Wireless speakers / Compare

Sonos Roam 2 vs Ultimate Ears BOOM 4

A

Product A: Sonos

Roam 2

52 of 96 known

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B

Product B: Ultimate Ears

BOOM 4

51 of 96 known

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Every value links to where we found it.

Only differences

ASonos Roam 2

BUltimate Ears BOOM 4

General

5 of 8 differ

Series

Roam13Maker product pagesupport.sonos.com/en/article/charging-sonos-roam-productsRead 8 October 2026Maker groups Roam, Roam SL and Roam 2 under Charging Sonos Roam products. Series is Roam, while the marketed generation and sale SKU remain Roam 2 / ROAM2US1BLK. Support only describes charging to 50%, so no full-charge time is extrapolated.

BOOM1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

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

ROAM2US1BLK, S271Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Exact current US Black Roam 2 ProductGroup JSON-LD variant names SKU ROAM2US1BLK, GTIN13 8720862502680 and InStock offer. S27 is the separate shared regulatory model, sourced to the maker declaration. Original Roam, Roam SL, charging set and other colour SKUs are excluded.12Maker spec sheet (PDF)sonos.com/pdfs/conformity/roam2.pdfRead 8 October 2026Maker EU declaration dated July 22, 2025 explicitly lists ROAM, ROAM SL and ROAM2 under shared regulatory Model S27. S27 is a regulatory family identity, not a claim that their features or sale SKUs are interchangeable.

S001762Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

GTIN / EAN

87208625026801Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

Not available

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

Not available

26 June 20243Press releasenews.logitech.com/press-releases/news-details/2024/The-Rugged-Ultimate-Ears-EVERBOOM-Superior-Sound-That-Is-Waterproof-Dustproof-and-Floatable/default.aspxRead 8 October 2026

Status

Available1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

Available1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

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

Not available

Ultimate Ears BOOM 38Reviewtrustedreviews.com/reviews/ultimate-ears-boom-4Read 10 October 2026Trusted Reviews says a successor to the UE Boom 3 finally arrived in the Boom 4.9Measurementrtings.com/speaker/reviews/ultimate-ears/boom-3Read 23 October 2026RTINGS shows a notice on the BOOM 3 page that it was replaced by the Ultimate Ears BOOM 4.

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

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

$1793Maker spec sheet (PDF)assets.sonos.com/media-kits/hardware/roam2/roam2factsheet.pdfRead 8 October 2026Exact launch fact sheet lists USD 179 and EUR 199 for Roam 2. Normal product, not a wireless charger bundle. US sales-tax treatment is not stated.

$149.993Press releasenews.logitech.com/press-releases/news-details/2024/The-Rugged-Ultimate-Ears-EVERBOOM-Superior-Sound-That-Is-Waterproof-Dustproof-and-Floatable/default.aspxRead 8 October 2026US launch MSRP $149.99 before tax.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€1993Maker spec sheet (PDF)assets.sonos.com/media-kits/hardware/roam2/roam2factsheet.pdfRead 8 October 2026Original normal Roam 2 launch EUR 199. VAT treatment is not explicitly described in the fact sheet.

Not available

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

US1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

US1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

ColoursiThe maker's own colour names

Black1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

Raspberry Red, Enchanting Lilac, Active Black, Cobalt Blue1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

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

Portable1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

Portable1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

Audio

11 of 18 differ

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

Mono5Reviewsoundguys.com/sonos-roam-2-review-119162Read 8 October 2026Exact Roam 2 review explicitly identifies mono playback in one speaker. Two drivers are frequency-specific transducers, not two stereo channels.

Stereo4Reviewrtings.com/speaker/reviews/ultimate-ears/boom-4Read 8 October 2026Public Music verdict describes the single BOOM 4 unit stereo capabilities and soundstage performance. Two-unit stereo linking is a separate field and is not inferred from PartyUp.

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.

ASonos Roam 2

Driver type	Count
Tweeter	1
Elliptical midwoofer	1

Source1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026One powered tweeter and one powered midwoofer with two Class-H amplifiers. Maker gives no transducer dimensions or continuous amplifier watts. No passive radiator count is inferred from this powered-driver inventory.

