Wireless speakers / Compare

JBL Xtreme 4 vs Marshall Middleton

A

Product A: JBL

Xtreme 4

58 of 96 known

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B

Product B: Marshall

Middleton

51 of 96 known

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Every value links to where we found it.

Only differences

AJBL Xtreme 4

BMarshall Middleton

General

5 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.

JBLXTREME4BLKAM1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

1006034, 10062621Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Marshall US product IDs in the page data. 1006034 is Black and Brass and 1006262 is Cream.5Reviewtrustedreviews.com/reviews/marshall-middletonRead 10 October 2026Full specs table lists model number 1006034, the Black and Brass colour, and ASIN B0BTHL673V.

GTIN / EAN

Not available

Not available

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

8 January 20247Press releasenews.jbl.com/en-CEU/233279-music-is-better-connected-as-jbl-launches-its-first-auracasttm-enabled-portable-speakersRead 8 October 2026

31 January 20234Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-middleton-reviewRead 10 October 2026Review states the speaker was announced in January 2023.6Press releasegroup.marshall.com/2023/05/26/zound-introduces-the-latest-marshall-portable-speaker-the-middletonRead 10 October 2026Maker news post says the Middleton is available for purchase globally on marshallheadphones.com from January 31st. Tom's Guide says it was unveiled on 31 January 2023.7Press articletomsguide.com/news/marshall-brings-legendary-sound-in-a-new-rugged-take-anywhere-bluetooth-portableRead 10 October 2026News article says the Middleton was unveiled on 31 January 2023 and is on sale now.

Status

Available1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

Available1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026The US store lists the Cream colour as orderable on the accessed date. Black and Brass is listed as not orderable.

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

JBL Xtreme 310Reviewsoundguys.com/jbl-xtreme-4-100540Read 23 October 2026SoundGuys calls the Xtreme 3 the predecessor of the new JBL Xtreme 4.

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.

JBL Xtreme 511Reviewtechradar.com/audio/wireless-bluetooth-speakers/jbl-xtreme-5-reviewRead 23 October 2026TechRadar's review says the Xtreme 5 launched about two years after its predecessor, the JBL Xtreme 4.

Marshall Middleton II11Reviewtomsguide.com/audio/bluetooth-speakers/marshall-middleton-ii-reviewRead 23 October 2026Tom's Guide calls the Middleton II the successor to the original Marshall Middleton.12Reviewengadget.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.

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

Not available

$299.994Reviewtechradar.com/audio/wireless-bluetooth-speakers/marshall-middleton-reviewRead 10 October 2026Review states an official price of $299.99, GBP 269.99 and AU$499. US market.

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.

Not available

€2995Reviewtrustedreviews.com/reviews/marshall-middletonRead 10 October 2026Full specs table lists EU RRP EUR 299.8Press articlepocket-lint.com/marshall-launches-middleton-biggest-portable-speakerRead 10 October 2026Launch article published 31 January 2023 gives GBP 269, EUR 299 and USD 299. Trusted Reviews lists EU RRP EUR 299 and ComputerBase lists a list price of 299 euros. Price includes 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

US1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026US store page priced in USD.

ColoursiThe maker's own colour names

Black, Blue, Black Camo1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

Black and Brass, Cream1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Maker colorway names Black and Brass and Cream.

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 pagejbl.com/XTREME-4.htmlRead 8 October 2026

Portable1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Maker describes a portable speaker.

Audio

9 of 18 differ

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

Stereo5Measurementrtings.com/speaker/reviews/jbl/xtreme-4Read 8 October 2026

Stereo1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Audio specification states stereo and describes True Stereophonic 360 degree sound.

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.

AJBL Xtreme 4

Driver type	Count	Diameter (mm)	Rated power per driver (W)
Woofer	2	70	20
Tweeter	2	20	15

Source3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026Quick start guide TECH SPEC. Per-driver powers are battery mode. External-power mode is 30 W per woofer and 20 W per tweeter. All per-driver output figures are RMS ratings.

BMarshall Middleton

Driver type	Count	Diameter (mm)
Woofer	2	76.2
Tweeter	2	Not available

Source1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Audio specification lists two 3 in 15 W woofers and two tweeters of 10 W. The woofer size is converted exactly to mm. The tweeter size is published as 3/5 in on the maker page and as 3.5 in by Trusted Reviews, so no tweeter diameter is stored. The watt figures have no stated continuous, RMS or peak basis, so no per-driver power is stored. Amplifiers are listed as two 20 W Class D for the woofers and two 10 W Class D for the tweeters, also without a rating basis.5Reviewtrustedreviews.com/reviews/marshall-middletonRead 10 October 2026Full specs table lists two 3 in woofers, two tweeters and two passive radiators. The 3.5 in tweeter size conflicts with the maker's 3/5 in, so it is not stored.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

21Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

21Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Audio specification lists two passive radiators.5Reviewtrustedreviews.com/reviews/marshall-middletonRead 10 October 2026Full specs table lists two passive radiators, matching the maker.

