Wireless speakers / Compare

Bose SoundLink Flex Bluetooth Speaker vs Marshall Emberton II

A

Product A: Bose

SoundLink Flex Bluetooth Speaker

40 of 96 known

Change Bose SoundLink Flex Bluetooth Speaker

Compare the Marshall Emberton II with

Search wireless speakers

B

Product B: Marshall

Emberton II

49 of 96 known

Change Marshall Emberton II

Compare the Bose SoundLink Flex Bluetooth Speaker with

Search wireless speakers

All 96 fields

Every value links to where we found it.

Only differences

ABose SoundLink Flex Bluetooth Speaker

BMarshall Emberton II

General

6 of 8 differ

Series

SoundLink2Maker product pagebose.ca/en/p/bose-soundlink-flex-bluetooth-speaker/SLFLX-SPEAKERWIRELESS-WHTSM-WW.htmlRead 13 October 2026Bose lists the speaker in its SoundLink family of portable Bluetooth speakers. iFixit lists the same family.

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

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

865983-0100, 4359101Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Regulatory section of the owner's guide lists Type designation 435910 for the Bluetooth speaker. SoundGuys lists 865983-0100 for the US Black item.3Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026Review lists Model Number 865983-0100, the US Black item.

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.

GTIN / EAN

Not available

Not available

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

Not available

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.

Status

Not available

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.

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.

Bose SoundLink Flex Portable Speaker (2nd Gen)8Reviewsoundguys.com/bose-soundlink-flex-2nd-gen-review-125253Read 13 October 2026Review calls the SoundLink Flex (2nd Gen) the follow-up to the original SoundLink Flex that came out in 2021. The 2nd Gen has Bluetooth 5.3 and the Bose app.

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.

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

$1493Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026Review lists an original price of 149 USD. T3 and What Hi-Fi also give 149 USD. Tax treatment is not stated.

$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.

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

Not available

€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.

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

US3Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026US price in USD and the US Black model number 865983-0100.

US1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026

ColoursiThe maker's own colour names

Not available

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.

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.

Portable7Spec databaseifixit.com/Device/SoundLink_FlexRead 13 October 2026iFixit describes a portable Bluetooth speaker.

Portable1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026

Audio

10 of 18 differ

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

Not available

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.

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.

ABose SoundLink Flex Bluetooth Speaker

Driver type	Count
Full-range dynamic driver	1

Source6Reviewt3.com/us/reviews/bose-soundlink-flex-reviewRead 13 October 2026Review says the driver array is a single full-range dynamic driver. Bose does not publish its size or power.

BMarshall 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.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

26Reviewt3.com/us/reviews/bose-soundlink-flex-reviewRead 13 October 2026Review says the single driver is supplemented by a couple of racetrack passive radiators, so two.

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

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.

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

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.

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

20kHz1Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026Published frequency range 60-20,000 Hz. 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.

No5Reviewtomsguide.com/audio/bluetooth-speakers/bose-soundlink-flex-reviewRead 13 October 2026Review lists no customizable EQ as a con. T3 also says there is no EQ in the app.

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.

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

Not available

Not available

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

Yes4Reviewwhathifi.com/reviews/bose-soundlink-flexRead 13 October 2026Review says PositionIQ technology uses built-in sensors to detect the speaker's orientation and adjusts the sound to it.

Not available

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

Not available

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.

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

Yes1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Owner's guide (PDF created March 2024) describes Stereo mode with a second compatible speaker: SoundLink Micro, Flex, Color II, Revolve and Revolve+ (Series I and II). It does not work with the 2nd Gen Flex, which uses a different app.

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.

Bose Party Mode, Bose Stereo Mode, Bose SimpleSync1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Party mode and Stereo mode for two Bose Bluetooth speakers, and SimpleSync to link with a Bose Smart Speaker or Soundbar through the Bose app.

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.

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

21Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says pair two Bose Bluetooth speakers for Party mode or Stereo mode. SimpleSync pairs with only one Bose product at a time.

Not available

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

Not available

Not available

Connectivity

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.

Yes3Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026

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

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

4.23Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026Review says Bluetooth 4.2 with the SBC codec only. Bose 2nd Gen coverage also says the original uses Bluetooth 4.2.

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

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

SBC3Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026Review says only the standard SBC codec is supported. This is a reviewer statement and not a maker document.

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.

Bluetooth profiles

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Yes1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says the speaker can be actively connected to two devices at a time and plays audio from one device at a time.

Not available

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

21Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Up to two actively connected devices. Up to eight devices are stored in the pairing list.

Not available

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

9m1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide gives a Bluetooth range of 30 ft or 9 m.

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.

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

Not available

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.

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

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.

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

Not available

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

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.

ABose SoundLink Flex Bluetooth Speaker

Connector	Count	Role
USB-C	1	Charging input

Source1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says charge with the USB-C cable and shows no other connector. SoundGuys confirms there is no aux input.

