Wireless speakers / Compare

Marshall Middleton II vs Sony ULT FIELD 5

A

Product A: Marshall

Middleton II

51 of 96 known

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B

Product B: Sony

ULT FIELD 5

55 of 96 known

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Every value links to where we found it.

Only differences

AMarshall Middleton II

BSony ULT FIELD 5

General

4 of 8 differ

Series

Not available

ULT POWER SOUND1Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

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

1007428, 1007429, 10096441Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026US store page. Product ids in the page data: 1007428 Black and Brass, 1007429 Cream and 1009644 Black and Brass sold on the US store. The EU stores sell 1007428.2Maker product pagemarshall.com/de/de/product/middleton-iiRead 11 October 2026German store sells 1007428 Black and Brass and 1007429 Cream.

SRS-ULT50, YY7859E4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

GTIN / EAN

7340055404594, 7340055404617, 73400554203721Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026EAN values in the store page data: 1007428 is 7340055404594, 1007429 is 7340055404617, 1009644 is 7340055420372. Read from the German and US store pages.2Maker product pagemarshall.com/de/de/product/middleton-iiRead 11 October 2026EAN 7340055404594 for 1007428 and 7340055404617 for 1007429 in the store page data.

Not available

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

1 July 20255Press releasegroup.marshall.com/2025/07/01/marshall-reveals-their-latest-portable-powerhouse-middleton-iiRead 11 October 2026Press release dated 2025-07-01: Middleton II launches globally today on Marshall.com.

9 April 20251Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

Status

Available1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Offered for sale on the maker store in October 2026.

Available2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

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

Marshall Middleton10Reviewtomsguide.com/audio/bluetooth-speakers/marshall-middleton-ii-reviewRead 11 October 2026Tom's Guide calls the Middleton II the successor to the original Marshall Middleton.14Reviewengadget.com/audio/speakers/marshalls-new-middleton-ii-bluetooth-speaker-lasts-30-hours-between-charges-164354372.htmlRead 23 October 2026Engadget calls the Middleton II a direct replacement for the first-generation Middleton from 2023.

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.

$329.991Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026US store price $329.99, before US sales tax. TechRadar gives the same list price at launch in July 2025.9Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-middleton-ii-reviewRead 11 October 2026List price $329.99 / 259.99 GBP / AU$499, released July 2025.

$329.991Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026US suggested retail price at launch, excluding 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.

€2992Maker product pagemarshall.com/de/de/product/middleton-iiRead 11 October 2026German store price 299 EUR including VAT. Kopfhoerer.de reports the same 299 EUR launch price on 2025-07-01.8Press articlekopfhoerer.de/news/marshall-middleton-iiRead 11 October 2026News of 2025-07-01: available from 1 July 2025 for 299 EUR on marshall.com, retail from 15 July.

€2997Press releasesony.de/presscentre/sony-erweitert-die-ult-power-sound-serie-um-drei-neue-lautsprecher-und-zelebriert-den-launch-in-kooperation-mit-dem-superstar-post-malone-c07f7bRead 8 October 2026German launch UVP including VAT. FIELD 5 is explicitly 299 Euro. Regional euro release prices vary.

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

US1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026US store page and US launch price.

US, CA1Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

ColoursiThe maker's own colour names

Black and Brass, Cream1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Colourways: Black and Brass, Cream.

Black, Off White1Press releasesony.mediaroom.com/2025-04-09-Sony-Electronics-Introduces-Three-New-Speakers-in-the-ULT-POWER-SOUND-Range-Featuring-Global-Superstar-Post-MaloneRead 8 October 2026

Speaker typeiHome covers speakers made to stay in one place, including smart speakers. A speaker with Wi-Fi or a voice assistant can be of any type.

Portable1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Marshall lists it as a portable speaker.

Portable2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

Audio

10 of 18 differ

Audio channelsiSound channels reproduced by one speaker. Pairing two speakers for stereo is separate.

Stereo1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Stereo/mono: Stereo. Sound channels of one speaker, not a paired set.

Stereo6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026

Audio driversiPowered audio transducers in one speaker. Passive radiators are counted separately. Circular diameter and rectangular width and height have separate columns. Per-driver power must state continuous or RMS basis and battery or mains operation in the source note.