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.

70W4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026Explicit 70 W battery total in What you need to know. Matches maker battery component ratings.

Not available

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

100W4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026Explicit 100 W external-power total. Requires the AC-to-USB-C power source.

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.

Not available

50W5Reviewtrustedreviews.com/reviews/marshall-middletonRead 10 October 2026Full specs table lists audio power output 50 W. This equals the maker driver ratings of 2 x 15 W woofers plus 2 x 10 W tweeters. The maker amplifier ratings add up to 60 W (2 x 20 W and 2 x 10 W). No continuous or peak basis is stated, so only the unspecified-rating field is filled.9Reviewcomputerbase.de/2023-02/marshall-middleton-testRead 10 October 2026Text sums 2 x 15 W woofers and 2 x 10 W tweeters to 50 W. The spec table prints 60 W, which matches the amplifier ratings. Stored 50 W as the driver total.

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.

Not available

50Hz1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Frequency range 50 Hz to 20,000 Hz. Tolerance is not stated.

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.

20kHz3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026TECH SPEC publishes this endpoint. No amplitude tolerance or operating-mode condition is stated.

20kHz1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Frequency range 50 Hz to 20,000 Hz. Tolerance is not stated.

Signal-to-noise ratio (claimed)

Not available

Not available

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

Yes1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

Yes1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Page lists adjustable bass and treble controls on the speaker and in the app.

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

54Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026Five-band custom EQ in JBL Portable v6.2.21 with speaker firmware .0.5.5.0.

21Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Bass and treble controls are two adjustable bands. The Trusted Reviews article states a range of minus 5 to plus 5 for each.

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

Yes1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026AI Sound Boost analyzes playback and predicts driver movement and power response. It limits distortion at high volume.

Yes1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Description says built-in Dynamic Loudness adjusts the tonal balance of the sound to ensure the music sounds brilliant at every volume. This follows listening volume and is not room or placement calibration.6Press releasegroup.marshall.com/2023/05/26/zound-introduces-the-latest-marshall-portable-speaker-the-middletonRead 10 October 2026Built-in Dynamic Loudness adjusts the tonal balance of the sound for the listening volume.

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

Playtime Boost2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwd4772be5/pdfs/JBL_Xtreme_4_Specsheet_EN_(with_Adaptor).pdfRead 8 October 2026

Not available

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

Yes1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

No9Reviewcomputerbase.de/2023-02/marshall-middleton-testRead 10 October 2026Test says Marshall provides no way to couple two speakers into a stereo pair. Only Stack Mode is offered.

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

Auracast, PartyBoost1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026Auracast links compatible JBL speakers. PartyBoost compatibility uses the JBL Portable app. Stereo pairing requires two Xtreme 4 speakers.

Stack Mode2Owner's manualassets.ctfassets.net/javen7msabdh/7G6groYkOBIzgHbbBAnqDR/ea07dbe566533429e0f138e035f923d4/Middleton_Full_User_Manual_EN.pdfRead 10 October 2026Stack Mode connects two or more Middleton speakers in a session. No maximum is published.

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

Not available

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

7 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.

Yes4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026

Yes5Reviewtrustedreviews.com/reviews/marshall-middletonRead 10 October 2026

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

5.33Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

5.11Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Wireless connectivity Bluetooth 5.1.

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

SBC4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026

SBC5Reviewtrustedreviews.com/reviews/marshall-middletonRead 10 October 2026Review states only the SBC codec is available for streaming audio, with Bluetooth 5.1.

Bluetooth profiles

A2DP, AVRCP 1.63Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026QSG says A2DP 1.4. Datasheet says A2DP 1.3. Only the undisputed A2DP profile name is stored. Both say AVRCP 1.6.

Not available

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

Not available

Not available

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

Yes1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

Not available

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

Yes4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026

Yes9Reviewcomputerbase.de/2023-02/marshall-middleton-testRead 10 October 2026Test says the multi-host function pairs the speaker with two different sources at the same time and both can play.10Reviewexpertreviews.co.uk/bluetooth-speakers/1418398/marshall-middleton-reviewRead 10 October 2026Review says the speaker connected to two devices without issue but will not switch sources automatically. Audio on one device must be paused before the other plays.

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

24Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026

29Reviewcomputerbase.de/2023-02/marshall-middleton-testRead 10 October 2026Test says two sources at the same time.