BMarshall 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.

Controls and software

4 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.

Yes1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide documents answering, ending, declining and muting calls with the built-in microphone.

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.

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.

Connected phone voice assistant1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says the speaker microphone extends the phone's microphone and press and hold of the multi-function button opens the voice assistant on the connected device.

Not available

Controls

Power, Bluetooth pairing, Play/pause, Next/previous track, Volume up/down, Answer/end call, Voice assistant1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide lists Power, Bluetooth, Volume up and down and a multi-function button: press for play/pause and answer/end call, twice for skip forward, three times for skip backward, hold for voice control.

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.

Companion app

Bose Connect1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide names the Bose Connect app for setup, Bluetooth connections and settings. The Bose app is needed for SimpleSync.

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.

App platforms

iOS, Android2Maker product pagebose.ca/en/p/bose-soundlink-flex-bluetooth-speaker/SLFLX-SPEAKERWIRELESS-WHTSM-WW.htmlRead 13 October 2026Page says apps are available on Google Play and the Apple Store.

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.

User firmware updates

Yes1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says the speaker receives security updates through the Bose Connect app and software updates can be run in the app.

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.

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

Yes1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide describes a rechargeable lithium-ion battery that is not to be removed by the user.

Yes1Maker product pagemarshall.com/us/en/product/emberton-iiRead 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.

12h1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says with typical usage the battery lasts up to 12 hours and varies with content and volume.

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.

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-ion1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide regulatory text names a rechargeable lithium-ion battery.

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.

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.

4h1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says allow up to 4 hours to fully charge the battery. No adapter is included.

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.

Quick charge duration

Not available

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

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

Not available

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.

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

5 V DC at 1.5 A1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Regulatory section lists Input Rating 5Vdc, 1.5A.

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

2 of 5 differ

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

IP67, IP641Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says the speaker is rated IP67 and IP64 and can be immersed for up to 30 minutes at a depth of up to 1 m.

IP671Maker product pagemarshall.com/us/en/product/emberton-iiRead 23 October 2026IP67: immersion in 1 m of water for up to 30 minutes.

Floats

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Carry featuresiPublished handles, straps, carabiners or wheels.

Built-in strap1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026Guide says the strap works as a finger loop or attaches to a carabiner or a cord.

Not available

Measured

2 of 6 differ

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

11.98h3Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026Review reports 11 hours 59 minutes, which is 11.98 h, in the standard test: continuous music at a 75 dB (SPL) maximum output level measured 1 m from the front of the speaker. Firmware and codec are not stated.

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.

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

Not available

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.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Dimensions and weight

3 of 3 differ

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

Width201Height90Depth52mm(7.9 × 3.5 × 2 in)4Reviewwhathifi.com/reviews/bose-soundlink-flexRead 13 October 2026Review spec box lists Dimensions (hwd) 9 x 20.1 x 5.2cm, so height 90 mm, width 201 mm, depth 52 mm. Bose's own inch figures 3.56 H x 7.93 W x 2.06 D as reproduced by iFixit agree.

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.

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

589g(1.3 lb)3Reviewsoundguys.com/bose-soundlink-flex-review-63268Read 13 October 2026Review spec box lists 589g. Bose's own spec as reproduced by iFixit is 1.300 lb.

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.

Body materials

Aluminum, Fabric, Nylon, Plastic, Silicone, Steel7Spec databaseifixit.com/Device/SoundLink_FlexRead 13 October 2026Product Material Aluminum, Fabric, Nylon, Plastic, Silicone, Steel, as in Bose's own specification.

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.

Certifications

1 of 1 differ

FCC IDs

Not available

Not available

Other certifications

Not available

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.

In the box

1 of 1 differ

In the box

Speaker, USB Type-C cable2Maker product pagebose.ca/en/p/bose-soundlink-flex-bluetooth-speaker/SLFLX-SPEAKERWIRELESS-WHTSM-WW.htmlRead 13 October 2026What's in the box: Bose SoundLink Flex Bluetooth speaker and USB Type-C cable. SoundGuys says the cable is USB-C to USB-A.

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.

Links

Not compared

Product page

www.bose.ca/en/p/bose-soundlink-flex-bluetooth-speaker/SLFLX-SPEAKERWIRELESS-WHTSM-WW.html2Maker product pagebose.ca/en/p/bose-soundlink-flex-bluetooth-speaker/SLFLX-SPEAKERWIRELESS-WHTSM-WW.htmlRead 13 October 2026Maker's Canadian product page. The page shows the speaker as sold out and the US page has been removed.

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

Spec sheet

Not available

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

Manual

assets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdf1Owner's manualassets.bosecreative.com/m/43ab91c25d0ac95a/original/866666_OG_SLFLX-SPEAKERWIRELESS_enUS.pdfRead 13 October 2026

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.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

None of 1 known

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

Not available

Not available

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