AMarshall Middleton II

Driver type	Count	Diameter (mm)
Woofer	2	76.2
Tweeter	2	15.24

Source1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Drivers: 2 x 3 inch woofer, 2 x 0.6 inch tweeter, 2 passive radiators. Sizes converted exactly to mm. The page lists amplifier ratings only, so no per-driver power is stored.

BSony ULT FIELD 5

Driver type	Count	Diameter (mm)
Woofer	1	Not available
Tweeter	2	46

Source4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. Woofer rectangular dimensions have no axis labels and are omitted. Tweeter diameters are approximate.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

21Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 20262 passive radiators.

25Reviewsoundguys.com/sony-ult-field-5-review-party-ready-but-with-room-to-improve-135558Read 8 October 2026

Rated audio poweriMaker-published total rated continuous audio output. Battery power is used for portable speakers when mains and battery ratings differ. Peak marketing power is separate.

Not available

Not available

Rated audio power on mainsiTotal rated continuous audio output with external power. Store a separate battery rating when the maker publishes both.

Not available

Not available

Audio output power (unspecified rating)iMaker- or reviewer-published audio output power whose continuous or peak rating basis is not stated. This is separate from rated continuous output and explicitly published peak output.

80W12Press articlewhathifi.com/speakers/wireless-speakers/marshalls-second-gen-middleton-speaker-aims-for-a-sound-thats-fit-for-royaltyRead 11 October 2026Launch article: 60 watts of Class D amplification for the twin 7.6 cm woofers and 20 watts for the pair of 15 mm tweeters. The maker lists four amplifiers, 2 x 30 W and 2 x 10 W. The 80 W total is the sum of these amplifier ratings, and a spec database also lists 80 W. No continuous, RMS or peak basis is stated, so it goes in the unspecified-rating field.13Spec databasefrontum.co.uk/portable-speakers/marshall-middleton-iiRead 11 October 2026Spec database lists audio output power 80 W. It also lists a 45 Hz lowest frequency, which conflicts with the maker's 50 Hz and is not used.

Not available

Peak audio poweriExplicitly published peak audio output. Never substitute for rated continuous output.

Not available

Not available

Frequency response lower limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

50Hz1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Frequency range 50Hz - 20kHz. Tolerance and mode are not stated. One database lists 45 Hz, which is not used.

Not available

Frequency response upper limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

20kHz1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Frequency range 50Hz - 20kHz. Tolerance and mode are not stated.

Not available

Signal-to-noise ratio (claimed)

Not available

Not available

Adjustable equalizeriUser-adjustable frequency bands. Selecting fixed sound presets alone does not qualify.

Yes1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Page: bass and treble controls on the top panel and in the Marshall Bluetooth app. The Abt spec sheet states an equaliser in the app.7Maker spec sheet (PDF)content.abt.com/documents/174754/marshall-portable-bluetooth-speaker-1007428-spec-sheet-1.pdfRead 11 October 2026Maker spec sheet hosted by a retailer: equaliser yes, bass and treble on units and equaliser in app.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Equalizer bandsiNumber of user-adjustable frequency bands. Do not count sound presets.

59Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-middleton-ii-reviewRead 11 October 2026The Marshall Bluetooth app has a five-band equalizer and a small set of presets. Tom's Guide and HeadphoneCheck also state five bands.10Reviewtomsguide.com/audio/bluetooth-speakers/marshall-middleton-ii-reviewRead 11 October 2026The app can update firmware, check battery life and adjust the 5-band EQ.

103Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

Automatic sound adjustmentiAdjusts audio to placement or playback conditions. Keep the named feature and conditions in the source note.

Not available

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Sound Field Optimization adapts to playback conditions and environment. Disabled with Stereo Pair or Party Connect.

Sound modesiNamed playback modes. Battery extension modes are also qualified in battery source notes.

Not available

ULT1, ULT2, Custom EQ, STAMINA4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026STAMINA disables sound effects including ULT. No claimed STAMINA runtime is stated.

Wireless stereo pairingiTwo compatible speakers can play separate left and right channels.