BUltimate Ears BOOM 4

Driver type	Count	Diameter (mm)
Active audio driver	2	40

Source1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026Specs and Compatibility: two 1.57 in (40 mm) active drivers and two 1.81 x 2.57 in (46.1 x 65.2 mm) passive radiators. Support page lists rounded 2 inch sizes. Rated power not published.2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Support Speaker Specifications: two active drivers and two passive radiators. Support lists a rounded 2 inch driver. The maker product page and Trusted Reviews give 40 mm, which is stored. The support passive radiator size of 2 x 4 inch also differs from the product page 46.1 x 65.2 mm, so the support sizes are treated as rounded.8Reviewtrustedreviews.com/reviews/ultimate-ears-boom-4Read 10 October 2026Full specs list 2x 40mm active drivers.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

Not available

22Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

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

Not available

Not available

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

Not available

Not available

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

Not available

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.

Not available

90Hz2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Maker claim 90 Hz to 20 kHz. No tolerance or test settings 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.

Not available

20kHz2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Maker claim 90 Hz to 20 kHz. No tolerance or test settings 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 pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026User can adjust bass and treble. Loudness is a separate setting, not a third frequency band. Automatic Trueplay is separate from these manual adjustments.

Yes2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

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

25Reviewsoundguys.com/sonos-roam-2-review-119162Read 8 October 2026Review and pictured app explicitly identify a 2-band adjustable EQ, bass and treble. Loudness toggle and Auto Trueplay are not additional user-adjustable frequency bands.

Not available

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

Yes1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Automatic Trueplay adapts audio to environment/content. It must initially be enabled in the Sonos app. Current manual says microphone enabled and registered speaker are required. Bluetooth and Wi-Fi operation are supported after setup.2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Trueplay adapts to environment/content and requires registration and microphones enabled. No setting is inferred from speaker orientation alone.

Not available

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

Not available

Signature, Bass Boost, Cramped Space, Deep Relaxation, Podcast/Vocal1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026Key features: Signature sound plus four pre-set EQ modes in the UE | BOOM app: Bass Boost, Cramped Space, Deep Relaxation and Podcast/Vocal.

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

Yes2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Two compatible Roam 2 speakers can be assigned left/right channels through the Sonos app on Wi-Fi. Maker exact pairing support clarifies Bluetooth playback can feed that pair only while connected to Wi-Fi. Standalone Bluetooth-only stereo pairing away from Wi-Fi is not supported.4Maker product pagesupport.sonos.com/article/pair-sonos-roam-2-with-a-bluetooth-deviceRead 8 October 2026Exact Roam 2 pairing support explicitly says two Roam 2s in a stereo pair can play Bluetooth audio when connected to Wi-Fi. Stereo pairing is unavailable away from Wi-Fi. This prevents implying a Bluetooth-only stereo pair.

Not available

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

Sonos multiroom over Wi-Fi2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Sonos app network grouping of Roam 2 with other compatible Sonos products. Sound Swap transfers playback to a nearby product. This is Wi-Fi ecosystem linking, not Auracast or a published maximum group-size claim.

PartyUp1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026PartyUp compatible with BOOM, MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM. Product page says over 150 speakers. The Getting Started guide says up to 150, see max_linked_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

1505Owner's manualsupport.logi.com/hc/en-us/articles/17139015562519-Getting-Started-UE-BOOM-4Read 10 October 2026UE | BOOM app section: Party Up pairs up to 150 speakers. Any BOOM, MEGABOOM, EVERBOOM, EPICBOOM or HYPERBOOM can join. Product page says over 150, the guide figure is stored. Linking is app based, so the Bluetooth group field is not set.

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

10 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.

Yes5Reviewsoundguys.com/sonos-roam-2-review-119162Read 8 October 2026

Yes2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

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

5.32Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Current exact Roam 2 guide explicitly claims Bluetooth 5.3. This current manual claim takes precedence under the repository maker-document hierarchy. The current shop Tech Specs says 5.2 and original launch fact sheet says 5.0. Discrepancy is retained here, with no inferred hardware revision, update date or firmware bridge.

5.02Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

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

SBC, AAC5Reviewsoundguys.com/sonos-roam-2-review-119162Read 8 October 2026Matching Roam 2 review explicitly identifies SBC and AAC receive codecs. No aptX, LDAC, LC3 or LE Audio reception is inferred from the claimed Bluetooth version. Original Roam standardized battery-test values are not transferred to Roam 2.

