Wireless speakers / Compare

Marshall Emberton II vs Ultimate Ears BOOM 3

A

Product A: Marshall

Emberton II

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B

Product B: Ultimate Ears

BOOM 3

54 of 96 known

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Every value links to where we found it.

Only differences

AMarshall Emberton II

BUltimate Ears BOOM 3

General

5 of 8 differ

Series

Emberton1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026

BOOM1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026

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

1006234, 1006788, 1006237, 10067871Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026US Black and Steel page: pid and Product JSON-LD SKU 1006788. The US store sells it at 159.99 USD with an Add to Bag button (read 2026-10-23). Other colour SKUs are in the sources below.2Maker product pagemarshall.com/gb/en/product/emberton-iiRead 23 October 2026UK Black and Brass page: SKU 1006234.3Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026US Cream page: SKU 1006237.4Maker product pagemarshall.com/de/de/product/emberton-iiRead 23 October 2026German page Cream: SKU 1006787, which is the EU Cream SKU.

984-001348, 984-001350, 984-001351, 984-0013522Maker product pagelogitech.com/en-us/products/speakers/bluetooth-speakers/boom-3.htmlRead 23 October 2026This page lists part number 984-001350. The other colour part numbers come from the retailer pages in the sources.18Retailer pagegreentoe.com/product/Ultimate_Ears_BOOM_3_Portable_Wireless_Bluetooth_Speaker__Night_Black__984-001348Read 23 October 2026Night Black is part number 984-001348. Lagoon Blue is 984-001350 on the maker page.19Spec databasegearbrain.com/devices/3C308330C41B11EB91B0D0B61C6BC496.htmlRead 23 October 2026Ultraviolet Purple is part number 984-001351.20Spec databasegearbrain.com/devices/081361C5C3FC11EB91B0D0B61C6BC496.htmlRead 23 October 2026Sunset Red is part number 984-001352.

GTIN / EAN

Not available

Not available

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

3 May 20229Press articlenotebookcheck.net/Marshall-unveils-Willen-and-Emberton-II-speakers-with-Stack-Mode-feature.617447.0.htmlRead 23 October 2026Marshall revealed the speaker on 3 May 2022. SoundGuys lists the same release date.

30 August 20188Press releasenews.logitech.com/press-releases/news-details/2018/Introducing-Ultimate-Ears-BOOM-3-and-MEGABOOM-3-Packed-With-New-Features/default.aspxRead 23 October 2026

Status

Available1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026The maker still sells it next to the Emberton III. The support page says Released in 2022.

Available1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026US store sells it at 149.99 USD with an Add to cart button (read 2026-10-23). RTINGS says the BOOM 4 replaced it, but the maker still sells it.

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.

Marshall Emberton III18Reviewwhathifi.com/news/rock-on-marshalls-third-gen-portable-speakers-are-here-to-rock-your-world-wherever-you-goRead 23 October 2026What Hi-Fi calls the Emberton III a sequel to the second-generation Emberton and says it is slightly larger than its predecessor.19Press articlet3.com/tech/bluetooth-speakers/marshall-emberton-3-reviewRead 23 October 2026T3's review calls the Emberton III the replacement for the Emberton II.

Ultimate Ears BOOM 411Reviewrtings.com/speaker/reviews/ultimate-ears/boom-3Read 23 October 2026Public notice: this speaker was replaced by the Ultimate Ears BOOM 4.21Reviewtrustedreviews.com/reviews/ultimate-ears-boom-4Read 23 October 2026Trusted Reviews says a successor to the UE Boom 3 finally arrived in the Boom 4.

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

$169.999Press articlenotebookcheck.net/Marshall-unveils-Willen-and-Emberton-II-speakers-with-Stack-Mode-feature.617447.0.htmlRead 23 October 2026Pre-order price 169.99 USD in North America. SoundGuys lists MSRP 169.99 USD. Tax treatment not stated.