No9Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-middleton-ii-reviewRead 11 October 2026Review says it would have liked multi-speaker pairing, which is available on some other Marshall models. The page and manual list no pairing feature. Review also says there is no placement compensation.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Speaker link protocolsiNamed systems for linking compatible speakers, such as PartyBoost, Auracast or Party Connect. Linking support does not establish compatibility across all models.

Not available

Party Connect4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Party Connect supports compatible Sony speakers. Compatibility may require current firmware. It is distinct from Wireless Party Chain.

Max linked speakersiPublished maximum in a speaker group. A stereo pair is recorded separately. A figure such as 100+ is stored as 100.

Not available

1004Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Party Connect section. Up to 100 physical speakers in one compatible group, including the first speaker.

Max Bluetooth group speakersiPublished maximum speakers in one Bluetooth playback group, including the first speaker. Source notes name the compatible models or families, linking system and firmware requirements. Wi-Fi groups and concurrent Bluetooth source devices are excluded. A stereo pair alone does not establish the maximum when other Bluetooth linking systems are supported. A figure such as 100+ is stored as 100.

Not available

Not available

Connectivity

9 of 16 differ

Bluetooth audio playbackiPlays audio streamed over Bluetooth from a phone or other source. Bluetooth used only for setup or app control does not count.

Yes1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Bluetooth versioniVersion of the Bluetooth radio. Some Wi-Fi speakers use Bluetooth only for setup. See Bluetooth audio playback.

5.31Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Wireless connectivity: Bluetooth 5.3.

5.34Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026About the BLUETOOTH wireless technology. FIELD 3 states version 5.2, despite the SoundGuys review stating 5.3.

Bluetooth codecsiExplicitly supported receive codecs. Bluetooth version alone does not establish codecs.

SBC, AAC, LC31Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Codecs: SBC, AAC-mpeg 2 and LC3. Receive codecs.

SBC, AAC, LDAC4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Bluetooth profiles

Not available

A2DP, AVRCP, SPP3Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

Bluetooth LE AudioiExplicit LE Audio support. Bluetooth LE for app control alone does not qualify.

Yes5Press releasegroup.marshall.com/2025/07/01/marshall-reveals-their-latest-portable-powerhouse-middleton-iiRead 11 October 2026Product manager quote: with support for LE Audio, listeners can enjoy a more efficient and enhanced listening experience.8Press articlekopfhoerer.de/news/marshall-middleton-iiRead 11 October 2026Article states the Bluetooth speaker supports LE Audio.

Not available

AuracastiExplicit Auracast support. Sending, receiving and speaker-group roles belong in source notes.

Yes9Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-middleton-ii-reviewRead 11 October 2026Features: Auracast connectivity. The app can tune into a live broadcast via Auracast. Receiving role.11Reviewheadphonecheck.com/test/marshall-middleton-iiRead 11 October 2026Review says the speaker is Auracast-enabled and the app can search for Auracast broadcasts.

Not available

MultipointiConcurrent Bluetooth source connections. Pairing memory and speaker-to-speaker linking do not qualify.

Yes1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Bluetooth Multipoint Connectivity: Yes.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Multipoint source devicesiMaximum concurrently connected Bluetooth source devices, not remembered pairings.

23Owner's manualassets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdfRead 11 October 2026Pairing a new device: can be connected with 2 devices at a time and remembers up to 8 previously paired devices.

24Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Bluetooth range (claimed)iMaker-claimed Bluetooth range to the source device. Test conditions belong in the source note.

60m1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Bluetooth range 60 m, 200 ft.

30m4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026About 30 m. Obstacles and radio interference reduce this distance.

Wi-FiiBuilt-in Wi-Fi, for audio streaming, setup or control.

Not available

No6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026

Wi-Fi standardsiOne 802.11 name per item, such as 802.11ax. A Wi-Fi generation is written as its standard, so Wi-Fi 5 is 802.11ac and Wi-Fi 6 is 802.11ax. Older standards are listed only when a source names them.

Not available

Not available

Network audio protocolsiNamed systems that stream audio to the speaker over the home network. AirPlay is written as AirPlay 2. Chromecast built-in is written as Google Cast. Other names follow the maker, such as Spotify Connect.