SBC2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

Bluetooth profiles

Not available

A2DP2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

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.

No6Reviewrtings.com/speaker/reviews/sonos/roam-2Read 8 October 2026

No4Reviewrtings.com/speaker/reviews/ultimate-ears/boom-4Read 8 October 2026Public Music/Outdoors verdict explicitly lists no Bluetooth multi-device pairing.

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

16Reviewrtings.com/speaker/reviews/sonos/roam-2Read 8 October 2026Public Podcasts overview states only one audio source can pair at a time, and public discussion identifies lack of concurrent multi-device support. Stored 1 counts concurrent Bluetooth source devices, not Wi-Fi grouping or pairing memory. Protected numerical latency, battery, frequency-response and SPL tables were not read or copied. Public roughly five-hour battery prose lacks the needed complete test conditions and is not presented as a precise measured value.

Not available

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

Not available

45m2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

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

Yes2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026

No4Reviewrtings.com/speaker/reviews/ultimate-ears/boom-4Read 8 October 2026Public Wi-Fi row explicitly says 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.

802.11a, 802.11b, 802.11g, 802.11n, 802.11ac2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Current exact guide publishes 802.11a/b/g/n/ac on 2.4 or 5 GHz. Original launch fact sheet omits 802.11a. The current exact manual wins. No 6 GHz or Wi-Fi 6 feature is inferred.

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.

AirPlay 22Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Apple AirPlay 2 over Wi-Fi, Apple iOS 11.4 or higher. Sonos multiroom linking is separately represented, not an assumed Bluetooth broadcast protocol.

Not available

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

No8Reviewhifi.de/test/sonos-roam-2-test-205052Read 8 October 2026Exact Roam 2 connectivity section states music can arrive only wirelessly and USB-C does not allow music playback. Charging input is not USB digital audio.

No2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Connection Type is Bluetooth. Wireless speaker, charging by USB-C cable. USB-C is documented for charging only.

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

No8Reviewhifi.de/test/sonos-roam-2-test-205052Read 8 October 2026The same explicit wireless-only source statement excludes USB storage-device music playback. No USB file formats are inferred.

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.

ASonos Roam 2

Connector	Count	Role
USB-C	1	Charging power input

Source2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Complete Roam 2 Connector Panel has separate Bluetooth button, power button and one USB-C charging port. No charging base is counted as a speaker connector. USB port protocol version is not stated.

BUltimate Ears BOOM 4

Connector	Count	Role
USB-C	1	Charging input

Source2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Speaker is charged via USB-C. Device input voltage/current not established by the separately listed adapter rating.

Controls and software

5 of 8 differ

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

No7Reviewtechradar.com/audio/wireless-bluetooth-speakers/sonos-roam-2-reviewRead 8 October 2026Exact Roam 2 feature discussion explicitly says it cannot be used as a speakerphone or for conference calls on Bluetooth. Its microphone is for voice control/Trueplay, not phone-call support.

No2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

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.

Sonos Voice Control, Amazon Alexa2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Current exact guide: Sonos Voice Control on Wi-Fi and Bluetooth, with playback commands limited on Bluetooth. Amazon Alexa works on Wi-Fi. Setup, language and region availability apply. Google Assistant is not claimed.

Not available

Controls

Play/pause, track skip and replay button, Volume up and down buttons, Microphone mute button, Bluetooth pairing button, Power, sleep and wake button1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 20262Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Roam 2 guide describes play/pause and track controls, volume plus/minus, microphone mute, Bluetooth pairing and independent power/sleep/wake buttons. LED status indicators are not classified as entertainment lighting.