$149.998Press releasenews.logitech.com/press-releases/news-details/2018/Introducing-Ultimate-Ears-BOOM-3-and-MEGABOOM-3-Packed-With-New-Features/default.aspxRead 23 October 2026Suggested retail price for BOOM 3 is 149.99 USD. US price, tax treatment not stated.

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.

€16910Press articlenotebookcheck.com/Der-Marshall-Emberton-II-startet-mit-Stack-Modus-20-Watt-Leistung-und-30-Stunden-Laufzeit.616924.0.htmlRead 23 October 20263 May 2022 launch report: available now at a suggested retail price of 169 EUR. hifi.de also lists a German UVP of 169 euro. Tax treatment not stated.11Press articlehifi.de/news/marshall-emberton-2-bluetooth-nachfolger-mit-30-stunden-laufzeit-97115Read 23 October 2026Launch news: listed in the Marshall online shop with a UVP of 169 Euro.

€1509Press articlemobiflip.de/ue-boom-megaboom-3Read 23 October 2026German IFA 2018 launch report: UE Boom 3 costs 150 Euro. Igor'sLAB also gives a German EIA of 150 euros. Stored as the reported 150. No maker euro document was found. Tax treatment not stated.10Reviewigorslab.de/en/ultimate-ears-boom-3-in-test-bluetooth-party-cracker-or-windyRead 23 October 2026Review states an EIA (German list price) of 150 euros.

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/emberton-iiRead 23 October 2026

US1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026US store page, reference market.

ColoursiThe maker's own colour names

Black and Brass, Black and Steel, Cream1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table lists Black and Brass and Black and Steel. The page JSON-LD and RTINGS also list Cream.

Night Black, Sunset Red, Lagoon Blue, Ultraviolet Purple8Press releasenews.logitech.com/press-releases/news-details/2018/Introducing-Ultimate-Ears-BOOM-3-and-MEGABOOM-3-Packed-With-New-Features/default.aspxRead 23 October 2026Four launch colours: Night (Black), Sunset (Red), Lagoon (Blue), Ultraviolet (Purple). Written as the retailer and archived maker pages write them.

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/emberton-iiRead 23 October 2026

Portable1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Maker calls it a super-portable wireless Bluetooth speaker with a carry loop and battery.

Audio

9 of 18 differ

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

Stereo1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Stereo/mono: Stereo. True Stereophonic is the multi-directional playback feature, not a wireless left and right pair.

Stereo3Maker product pageweb.archive.org/web/20230314222408/https://www.ultimateears.com/en-us/wireless-speakers/boom-3.htmlRead 23 October 2026Maker text: stereophonic audio that radiates evenly in all directions. One physical speaker.14Reviewtrustedreviews.com/reviews/ultimate-ears-boom-3Read 23 October 2026Review calls it a stereo speaker with drivers firing in opposite directions.

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 Emberton II

Driver type	Count	Diameter (mm)
Dynamic full-range	2	50.8

Source1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Two 2 inch 10 W full range, driver type dynamic. The nominal 2 inch converts exactly to 50.8 mm. The per-driver 10 W has no continuous or RMS basis, so it is not stored per driver.

BUltimate Ears BOOM 3

Driver type	Count	Diameter (mm)
Active driver	2	38

Source1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026AUDIO row: two 2 inch drivers and two 2 x 4 inch passive radiators. The 2 inch figure is a nominal class. The lab test measured 38 mm, which is stored. See the Fnac lab source.12Measurementleclaireur.fnac.com/test/27027-test-labo-de-lultimate-ears-boom-3-des-ameliorations-bienvenues-mais-surtout-ergonomiquesRead 23 October 2026Labo Fnac measured the two active drivers at 38 mm diameter and the passive radiators at 40 x 80 mm. The maker rounds to 2 inch.13Reviewm.gsmarena.com/ultimate_ears_boom_3_review-news-35813.phpRead 23 October 2026Two active drivers firing left and right and two passive radiators below them.14Reviewtrustedreviews.com/reviews/ultimate-ears-boom-3Read 23 October 2026Two 2 inch active drivers, each paired with a passive radiator.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

21Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026

21Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 202614Reviewtrustedreviews.com/reviews/ultimate-ears-boom-3Read 23 October 2026Two passive radiators, one per side.