Not available

Not available

USB audio inputiPlayback from a connected computer or phone through USB. Charging, service ports and USB flash-drive playback do not qualify.

Not available

No4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Parts and controls explicitly state that USB-C is not compatible with music playback.

USB drive playbackiPlayback of audio files on a connected USB storage device.

Not available

No4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026The only USB port is documented as incompatible with music playback.

USB audio file formats

Not available

Not available

PortsiPhysical speaker connectors. Record charging, audio input, power output and service roles separately. A shared microphone and guitar jack is one port. A combo jack that takes XLR and 6.35 mm plugs is 6.35 mm audio, and the role names XLR. Optical is a TOSLINK digital audio socket.

AMarshall Middleton II

Connector	Count	Role
3.5 mm audio	1	Audio input
USB-C	1	Charging input and power-bank output

Source1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Wired connectivity AUX 3.5mm. Power input USB-C. The USB-C power output role is the charging bank feature.

BSony ULT FIELD 5

Connector	Count	Role
USB-C	1	Charging input and power-bank output
3.5 mm audio	1	Stereo audio input

Source4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Controls and software

5 of 8 differ

SpeakerphoneiBuilt-in microphone and call support, through a connected phone or a voice assistant's calling. A microphone used only for voice commands does not count. Microphone inputs for karaoke are separate.

Yes1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Microphone system: Yes. Built-in microphone for hands-free calls.

No6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026Public speakerphone cell states No. Voice assistant verdict says there is no microphone for voice assistance. SoundGuys control table call row is not used.

Voice assistantsiVoice assistants explicitly usable through the speaker, such as Amazon Alexa, Google Assistant, Siri or Sonos Voice Control. State whether a connected phone is required.

Not available

Not available

Controls

Multidirectional control knob for play/pause, track skip, volume and calls, Power button, Bluetooth pairing button, Bass control, Treble control, 10-segment battery indicator3Owner's manualassets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdfRead 11 October 2026Device layout: power button, Bluetooth button, 10 segment battery indicator, control knob, microphone, bass and treble control. Knob: push for play/pause and calls, left/right to skip, up/down for volume.

Power, Bluetooth pairing, Play/pause, Volume, ULT sound mode, Speaker linking, Battery level and battery care, Lighting4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Companion app

Marshall Bluetooth1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Compatible apps: Marshall Bluetooth app.

Sony | Sound Connect4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

App platforms

iOS, Android3Owner's manualassets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdfRead 11 October 2026Page 9 offers the Marshall Bluetooth app and the closing page names Google Play and the App Store.10Reviewtomsguide.com/audio/bluetooth-speakers/marshall-middleton-ii-reviewRead 11 October 2026Spec table compatibility: iOS, Android, Bluetooth and 3.5 mm wired devices.

Android, iOS4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

User firmware updates

Yes3Owner's manualassets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdfRead 11 October 2026Troubleshooting: connect to the Marshall Bluetooth app and follow the in-app instructions to get the latest firmware.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Built-in lightingiDecorative or ambient lighting. Status, battery, connection and microphone indicator LEDs alone do not qualify.

Not available

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Lighting modes

Not available

Not available

Smart home

None of 3 known

Matter controlleriCan add and control Matter devices. Being a Matter device alone does not count.

Not available

Not available

Thread border routeriConnects Thread smart home devices to the home network.

Not available

Not available

Zigbee hubiA built-in Zigbee radio that controls Zigbee smart home devices.

Not available

Not available

Battery and charging

6 of 17 differ

Built-in battery

Yes1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Rechargeable Li-ion battery. The page says replaceable, but no user replacement procedure is published, so replaceable_battery is not stored.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Playback time (claimed)iMaximum maker-claimed music playback on one charge in normal playback mode. Battery extension or reduced-bass boost modes belong in battery_life_boost_h. Record volume and lighting conditions in the source note.

30h1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Play time 30+ hours, stored as 30. The legal notice states play time is calculated with a random selection of music at medium volume.

25h4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Charging the speaker, pp. 12-13. Approximate 25 h, Bluetooth, volume 18/50, ULT1/2 on, lights off, Battery Care off. With lights on at the same volume the claim is 10 h. Maximum volume with lights is 2.5 h.

