Wireless speakers / Compare

Marshall Willen II vs Tribit StormBox Max

A

Product A: Marshall

Willen II

45 of 96 known

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B

Product B: Tribit

StormBox Max

50 of 96 known

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Every value links to where we found it.

Only differences

AMarshall Willen II

BTribit StormBox Max

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.

StormBox1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026StormBox line. Page and What Hi-Fi name the Max as the larger StormBox speaker.

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.

BTS37, E37-1368N-01, E37-1368N-022Maker product pagetribit.com/products/tribit-stormbox-max-portable-speaker.jsRead 15 October 2026Public store feed lists SKUs E37-1368N-01 (Black) and E37-1368N-02 (White). BTS37 is the hardware model in the manual and the page image names.

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.

September 20265Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 2026Launch announcement coverage on 28 September 2026. The maker's first announcement may be a few days earlier.

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 pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026US store shows both colors in stock on 2026-10-15.2Maker product pagetribit.com/products/tribit-stormbox-max-portable-speaker.jsRead 15 October 2026Both SKUs available. Feed published 2026-09-27.

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

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.

$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.

$129.991Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Regular price $129.99 USD. AndroidGuys launch report also says $129.99 in the US.5Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 2026Says available for about 130 USD.6Press articleandroidguys.com/news/tribit-stormbox-max-60w-portable-power-with-physical-bass-control-for-130Read 15 October 2026Priced at $129.99 in the US.

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.

€119.993Maker product pageeu.tribit.com/products/tribit-stormbox-max-portable-speaker.jsRead 15 October 2026EU store lists E37-1368N-01 (Black) at 119.99 EUR, VAT as published. The same feed lists the White SKU at 124.19, which is not a stated launch price. The page does not name a country.6Press articleandroidguys.com/news/tribit-stormbox-max-60w-portable-power-with-physical-bass-control-for-130Read 15 October 2026Priced at 119.99 EUR in Europe. Country and tax treatment are not named.

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.

US, EU, GB3Maker product pageeu.tribit.com/products/tribit-stormbox-max-portable-speaker.jsRead 15 October 2026The EU store sells both SKUs in euro.6Press articleandroidguys.com/news/tribit-stormbox-max-60w-portable-power-with-physical-bass-control-for-130Read 15 October 2026Available in the US, Europe and the UK (99.99 GBP).

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.

Black, White2Maker product pagetribit.com/products/tribit-stormbox-max-portable-speaker.jsRead 15 October 2026Color options Black and White.

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 pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Maker positions it as a portable speaker with a carrying handle.

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.

Not available

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.

BTribit StormBox Max

Driver type	Count
Neodymium woofer	1
Silk dome tweeter	4

Source1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says Total 60Watt (30W Woofer1+7.5W Tweeter4). Neodymium woofer fires downward. Four silk dome tweeters sit in a 90 degree array. Per-driver power is not stored because the page does not say whether it is continuous, RMS or peak.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say Output Power 60W (1 x 30W woofer + 4 x 7.5W tweeter).5Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 202630W woofer and four 7.5W silk-dome tweeters.

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.

Not available

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.

60W1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Page says Power Output Total 60Watt and 60W Powerful Output. No continuous, RMS or peak basis is stated.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say Output Power 60W. No continuous or peak basis.

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.

53Hz1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says Frequency Response 53Hz-20kHz. No tolerance or mode is stated.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say Frequency Response Range 53~20KHz.

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 pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says 53Hz-20kHz.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say 53~20KHz.

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 pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026App has a custom EQ with 9 bands and plus or minus 6 dB gain control.

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

Not available

91Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Page says 9 Band Frequency. Its 6 preset EQs are not counted.

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.

TRIBIT Signature, Outdoor1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026EQ button switches TRIBIT Signature (light off) and Outdoor (light on). The XBass 2.0 knob is a separate bass control with plus or minus 5 steps of 1.25 dB each. The 6 app presets are not named.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026EQ button toggles TRIBIT Signature and Outdoor EQ.

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

Not available

Yes1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026TWS mode plays left and right channels on two speakers.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026TWS: speaker A is left and speaker B is right.