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.

20W1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Power amplifiers two 10 W Class D. Stored 20 as the sum of the two amplifiers. No continuous, RMS or peak basis is stated. Notebookcheck also reports 20 W.

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.

60Hz1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Published frequency range 60-20,000 Hz. No tolerance stated. The separate 87 dB SPL at 1 m maker claim is not a measurement.

90Hz1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Published 90 Hz to 20 kHz. No tolerance 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.

20kHz1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Published frequency range 60-20,000 Hz. No tolerance stated.

20kHz1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Published 90 Hz to 20 kHz. No tolerance stated.

Signal-to-noise ratio (claimed)

Not available

Not available

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

No1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Adjustable bass and treble controls: No. Customise sound: yes, equaliser presets in the app. Fixed presets only.

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Key features: 4 presets and a customized tuner.6Maker product pagesupport.logi.com/hc/en-us/articles/16007695217943-How-can-I-customize-the-EQRead 23 October 2026Support article: drag the nodes of any EQ mode in the UE | BOOM app. One custom EQ can be saved for BOOM 3.

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

Not available

57Maker product pageultimateears.com/en-us/discover/c/appsRead 23 October 2026Maker app page describes a fully customizable 5-band equalizer in the BOOM app. Trusted Reviews also counts five bands for BOOM 3.14Reviewtrustedreviews.com/reviews/ultimate-ears-boom-3Read 23 October 2026App has four presets and a custom setting with five EQ bands.

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

Not available

Not available

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

Marshall, Push, Voice13Reviewt3.com/reviews/marshall-emberton-ii-reviewRead 23 October 2026App presets: Marshall signature sound, Push (boosts bass and treble) and Voice. Fixed presets, no manual equalizer.

The Standard, Cramped Spaces, Voices, Bass Jump15Reviewtechradar.com/reviews/ultimate-ears-boom-3Read 23 October 2026App presets: The Standard, Cramped Spaces, Voices and Bass Jump, plus a custom tuner. Maker says four presets.

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

Not available

Yes15Reviewtechradar.com/reviews/ultimate-ears-boom-3Read 23 October 2026The app can link two UE Boom 3 speakers for stereo sound. What Hi-Fi and Expert Reviews say the same.16Reviewwhathifi.com/reviews/ultimate-ears-boom-3Read 23 October 2026The Boom app lets you link two Boom 3s for stereo sound. Its tech specs box lists the larger MEGABOOM 3 size and weight, so those values are not used.17Reviewexpertreviews.co.uk/ue/1407679/ultimate-ears-boom-3-review-boom-2-successorRead 23 October 2026Two Boom 3 speakers can run as a stereo pair.

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

Stack mode5Owner's manualassets.ctfassets.net/javen7msabdh/29CADFcziaeD0mjR7nOJ5M/ed8d92ba6d699bb42e000e674b6a131d/Marshall-Emberton-II-User-Manual_EN.pdfRead 23 October 2026Page 7 Stack mode links two or more Emberton II speakers that play in sync. No maximum is stated.6Maker product pagemarshall.com/us/en/support/speakers/support-for-emberton-ii/how-to-use-stack-modeRead 23 October 2026Stack mode works only between Emberton II, Middleton (1st gen) and Willen (1st gen). Marshall recommends stacking the same model.

PartyUp3Maker product pageweb.archive.org/web/20230314222408/https://www.ultimateears.com/en-us/wireless-speakers/boom-3.htmlRead 23 October 2026PartyUp in the BOOM app. Works with BOOM, MEGABOOM and HYPERBOOM speakers.

