Wireless speakers / Compare

Marshall Willen II vs Ultimate Ears BOOM 3

A

Product A: Marshall

Willen II

45 of 96 known

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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 Willen II

BUltimate Ears BOOM 3

General

6 of 8 differ

Series

Willen1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Marshall names the speaker Willen II, the second Willen generation.

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.

10067141Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Item number 1006714 is the pid of the Black and Brass selection on this page. The Cream colour has its own item number, which is not stored.

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.

19 August 20243Press articlewhathifi.com/news/rock-on-marshalls-third-gen-portable-speakers-are-here-to-rock-your-world-wherever-you-goRead 13 October 2026Article published 19 August 2024 announces the speaker.

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/willen-iiRead 13 October 2026Maker sells the speaker with an Add to Bag button at USD 129.99 on the accessed date.

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.

Not available

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.

$1193Press articlewhathifi.com/news/rock-on-marshalls-third-gen-portable-speakers-are-here-to-rock-your-world-wherever-you-goRead 13 October 2026Launch price listed as USD 119 for the Willen II.

$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.

€1193Press articlewhathifi.com/news/rock-on-marshalls-third-gen-portable-speakers-are-here-to-rock-your-world-wherever-you-goRead 13 October 2026Launch price listed as EUR 119. European prices include VAT.

€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.

US, EU3Press articlewhathifi.com/news/rock-on-marshalls-third-gen-portable-speakers-are-here-to-rock-your-world-wherever-you-goRead 13 October 2026Prices evidenced for the US and Europe. The article also gives GBP 99 and AUD 199.

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, Cream1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Colorways table lists Black and Brass and 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/willen-iiRead 13 October 2026Maker calls it a portable speaker.

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

10 of 18 differ

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

Mono1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Stereo/mono row says Mono.

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 Willen II

Driver type	Count	Diameter (mm)
Full-range driver	1	50.8

Source1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Audio specification says one 2 inch 10 W full range driver. The 2 inch size is converted exactly to 50.8 mm. The rating basis is not stated, so no per-driver rated power is stored.

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/willen-iiRead 13 October 2026Audio specification says 2 passive radiators.

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.

10W1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026The 10 W figure belongs to the single full range driver and its rating basis is not stated. The page also lists a 38 W Class D amplifier, which is an amplifier rating and is not stored as audio output.

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.

75Hz1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Frequency range 75 to 20,000 Hz. Tolerance is not stated. The 88 dB SPL at 1 m maker claim is not entered as 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/willen-iiRead 13 October 2026Frequency range 75 to 20,000 Hz. Tolerance is not 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.

No4Reviewdigit.in/reviews/audio-video/marshall-willen-ii-review-a-small-package-that-packs-a-punch.htmlRead 13 October 2026Review says the Marshall app has three presets and no custom EQ. Presets alone do not qualify as an adjustable equalizer.

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, Voice4Reviewdigit.in/reviews/audio-video/marshall-willen-ii-review-a-small-package-that-packs-a-punch.htmlRead 13 October 2026Review names the app presets Marshall (default), Push and Voice.

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.

Not available

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

8 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.

Yes5Reviewtest-aankoop.be/hightech/draadloze-speakers/vergelijker/marshall-willen-ii/461/110300Read 13 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.

5.31Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Wireless connectivity row says Bluetooth 5.3 LE. The maker support page says Bluetooth 5.2. The product page spec table is used. Bluetooth LE Audio-ready wording is not a statement of current support, so LE Audio and Auracast are not stored.

Not available

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

AAC5Reviewtest-aankoop.be/hightech/draadloze-speakers/vergelijker/marshall-willen-ii/461/110300Read 13 October 2026Comparison table lists AAC: Ja and aptX: Nee. SBC is not listed, so only AAC is stored. The maker states no 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.

Yes1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Product details row says Bluetooth multipoint connectivity: Yes.

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.

22Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Pairing section says Willen II can be connected with 2 devices at a time and remembers up to 8 previously paired devices.

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/willen-iiRead 13 October 2026Bluetooth range row says up to 10 m in free field on every regional page opened. Several retailers and reviews say 100 m. The maker figure is used.

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.

Not available

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.

Not available

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.

Not available

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 Willen II

Connector	Count	Role
USB-C	1	Charging power input

Source2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Device layout shows one USB-C power input.

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

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.

Yes1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Built-in microphone for hands-free calls.2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Device layout names a microphone that lets the speaker work as a speaker phone.

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

Power button, Bluetooth pairing and call-routing button, Multi-directional control knob1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Top panel controls: multi-directional control knob, on/off button, Bluetooth pairing button and battery indication.2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Control knob: push once for play/pause and calls, left or right to skip, up or down for volume.

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 Bluetooth1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Compatible apps row names the Marshall Bluetooth app.

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, Android1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Compatible apps row says iOS and Android.

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

Yes2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Troubleshooting says to connect the Marshall Bluetooth app and follow the in-app instructions to get the latest 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

5 of 17 differ

Built-in battery

Yes1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Battery section gives play time and charging time for the built-in battery.

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.

17h1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Play time 17+ hours. Stored 17 for the stated threshold with the plus qualifier. No volume or setting 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

Not available

Not available

Battery chemistry

Lithium-ion2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Battery care guide says the speaker has lithium-ion batteries.

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.

2.5h1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Charging time 2.5 hours. Charger rating is not stated on the page. The manual says 5 V, 1.5 A.

Not available

Quick charge duration

20min1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Quick charging: 20 minutes of charge gives 5.5 hours of playtime.

Not available

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

5.5h1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Maker claim of 5.5 hours of playtime after 20 minutes of charging. 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.

5 V, 1.5 A2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Charging section says to use a USB power source of 5 V, 1.5 A.

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

Not available

Charges other devices

Not available

Not available

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/willen-iiRead 13 October 2026IP67 means submersion 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

Not available

Carry featuresiPublished handles, straps, carabiners or wheels.

Fastening strap1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Rubber fastening strap for hanging or fixing the speaker.

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

3 of 6 differ

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

Not available

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.

Not available

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 Willen 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

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.

Width100.5Height100.5Depth43.4mm(4 × 4 × 1.7 in)1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Physical unit table labels width 100.5 mm, height 100.5 mm and depth 43.4 mm. Bare speaker.

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.

360g(12.7 oz)1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Physical unit table, 0.36 kg converted exactly to 360 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 sleeve2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Cleaning section says the silicone sleeve and carry strap can be removed.

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

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

Willen II speaker, USB-C charging cable, User manual and legal and safety information1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026Box contents: speaker, USB-C charging cable, user manual and legal and safety information.

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/willen-ii1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 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

Not available

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

www.marshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdf2Owner's manualmarshall.com/on/demandware.static/-/Library-Sites-SharedLibrary-Marshall/default/dwe0dadd06/images/cms-pages/user/Marshall_Willen_II_OLM_R1_2_en.pdfRead 13 October 2026Maker English full online manual, revision 1.2, nine pages.

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

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year6Retailer pageamazon.com/dp/B0DD7T8H2QRead 13 October 2026Amazon US lists 1 Year Limited warranty. Market is the US.

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.