Playback with battery extension (claimed)iTotal claimed runtime with the named battery extension mode enabled. Store the total, not only the extra hours. Keep sound and lighting restrictions in the source note.

Not available

Not available

Battery energyiPublished battery pack energy. Do not calculate from an assumed voltage.

Not available

Not available

Battery capacityiPublished pack capacity at the voltage in battery_voltage_v. Do not substitute power-bank output capacity. A figure written per cell, such as 5000mAh*2, is not a pack capacity unless the maker states the pack figure.

Not available

Not available

Nominal battery voltage

Not available

Not available

Battery chemistry

Lithium-ion1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Battery type: Rechargeable, replaceable, Li-ion battery.

Lithium-ion4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

User-replaceable batteryiBattery that the maker documents as replaceable by the user. Service replacement does not qualify.

Not available

Not available

Full charge timeiTime from discharged to full under the maker conditions. Adapter rating and simultaneous use belong in source notes.

3h1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 20263 hours to full recharge. Charger rating is not stated for this figure.

3.5h4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Charging the speaker. About 3.5 h from empty to full, speaker off, Battery Care off, using USB PD 9 V/3 A adapter.

Quick charge duration

20min1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Quick charging: 20 minutes gives 5 hours of playtime.

10min4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Playback after quick chargeiClaimed music playback after quick_charge_min of charging. Source conditions apply.

5h1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 202620 minutes gives 5 hours of playtime.

1.67h4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Charging the speaker. 100 minutes at volume 18/50, ULT1/2 on, lights off. Battery Care off, USB PD 9 V/3 A adapter.

Charging input ratingiPublished speaker input voltage and current. An adapter rating alone does not establish device input.

USB-C, 5 V / 9 V / 12 V / 20 V at 3 A1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Power input: USB-C 5V/9V/12V/20V-3A.

5 V DC, 3 A or 9 V DC, 3 A4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Max charging inputiPublished maximum charging input. USB audio power requirements and adapter output are separate.

31.6W4Maker spec sheet (PDF)assets.ctfassets.net/javen7msabdh/2ed2WkyZQKGwrdTnX9IQsq/a34297273e818f93e2e047fd6a03e43e/Middleton_II_-_Legal_and_safety_-_2025-12-08_R1.2_CN.pdfRead 11 October 2026Charger power must be between a minimum of 12.8 W required by the radio equipment and a maximum of 31.6 W to achieve the maximum charging speed. Stored as the maximum charging input.

Not available

USB Power Delivery charging

Yes4Maker spec sheet (PDF)assets.ctfassets.net/javen7msabdh/2ed2WkyZQKGwrdTnX9IQsq/a34297273e818f93e2e047fd6a03e43e/Middleton_II_-_Legal_and_safety_-_2025-12-08_R1.2_CN.pdfRead 11 October 2026This product supports USB PD fast charging. Multi-language legal notice, English text.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

Charges other devices

Yes1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Features: charging bank, use the speaker to charge your phone on the go. The manual requires more than 20% battery charge.

Yes4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. USB-C DC output 5 V, maximum 1.5 A. Output wattage is not explicitly published.

Max power-bank outputiPublished power delivered by the speaker to another device. Output voltage and current belong in the source note.

Not available

Not available

Wireless chargingiThe speaker battery can be charged wirelessly. Wireless power output to another device is separate.

Not available

Not available

Durability

3 of 5 differ

Dust and water ratingiExact published IP rating. Keep separate ratings, such as IP68 and IP69, as separate entries.

IP671Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026IP67: protected against dust and sand, tested to work after 30 minutes in 1 m of water.

IP66, IP673Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026Requires the cap to be securely closed. Accessories and exposed connectors are not water or dust resistant.

Floats

Not available

Yes6Reviewrtings.com/speaker/reviews/sony/ult-field-5Read 8 October 2026Public intro and outdoor verdict explicitly state it floats.

Drop resistanceiExplicit maker claim or defined drop test. Do not infer from rugged wording.

Not available

Not available

Drop test heightiMaker-published tested height. Surface and conditions belong in source notes.