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

1503Maker product pageweb.archive.org/web/20230314222408/https://www.ultimateears.com/en-us/wireless-speakers/boom-3.htmlRead 23 October 2026Archived page says over 150 speakers. The press release and the support article say up to 150, which is stored.5Maker product pagesupport.logi.com/hc/en-us/articles/19154583137175-How-To-Use-The-Ultimate-Ears-Boom-AppRead 23 October 2026PartyUp pairs up to 150 speakers. Any BOOM or MEGABOOM can join.

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

6 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/emberton-iiRead 23 October 2026

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Maker page and Compatibility row: plays audio from Bluetooth devices using A2DP.

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

5.11Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Wireless connectivity Bluetooth 5.1.

Not available

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

SBC12Measurementsoundguys.com/marshall-emberton-ii-review-117005Read 23 October 2026Review: Bluetooth 5.1, SBC only, no multipoint. Mighty Gadget and Delamar also say SBC only.14Reviewmightygadget.com/marshall-emberton-ii-reviewRead 23 October 2026Review: limited to Bluetooth and only SBC.15Reviewdelamar.de/test/marshall-emberton-ii-testRead 23 October 2026Review: apart from SBC the speaker supports no further Bluetooth audio codecs.

SBC17Reviewexpertreviews.co.uk/ue/1407679/ultimate-ears-boom-3-review-boom-2-successorRead 23 October 2026Review: connects through Bluetooth using the SBC codec, with no aptX. Only SBC is stored.

Bluetooth profiles

Not available

A2DP1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Compatibility row names the A2DP audio profile. Bluetooth version is not published.

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.

Not available

Not available

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

Not available

Yes3Maker product pageweb.archive.org/web/20230314222408/https://www.ultimateears.com/en-us/wireless-speakers/boom-3.htmlRead 23 October 2026Wireless capabilities: pair up to 8 Bluetooth source devices and connect up to two source devices at the same time.

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

Not available

23Maker product pageweb.archive.org/web/20230314222408/https://www.ultimateears.com/en-us/wireless-speakers/boom-3.htmlRead 23 October 2026Connect up to two source devices at the same time. The current US page no longer repeats this line.

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

10m1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Bluetooth range 10 m / 30 ft. Delamar also found about ten metres.

45m1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Mobile range of play up to 45 m.

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

No1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Wi-Fi No.16Reviewrtings.com/speaker/reviews/marshall/emberton-iiRead 23 October 2026Public header says Wi-Fi: No.

No11Reviewrtings.com/speaker/reviews/ultimate-ears/boom-3Read 23 October 2026Public header says Wi-Fi: No. Bluetooth only.14Reviewtrustedreviews.com/reviews/ultimate-ears-boom-3Read 23 October 2026Bluetooth only, no Wi-Fi.

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.

No1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Wired connectivity No. The USB-C port is a power input in the manual.

No13Reviewm.gsmarena.com/ultimate_ears_boom_3_review-news-35813.phpRead 23 October 2026Review: the only way to input sound is Bluetooth. The microUSB port is for charging.

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

No1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Wired connectivity No.

No13Reviewm.gsmarena.com/ultimate_ears_boom_3_review-news-35813.phpRead 23 October 2026Review: no input other than Bluetooth. No USB drive 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 Emberton II

Connector	Count	Role
USB-C	1	Power input for charging

Source5Owner's manualassets.ctfassets.net/javen7msabdh/29CADFcziaeD0mjR7nOJ5M/ed8d92ba6d699bb42e000e674b6a131d/Marshall-Emberton-II-User-Manual_EN.pdfRead 23 October 2026Page 4 device layout: one USB-C power input. Data and charging standard versions are not stated.