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

Not available

10m1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Bluetooth range 10 m / 30 ft.

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

No5Measurementrtings.com/speaker/reviews/jbl/xtreme-4Read 8 October 2026

No1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists Wi-Fi as No.

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.

No4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026

Not available

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

No4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026FAQ explicitly says the speaker cannot play music from USB.

Not available

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.

AJBL Xtreme 4

Connector	Count	Role
USB-C	1	Charging input and power-bank output

Source3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

BMarshall Middleton

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

Source1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists a 3.5 mm input. The manual describes the USB-C connector as power input and output.2Owner's manualassets.ctfassets.net/javen7msabdh/7G6groYkOBIzgHbbBAnqDR/ea07dbe566533429e0f138e035f923d4/Middleton_Full_User_Manual_EN.pdfRead 10 October 2026Manual lists AUX 3.5 mm audio input and a USB-C power input and output used to charge the speaker or charge another device as a power bank.

Controls and software

3 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.

No5Measurementrtings.com/speaker/reviews/jbl/xtreme-4Read 8 October 2026

No1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists microphone system as No.

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

Power, Bluetooth pairing, Auracast linking, Volume up, Volume down, Play/pause, Next track, Previous track3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026PLAY diagram shows one press for play/pause, two for next track and three for previous track.

Multidirectional control knob for play/pause, track skip, volume and power, Bluetooth pairing button and Stack Mode, Battery status button, Bass control, Treble control1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Page lists a multidirectional control knob, a Bluetooth pairing button that also starts Stack Mode, a battery and volume indicator and treble and bass controls. The manual adds a battery status button.2Owner's manualassets.ctfassets.net/javen7msabdh/7G6groYkOBIzgHbbBAnqDR/ea07dbe566533429e0f138e035f923d4/Middleton_Full_User_Manual_EN.pdfRead 10 October 2026Manual describes the battery status button, Bluetooth button, battery indicator, bass and treble controls and the control knob.

Companion app

JBL Portable1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

Marshall Bluetooth1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists the Marshall Bluetooth App.

App platforms

Not available

iOS, Android9Reviewcomputerbase.de/2023-02/marshall-middleton-testRead 10 October 2026Test says the Marshall app is available for Android and iOS.

User firmware updates

Yes3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026APP section documents software upgrades through JBL Portable.

Yes1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification states over-the-air software updates are supported.

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

Not available

Not available

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

12 of 17 differ

Built-in battery

Yes3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

Yes1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists a built-in rechargeable Li-ion battery.

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.

24h3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026Up to 24 hours. Depends on volume and audio content.

20h1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification states 20+ hours of play time. Stored as 20. Test volume is not stated.

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.

30h2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwd4772be5/pdfs/JBL_Xtreme_4_Specsheet_EN_(with_Adaptor).pdfRead 8 October 2026Page 2 claims 24 hours plus 6 additional hours with Playtime Boost. Total 30 hours in that mode. SoundGuys reports this mode reduces bass.4Reviewsoundguys.com/jbl-xtreme-4-review-117134Read 8 October 2026Playtime Boost extends runtime by reducing bass. The normal maker runtime and extension-mode total are separate. The maker source supplies the total-hour claim.

Not available

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

68Wh3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

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.

9,444mAh3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

Not available

Nominal battery voltage

7.2V3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

Not available

Battery chemistry

Lithium-ion polymer3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

Lithium-ion1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists a built-in rechargeable Li-ion battery.

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

Yes1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

No1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Page FAQ says a repair centre replaces the battery. It is not documented as user-replaceable.

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

3.5h3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 20263.5 hours with 20 V / 3 A speaker input.

4.5h1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification states a charging time of 4.5 hours. Adapter is not stated.

Quick charge duration

10min3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

20min1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification states 20 minutes of charge gives 2 hours of playtime.

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

2h3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

2h1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification states 20 minutes of charge gives 2 hours of playtime.

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, 15 V or 20 V at 3 A3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

Not available

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

Not available

Not available

USB Power Delivery charging

Yes3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026PD adapter and USB-C input are documented. The later no-adapter QSG explicitly calls the charging protocol USB PD.9Owner's manualuk.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwd6b1df7e/pdfs/LS_JBL_Xtreme_4_QSG_Global_No_Adaptor_CR_V5.pdfRead 8 October 2026CHARGING panel explicitly identifies USB PD fast charging. Adapter sold separately.

