc-reviewRead 15 October 2026Short USB-C-to-USB-C charging cable and a coiled USB-C-to-3.5mm cable. Lengths are not published.14Reviewheadphonecheck.comRead 15 October 2026Delivery scope: USB-C to mini jack cable and USB-C to USB-C charging cable. Only the audio cable length is given.

BSony WH-CH520

Type	Length (m)	Count
USB-A to USB-C charging cable	0.2	1

Source2Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Page 8: one USB-A to USB-C cable, approximate 20 cm.

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

Soft8Reviewexpertreviews.co.uk/technology/headphones-audio/marshall-milton-anc-reviewRead 15 October 2026A fabric carrying pouch is supplied. TechRadar calls it a draw-string case.

None7Reviewlesnumeriques.com/casque-nomade/sony-wh-ch520-p73092/test.htmlRead 5 October 2026Technical characteristics/Construction: Housse de protection fournie=Non, explicitly no supplied protective bag.

Links

Not compared

Product page

www.marshall.com/us/en/product/milton-anc1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026

www.sony.co.uk/headphones/products/wh-ch5204Maker product pagesony.co.uk/headphones/products/wh-ch520/specRead 5 October 2026Public indexed maker specification cells. Direct fetch intermittently unavailable. Exact current model spec page links to product page.

Spec sheet

www.marshall.com/us/en/product/milton-anc1Maker product pagemarshall.com/us/en/product/milton-ancRead 15 October 2026

www.sony.jp/headphone/products/WH-CH520/spec.html12Maker product pagesony.jp/headphone/products/WH-CH520/spec.htmlRead 7 October 2026Exact Japanese maker WH-CH520 specification table read in Shift-JIS. Covers closed dynamic 30 mm driver, USB charging, runtime, Bluetooth profiles, codecs and A2DP transmission band. No sibling specifications inherited.

Manual

assets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdf2Owner's manualassets.ctfassets.net/javen7msabdh/l6VO4po2Qf2P6X69Ba81H/f6165e8f72d8f7d023b6a957a0cba223/Marshall_Milton_OLM_R1_2_1.pdfRead 15 October 2026Milton A.N.C. Full Online Manual, release R1.2. English section on pages 3 to 10.

helpguide.sony.net/mdr/2958/v1/en/print.pdf1Owner's manualhelpguide.sony.net/mdr/2958/v1/en/print.pdfRead 5 October 2026Official complete English help guide.

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.

2years5Maker product pagemarshall.com/us/en/policies/warrantyRead 15 October 2026United States limited warranty: two years for headphones and speakers bought on marshall.com or from an authorized US dealer. Batteries count as consumable parts.

1year11Retailer pagebhphotovideo.com/c/product/1754496-REG/sony_whch520_b_wireless_on_ear_headphones_with.htmlRead 7 October 2026Exact US WHCH520/B Items Included states Limited 1-Year Manufacturer Warranty. Scope is the original US manufacturer term stated by this dealer. Statutory rights and paid plans are separate. Current official Sony warranty PDF was inaccessible. No contrary exact term proved.

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