BUltimate Ears BOOM 3

Connector	Count	Role
Micro USB	1	Charging input under the rear weather door
Other	1	Charging contacts on the base for the POWER UP dock (sold separately)

Source12Measurementleclaireur.fnac.com/test/27027-test-labo-de-lultimate-ears-boom-3-des-ameliorations-bienvenues-mais-surtout-ergonomiquesRead 23 October 2026Lab confirms a microUSB port behind the rear cover, no mini-jack, and a port on the base for the Power Up dock.13Reviewm.gsmarena.com/ultimate_ears_boom_3_review-news-35813.phpRead 23 October 2026Review: microUSB charging port behind a flap and a metal connector on the base for the Power Up dock. No aux input.

Controls and software

2 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.

No1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: Microphone system No, voice command No.12Measurementsoundguys.com/marshall-emberton-ii-review-117005Read 23 October 2026Review: no built-in microphone for calls. Agrees with the maker spec table.16Reviewrtings.com/speaker/reviews/marshall/emberton-iiRead 23 October 2026Public header says Speakerphone: No and Voice Assistant: No. Locked numeric cells were not read.

No11Reviewrtings.com/speaker/reviews/ultimate-ears/boom-3Read 23 October 2026Public header says Speakerphone: No. Locked numeric cells were not read.

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

Bluetooth pairing button, Multidirectional control knob for power, play and pause, skip, fast forward, rewind and volume, Stack mode via Bluetooth button presses5Owner's manualassets.ctfassets.net/javen7msabdh/29CADFcziaeD0mjR7nOJ5M/ed8d92ba6d699bb42e000e674b6a131d/Marshall-Emberton-II-User-Manual_EN.pdfRead 23 October 2026Page 4: Bluetooth button, control knob (hold 2 s on or off, push once play or pause, push right or left skip, hold right or left fast forward or rewind, hold up or down volume). Page 7: triple press of the Bluetooth button starts or ends Stack mode. The 10-segment battery indicator is a status display.

Power button, Bluetooth pairing button, Volume up and down buttons, Magic Button for play, pause and skip, Battery level check (volume up and down together)4Owner's manualsupport.logi.com/hc/en-us/articles/18601577361559-Getting-Started-BOOM-3Read 23 October 2026Power button, Bluetooth pairing button, volume plus and minus, Magic Button (short press play or pause, double press skip), plus and minus together for battery level.

Companion app

Marshall Bluetooth7Maker product pagemarshall.com/us/en/support/speakers/support-for-emberton-ii/how-to-use-the-appRead 23 October 2026The Marshall Bluetooth app controls the Emberton II.

UE | BOOM4Owner's manualsupport.logi.com/hc/en-us/articles/18601577361559-Getting-Started-BOOM-3Read 23 October 2026The guide points to the Ultimate Ears BOOM and MEGABOOM app. The support EQ article calls it UE | BOOM.

App platforms

iOS, Android7Maker product pagemarshall.com/us/en/support/speakers/support-for-emberton-ii/how-to-use-the-appRead 23 October 2026Page links the Apple App Store and Google Play listings of Marshall Bluetooth.

iOS, Android5Maker product pagesupport.logi.com/hc/en-us/articles/19154583137175-How-To-Use-The-Ultimate-Ears-Boom-AppRead 23 October 2026Download the BOOM app from the Google Play store or the App Store. The article lists BOOM 3 as supported.

User firmware updates

Yes1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Page text: connect to the Marshall Bluetooth app for Over-the-Air (OTA) updates.5Owner's manualassets.ctfassets.net/javen7msabdh/29CADFcziaeD0mjR7nOJ5M/ed8d92ba6d699bb42e000e674b6a131d/Marshall-Emberton-II-User-Manual_EN.pdfRead 23 October 2026Page 9: the Marshall Bluetooth app updates the firmware.

Yes5Maker product pagesupport.logi.com/hc/en-us/articles/19154583137175-How-To-Use-The-Ultimate-Ears-Boom-AppRead 23 October 2026Speaker Updates: a tap in the app updates the speaker.13Reviewm.gsmarena.com/ultimate_ears_boom_3_review-news-35813.phpRead 23 October 2026Review: the app can update the speaker software.