Not available

Not available

Carry featuresiPublished handles, straps, carabiners or wheels.

Carry strap3Owner's manualassets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdfRead 11 October 2026Carrying strap hinge and an included carrying strap.

Detachable shoulder strap2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

Measured

None of 6 known

Playback time (measured)iReviewer-measured playback per charge. Volume, lighting, sound mode, firmware and connection belong in the source note.

Not available

Not available

Max sound pressure (measured)iReviewer-measured maximum SPL. Distance, test method and power source belong in source notes.

Not available

Not available

Low-frequency extension (measured)iReviewer-measured low-frequency limit. Threshold and test method belong in source notes.

Not available

Not available

High-frequency extension (measured)iReviewer-measured high-frequency limit. Threshold and test method belong in source notes.

Not available

Not available

Audio latency (measured)iReviewer-measured source-to-speaker latency. Source device, app, codec, firmware and connection belong in source notes. App compensation may affect results.

Not available

Not available

Full charge time (measured)iReviewer-measured time from empty to full. Power adapter and method belong in the source note.

Not available

Not available

Dimensions and weight

3 of 3 differ

DimensionsiSpeaker body width, height and depth on explicitly identified axes. Unlabeled tuples do not establish axis meanings. Handle, strap and orientation conditions belong in the source note.

Width230Height110Depth98mm(9.1 × 4.3 × 3.9 in)1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Physical unit: width 230 mm, height 110 mm, depth 98 mm. The page spec box prints L230*W98*H110 mm and also labels width, height and depth separately with the same values.

Width320Height144Depth125mm(12.6 × 5.7 × 4.9 in)4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. Approximate W × H × D, including projecting parts and controls.

WeightiSpeaker mass including its battery. Excludes packaging, charger and removable carry accessories unless the source states otherwise.

1,800g(4 lb)1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Weight 1.8 kg / 3.9 lbs.

3,300g(7.3 lb)4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026Specifications. Approximate mass including battery.

Body materials

Silicone sleeve, Tolex covering3Owner's manualassets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdfRead 11 October 2026Cleaning section: the silicone sleeve can be removed and cleaned separately.11Reviewheadphonecheck.com/test/marshall-middleton-iiRead 11 October 2026Review describes Marshall's signature snakeskin-style Tolex covering. TechRadar calls it faux leather.

Fabric grille, Plastic body5Reviewsoundguys.com/sony-ult-field-5-review-party-ready-but-with-room-to-improve-135558Read 8 October 2026

Certifications

None of 1 known

FCC IDs

Not available

Not available

Other certifications

Not available

Not available

In the box

1 of 1 differ

In the box

Middleton II speaker, Carry strap, USB-C charging cable, Quick start guide, Legal and safety information1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Box contents: speaker, strap, USB-C charging cable, quick start guide, legal and safety information.

Speaker, USB-C to USB-C cable, Shoulder strap3Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

Links

Not compared

Product page

www.marshall.com/us/en/product/middleton-ii1Maker product pagemarshall.com/us/en/product/middleton-iiRead 11 October 2026Maker's product page for Middleton II.

electronics.sony.com/audio/speakers/all-speakers/p/srsult50-b2Maker product pageelectronics.sony.com/audio/speakers/all-speakers/p/srsult50-bRead 8 October 2026

Spec sheet

Not available

www.sony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specifications3Maker product pagesony.co.uk/electronics/support/speakers-wireless-speakers/srs-ult50/specificationsRead 8 October 2026

Manual

assets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdf3Owner's manualassets.ctfassets.net/javen7msabdh/52ltpkI3c7wiY1XvINbpPD/bf15b800425c3408d16fc26bed07601d/Marshall_Middlton_II_OLM_R1_5_Combined.pdfRead 11 October 2026Full online manual R1.5, English on pages 3 to 12. Combined PDF with 40 languages.

helpguide.sony.net/speaker/7859/v1/en/print.pdf4Owner's manualhelpguide.sony.net/speaker/7859/v1/en/print.pdfRead 8 October 2026

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

None of 1 known

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.

Not available

Not available

Both are also in the API. Back to all wireless speakers.