Power, Bluetooth pairing, Volume up/down, Play/pause, Next/previous track, Magic Button playlist shortcut, Battery level2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

Companion app

Sonos9Maker product pagesupport.sonos.com/en-us/article/sonos-app-requirementsRead 8 October 2026

UE | BOOM2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

App platforms

iOS, iPadOS, Android, macOS, Windows9Maker product pagesupport.sonos.com/en-us/article/sonos-app-requirementsRead 8 October 2026Current Sonos app supports iOS/iPadOS and Android mobile devices. Sonos desktop controller supports macOS and Windows with reduced system-management features. Initial setup and adding products require mobile app. Sonos S1 is not the Roam 2 app and its different minimum versions are excluded. Web controller is not counted as a separate native OS app.

iOS, Android2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

User firmware updates

Yes10Maker product pagesupport.sonos.com/en-us/article/update-your-sonos-speakersRead 8 October 2026Maker provides user system software update checks and automatic updates in the current Sonos iOS/Android app. Roam 2 is a current Sonos network speaker. Wi-Fi/app setup is required for this route, not a standalone Bluetooth update claim.

Yes5Owner's manualsupport.logi.com/hc/en-us/articles/17139015562519-Getting-Started-UE-BOOM-4Read 10 October 2026Speaker Updates and Party Up instructions explicitly document OTA firmware updates from the UE | BOOM app.

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

Not available

No2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Indicator Lights lists four LEDs: power, Bluetooth, Magic button and one charging LED. No decorative lighting is listed.

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

8 of 17 differ

Built-in battery

Yes1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 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.

10h1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Up to 10 hours continuous music playback on one charge at moderate volumes. This is normal playback, not ten-day sleep retention or a battery-saving-mode total. Exact volume, connection, codec and firmware conditions are not specified. Runtime varies with usage.

15h1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026Up to 15 hours. Varies with settings, volume and environmental conditions. High volume and bass boost reduce runtime.

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.

18Wh2Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Current exact Roam 2 Specifications Battery row explicitly publishes 18 Wh. This is pack energy, not USB input power, sleep duration or a calculation from an assumed voltage.

11.52Wh2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Built-in Li-ion rechargeable battery 11.52 Wh. No pack voltage or mAh inferred.

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.

5,000mAh1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Current exact product Tech Specs explicitly claims a Li-ion 5000 mAh battery. Nominal battery voltage is not published here and is not back-calculated from the separate 18 Wh guide claim.

Not available

Nominal battery voltage

Not available

Not available

Battery chemistry

Lithium-ion1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

Lithium-ion1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

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

Not available

No2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Battery user replaceable: Not recommended, improper assembly may affect waterproof performance. Maker does not document user replacement.

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

Not available

3h2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Battery Charge Speed: less than 3 hours from empty to full with a Type C charger of 7.5 W or above. Stored as 3, the qualifier is here.

Quick charge duration

Not available

Not available

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

Not available

Not available

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

USB-C: 5 V / 3 A port rating1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Exact speaker USB-C Port table publishes 15 W, 5 V / 3 A. Stored text preserves the device port voltage/current rating. Current guide also gives a 5-12 W charger-delivery range for maximum charging speed and several minimum-adapter recommendations. These are different/unclear bases, so charging_input_max_w is not inferred from either charger advice or the port rating.

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

No7Reviewtechradar.com/audio/wireless-bluetooth-speakers/sonos-roam-2-reviewRead 8 October 2026Exact Roam 2 Design paragraph explicitly says no reverse charging, while describing USB-C charging and Qi reception. Wireless charging reception is not power-bank output.

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.

Yes1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Speaker can be charged with any Qi-certified wireless charger or optional Sonos Roam Wireless Charger. Accessory is sold separately, not supplied.

Not available

Durability

2 of 5 differ

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

IP671Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Maker IP67 dustproof and waterproof claim, immersion at 1 m for up to 30 minutes. Does not establish floating or a drop-test height.

IP671Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

Floats

Not available

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

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

Yes1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Exact product features explicitly state Drop resistant and describe shock-absorbing materials protecting against drops. No quantified height or surface is published.

Yes1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

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

Not available

Not available

Carry featuresiPublished handles, straps, carabiners or wheels.

Not available

Bungee loop1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

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.

Not available

12h6Measurementrtings.com/speaker/reviews/ultimate-ears/boom-4Read 10 October 2026Public Outdoors verdict states 12 hours of battery life for the tested BOOM 4. Locked numeric tables were not read. Maker claim is 15 hours.7Measurementrtings.com/speaker/tests/active-features/batteryRead 10 October 2026Public method: latest firmware, full charge, audio track looped at 80 dB SPL from 1 m until the speaker runs out of charge. Speaker-specific sound mode, EQ and firmware are not published.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Dimensions and weight

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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.