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

4 of 17 differ

Built-in battery

Yes1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 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/emberton-iiRead 23 October 2026Play time 30+ hours. Stored 30, the plus qualifier is here. No volume, EQ preset or codec is stated.

15h1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Up to 15 hours on a single charge. Varies with use, settings and environment. No volume 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.

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

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Battery chemistry

Lithium-ion1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: built-in, rechargeable Li-ion battery. Capacity is not published.5Owner's manualassets.ctfassets.net/javen7msabdh/29CADFcziaeD0mjR7nOJ5M/ed8d92ba6d699bb42e000e674b6a131d/Marshall-Emberton-II-User-Manual_EN.pdfRead 23 October 2026Page 6 battery care guide: high-performance lithium-ion battery.

Lithium-ion1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Embedded spec table: Rechargeable Lithium-Ion Battery. Capacity and voltage are not published.

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/emberton-iiRead 23 October 2026Spec table: charging time 3 hours. Adapter and use while charging are not stated.

Not available

Quick charge duration

20min1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: 20 minutes charge gives 4 hours of playtime.

Not available

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

4h1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: 20 minutes charge gives 4 hours of playtime. Volume and starting charge are not stated.

Not available

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

Not available

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

Not available

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Charges other devices

Not available

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

Not available

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

Not available

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Durability

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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/emberton-iiRead 23 October 2026IP67: immersion in 1 m of water for up to 30 minutes.

IP671Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026IP67, can be submerged for up to 30 minutes.

Floats

Not available

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026

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

Not available

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Page says the speaker passed more than 25 durability tests including multiple drop tests. Archived maker page footnote lists BOOM 3 as drop proof. No drop height is stated.

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.

Not available

Fabric loop13Reviewm.gsmarena.com/ultimate_ears_boom_3_review-news-35813.phpRead 23 October 2026Fabric loop on the back.14Reviewtrustedreviews.com/reviews/ultimate-ears-boom-3Read 23 October 2026Small fabric loop on the back for a carabiner. No carabiner included.

Measured

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

9.13h12Measurementsoundguys.com/marshall-emberton-ii-review-117005Read 23 October 2026SoundGuys standardized battery test: 9 h 8 min, stored as 9.13. Firmware 14.0.35, app 3.2.4. The review gives no test volume. SoundGuys' public method plays music peaking at 75 dB(SPL). Far below the maker claim of 30+ hours. Labo Fnac reports almost 17 h and Delamar reports 30+ hours at low to medium volume, so results depend on volume.

15.45h12Measurementleclaireur.fnac.com/test/27027-test-labo-de-lultimate-ears-boom-3-des-ameliorations-bienvenues-mais-surtout-ergonomiquesRead 23 October 2026Labo Fnac average of 15 h 27 min (15.45 h). Volume and source are not published on the page.

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

87dB17Measurementleclaireur.fnac.com/test/120210-test-labo-de-la-marshall-emberton-iiRead 23 October 2026Labo Fnac test of 23 August 2022: output reaches 87 dB at 100 Hz, almost nothing at 60 Hz. The page gives no microphone distance or distortion limit. Labo Fnac's BOOM 3 test states 50 cm and 10 percent distortion. The value equals the maker's 87 dB SPL at 1 m claim, so check it.

87dB12Measurementleclaireur.fnac.com/test/27027-test-labo-de-lultimate-ears-boom-3-des-ameliorations-bienvenues-mais-surtout-ergonomiquesRead 23 October 2026Microphone at 50 cm. Best level 87 dB at 10 percent distortion, measured at 60, 80 and 100 Hz. The 87 dB is the 100 Hz result. Battery power.

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.