Not available

Charges other devices

Yes1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

Yes1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Page states the speaker has a power bank feature to charge a phone. Output power is not published.2Owner's manualassets.ctfassets.net/javen7msabdh/7G6groYkOBIzgHbbBAnqDR/ea07dbe566533429e0f138e035f923d4/Middleton_Full_User_Manual_EN.pdfRead 10 October 2026Manual says to plug in a USB-C device to use the speaker as a power bank.

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

Not available

5W9Reviewcomputerbase.de/2023-02/marshall-middleton-testRead 10 October 2026Test says the USB-C port can charge external devices with 5 V and 1 A, which is 5 W.

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

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Durability

1 of 5 differ

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

IP671Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

IP671Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Page states IP67. Dust protected and tested to work for up to 30 minutes under 1 m of water.

Floats

Not available

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

Not available

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

Not available

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Carry featuresiPublished handles, straps, carabiners or wheels.

Detachable shoulder strap with bottle opener1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

Detachable carry strap1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Page and box list describe a detachable carry strap.

Measured

1 of 6 differ

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

27.2h5Measurementrtings.com/speaker/reviews/jbl/xtreme-4Read 8 October 2026Public Xtreme 5 comparison states 27.2 hours for Xtreme 4. Review uses test bench 0.8. RTINGS battery method loops audio at 80 dB SPL measured 1 m away. Speaker-specific firmware and Boost state are not publicly stated.6Measurementrtings.com/speaker/tests/active-features/batteryRead 8 October 2026Method: full charge, latest available firmware, repeated audio track at 80 dB SPL from 1 m until shutdown.

12h10Reviewexpertreviews.co.uk/bluetooth-speakers/1418398/marshall-middleton-reviewRead 10 October 2026Reviewer ran out of charge around the 12-hour mark at fairly loud volumes. Approximate figure. Firmware, source and exact volume are not stated.

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

Not available

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

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

Not available

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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

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

Not available

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Dimensions and weight

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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.

Width297Height149Depth141mm(11.7 × 5.9 × 5.6 in)3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026TECH SPEC explicitly names width x height x depth.

Width230Height109Depth95mm(9.1 × 4.3 × 3.7 in)1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists width 230 mm, height 109 mm and depth 95 mm.

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

2,100g(4.6 lb)3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdfRead 8 October 2026

1,800g(4 lb)1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Specification lists 1.8 kg / 4.0 lb.

Body materials

Post-consumer recycled plastic, Recycled fabric, Rubber bumpers1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026Recycled plastic and fabric stated in Features. Rubber bumpers stated in Description.

Post-consumer recycled plastic, Silicone sleeve, Metal grille2Owner's manualassets.ctfassets.net/javen7msabdh/7G6groYkOBIzgHbbBAnqDR/ea07dbe566533429e0f138e035f923d4/Middleton_Full_User_Manual_EN.pdfRead 10 October 2026Cleaning section says the silicone sleeve and strap can be removed.6Press releasegroup.marshall.com/2023/05/26/zound-introduces-the-latest-marshall-portable-speaker-the-middletonRead 10 October 2026Maker says the speaker is built of 55% post-consumer recycled plastic and is PVC-free.9Reviewcomputerbase.de/2023-02/marshall-middleton-testRead 10 October 2026Test describes a metal grille on the front and a rubber ring on the base.

Certifications

None of 1 known

FCC IDs

Not available

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Other certifications

Not available

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In the box

1 of 1 differ

In the box

JBL Xtreme 4, Shoulder strap, Quick start guide, Warranty card and safety sheet1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026Current US product-page box list. An adapter appears in earlier regional documents and is not listed in this current box list.

Middleton speaker, Detachable carry strap, User manual and legal and safety information, USB-A to USB-C charging cable1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026Maker box contents list.

Links

Not compared

Product page

www.jbl.com/XTREME-4.html1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

www.marshall.com/us/en/product/middleton1Maker product pagemarshall.com/us/en/product/middletonRead 10 October 2026

Spec sheet

www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwd4772be5/pdfs/JBL_Xtreme_4_Specsheet_EN_(with_Adaptor).pdf1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

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Manual

www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwb9d8d5a6/pdfs/PA_JBL_Xtreme%204_QSG_Global_SOP_V11_online.pdf1Maker product pagejbl.com/XTREME-4.htmlRead 8 October 2026

assets.ctfassets.net/javen7msabdh/7G6groYkOBIzgHbbBAnqDR/ea07dbe566533429e0f138e035f923d4/Middleton_Full_User_Manual_EN.pdf2Owner's manualassets.ctfassets.net/javen7msabdh/7G6groYkOBIzgHbbBAnqDR/ea07dbe566533429e0f138e035f923d4/Middleton_Full_User_Manual_EN.pdfRead 10 October 2026Maker full online manual, 9 pages, English.

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

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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.

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