Width62Height168Depth60mm(2.4 × 6.6 × 2.4 in)1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Maker labels height 168 mm, width 62 mm, depth 60 mm in upright orientation. Use the explicitly labelled metric axes, not an unlabeled tuple or a review that transposes width and depth.

Width73Height184Depth73mm(2.9 × 7.2 × 2.9 in)2Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026Product Dimensions table, Speaker row explicitly labels height 184, width 73, depth 73 mm. Packaging row excluded.

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

430g(15.2 oz)1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Published 0.43 kg speaker mass converts exactly to 430 g. Built-in battery included, packaging, USB cable and optional wireless charging base excluded. Rounded 0.95 lb claim is not converted separately.

620g(1.4 lb)1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

Body materials

Silicone end caps3Maker spec sheet (PDF)assets.sonos.com/media-kits/hardware/roam2/roam2factsheet.pdfRead 8 October 2026Maker fact sheet explicitly describes protective silicone end caps. Other enclosure materials are not named and are not guessed from appearance.

Post-consumer recycled plastic, Recycled polyester fabric3Press releasenews.logitech.com/press-releases/news-details/2024/The-Rugged-Ultimate-Ears-EVERBOOM-Superior-Sound-That-Is-Waterproof-Dustproof-and-Floatable/default.aspxRead 8 October 2026BOOM 4 plastic components minimum 52% PCR by weight. Fabric is 100% PCR polyester. Packaging excluded.

Certifications

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FCC IDs

Not available

Not available

Other certifications

EU Declaration of Conformity (2014/53/EU RED), RoHS II (2011/65/EU and 2015/863/EU)12Maker spec sheet (PDF)sonos.com/pdfs/conformity/roam2.pdfRead 8 October 2026Current maker S27 declaration explicitly covers Roam 2 under RED 2014/53/EU and RoHS 2011/65/EU with the 2015/863/EU amendment. Model-level EU declarations only, not an inferred FCC ID for the selected US sale SKU.

Not available

In the box

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In the box

Sonos Roam 2, USB-C to USB-C charging cable (1.2 m), Quickstart Guide and legal/warranty information1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026Standalone US speaker package: Roam 2, 1.2 m USB-C-to-C cable, setup guide and legal/warranty documents. USB power adapter and wireless charger are not included.

Not available

Links

Not compared

Product page

www.sonos.com/en-us/shop/roam-2-black1Maker product pagesonos.com/en-us/shop/roam-2-blackRead 8 October 2026

www.ultimateears.com/en-us/shop/p/boom-41Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026

Spec sheet

assets.sonos.com/media-kits/hardware/roam2/roam2factsheet.pdf3Maker spec sheet (PDF)assets.sonos.com/media-kits/hardware/roam2/roam2factsheet.pdfRead 8 October 2026Original Sonos Roam 2 single-page maker fact sheet. Its historical Bluetooth 5.0 and abbreviated Wi-Fi list are not copied into current connectivity fields.

support.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-42Maker product pagesupport.logi.com/hc/en-us/articles/17139015760279-Specification-BOOM-4Read 10 October 2026

Manual

www.sonos.com/en-us/guides/roam22Owner's manualsonos.com/en-us/guides/roam2Read 8 October 2026Current exact Sonos Roam 2 product guide and its Roam 2 Specifications block were read. Shared navigation links to other products are not evidence for their specifications.

support.logi.com/hc/en-us/articles/17139015562519-Getting-Started-UE-BOOM-45Owner's manualsupport.logi.com/hc/en-us/articles/17139015562519-Getting-Started-UE-BOOM-4Read 10 October 2026Official getting-started manual explicitly covers BOOM 4 and MEGABOOM 4.

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.

1year11Maker product pagesonos.com/en-us/legal/terms-of-useRead 8 October 2026US terms Section 10(a) manufacturer warranty lasts one year after original purchase. US reference-market warranty only, excluding statutory consumer rights and different regional warranty terms.

2years1Maker product pageultimateears.com/en-us/shop/p/boom-4Read 10 October 2026US page embedded specs and compatibility: 2-Year Limited Hardware Warranty.

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