AMarshall Emberton II

Not available

BUltimate Ears BOOM 3

Connection	Latency (ms)
Bluetooth	141

Source12Measurementleclaireur.fnac.com/test/27027-test-labo-de-lultimate-ears-boom-3-des-ameliorations-bienvenues-mais-surtout-ergonomiquesRead 23 October 2026Bluetooth latency of 141 ms. Source device, codec and app are not stated.

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

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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.

Width160Height68Depth76mm(6.3 × 2.7 × 3 in)1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: width 160 mm, height 68 mm, depth 76 mm. Bare speaker in normal horizontal orientation. Marshall also lists inch figures.

Width73Height184Depth73mm(2.9 × 7.2 × 2.9 in)1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Embedded Specs and Compatibility: height 184 mm, width 73 mm. The archived maker page calls 73 mm the diameter, so width and depth are both 73 mm.

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

700g(1.5 lb)1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Spec table: 0.7 kg / 1.5 lb, so 700 g. Maker figure is rounded. Labo Fnac weighed 674 g and SoundGuys 673 g.

608g(1.3 lb)1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Embedded Specs and Compatibility: 608 g (21.45 oz).

Body materials

Silicone sleeve, Metal grille1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Page text: textured silicone sleeve and solid metal grille. Internal enclosure material is not stated.

Two-tone performance fabric, Rubberised plastic14Reviewtrustedreviews.com/reviews/ultimate-ears-boom-3Read 23 October 2026Top and bottom are rubberised plastic and the main body is a woven fabric.

Certifications

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FCC IDs

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Other certifications

EU Declaration of Conformity (2014/53/EU RED), RoHS (2011/65/EU)8Maker spec sheet (PDF)assets.ctfassets.net/javen7msabdh/3Ryqpv66DmmXRLwtonVyqL/e45e1a50c546892505f0aed538bf81d1/pdf_emberton_ii.pdfRead 23 October 2026EU Declaration of Conformity for EMBERTON II, English page 3, signed Stockholm 2022-01-12: Directive 2014/53/EU (RED) and 2011/65/EU (RoHS). Model-level EU claim only.

Not available

In the box

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In the box

Emberton II speaker, USB-C charging cable, User manual with legal and safety information1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Included in the box: Emberton II speaker, user manual with legal and safety information, USB-C charging cable.

BOOM 3 speaker, Micro-USB cable, Quick Start Guide1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026Package contents: BOOM 3 Speaker, Micro-USB Cable, Quick Start Guide.

Links

Not compared

Product page

www.marshall.com/us/en/product/emberton-ii1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026

www.ultimateears.com/en-us/shop/p/boom-3.984-0013501Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026

Spec sheet

www.marshall.com/us/en/product/emberton-ii1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026

www.logitech.com/en-us/products/speakers/bluetooth-speakers/boom-3.html2Maker product pagelogitech.com/en-us/products/speakers/bluetooth-speakers/boom-3.htmlRead 23 October 2026Maker Specs and Details tab: part number, dimensions, weight and the technical specification text.

Manual

assets.ctfassets.net/javen7msabdh/29CADFcziaeD0mjR7nOJ5M/ed8d92ba6d699bb42e000e674b6a131d/Marshall-Emberton-II-User-Manual_EN.pdf5Owner's manualassets.ctfassets.net/javen7msabdh/29CADFcziaeD0mjR7nOJ5M/ed8d92ba6d699bb42e000e674b6a131d/Marshall-Emberton-II-User-Manual_EN.pdfRead 23 October 2026Maker Full Online Manual in English, printed pages 3-9.

support.logi.com/hc/en-us/articles/18601577361559-Getting-Started-BOOM-34Owner's manualsupport.logi.com/hc/en-us/articles/18601577361559-Getting-Started-BOOM-3Read 23 October 2026Maker Getting Started guide for BOOM 3. No PDF manual was found.

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

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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

2years1Maker product pageultimateears.com/en-us/shop/p/boom-3.984-001350Read 23 October 2026

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