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

TWS, Auracast1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026TWS for stereo and Auracast. The FAQ says the Max pairs only with the same model.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026TWS and a group mode via two presses of the TWS button. Up to 100+ 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

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

6 of 16 differ

Bluetooth audio playbackiPlays audio streamed over Bluetooth from a phone or other source. Bluetooth used only for setup or app control does not count.

Yes5Reviewtest-aankoop.be/hightech/draadloze-speakers/vergelijker/marshall-willen-ii/461/110300Read 13 October 2026

Yes1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 20265Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 2026

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.

6.01Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says Bluetooth Version 6.0.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say Bluetooth Version V6.0.

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.

AAC, SBC1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says Codec Support AAC, SBC.5Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 2026AAC and SBC. Range up to 45 metres.

Bluetooth profiles

Not available

A2DP, AVRCP, HFP, HSP1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says Protocol A2DP, AVRCP, HFP, HSP.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say A2DP, AVRCP, HFP, HSP.

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

Yes1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Auracast supports 100+ speakers pairing. The page says it connects with devices that adopt the open Auracast standard. Broadcast and receive roles are not stated.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Group mode via double press of the TWS button, 100+ speakers. The product page FAQ names this mode Auracast and says a double press of the TWS button starts it.

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.

Yes4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Pairing section says short-press the Bluetooth button to connect with up to 2 devices.5Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 2026Subheading says the StormBox Max features Bluetooth Multipoint.

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.

24Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Up to 2 devices.

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 pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says up to 150ft (45m).5Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 2026Up to 45 metres.

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

Not available

Not available

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

Not available

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

Not available

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.

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.

BTribit StormBox Max

Connector	Count	Role
3.5 mm audio	1	Audio input
USB-C	1	Charging input, 5 V / 3 A maximum
USB-C	1	Charge output to other devices, 5 V / 1 A maximum

Source1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table lists Type-C charge in and Type-C charge out. The AUX jack is shown in the manual diagram.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Charging diagram labels AUX, Input and Output ports under the cover. Pairing note says a Bluetooth and audio cable connection can be switched with two quick Bluetooth button presses. Charge Other Devices section uses the additional USB-C port when the battery is above 20%.7Reviewtechtest.org/tribit-stormbox-max-im-test-60-w-bluetooth-lautsprecher-mit-beeindruckendem-bassRead 15 October 2026Reviewer says the ports are under a small flap on the back with 2x USB-C and one 3.5 mm input. The flap protects the IP68 rating.

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.

Yes1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says hands-free calls supported. Page says built-in mic.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Controls diagram includes answer, end and reject call.

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

Connected phone voice assistant1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Built-in mic enables voice assistant activation. It runs through the connected phone.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Controls diagram shows a voice assistant function on a 2 second press.

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, Bluetooth pairing, EQ (Signature/Outdoor), TWS/Auracast, Volume up/down, XBass 2.0 bass knob, Play/pause, Next/previous track, Answer/end/reject calls, Activate connected phone voice assistant, Reset1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Controls from the manual control diagram and the page.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Control diagram shows power, Bluetooth, EQ, TWS buttons, volume, play/pause, next, last track, answer, end, reject and voice assistant. Reset is the plus and minus buttons held for 5 seconds. The bass knob has plus or minus 5 steps.

Companion app

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

TRIBIT app1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says TRIBIT APP Support.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026TRIBIT APP section.

App platforms

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

iOS, Android4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026App Store and Google Play badges.

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.

Yes1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026The manual says the app performs firmware upgrades.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Download the TRIBIT app for EQ adjustment, firmware upgrade and shutdown timer settings.

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

8 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.

Yes4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Safety precautions refer to the built-in lithium battery.

Playback time (claimed)iMaximum maker-claimed music playback on one charge in normal playback mode. Battery extension or reduced-bass boost modes belong in battery_life_boost_h. Record volume and lighting conditions in the source note.

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.

20h1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Up to 20H with default EQ at 50% volume. Maker lab data at normal temperature.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say Play Time 20 hours at 50% volume with Default EQ.6Press articleandroidguys.com/news/tribit-stormbox-max-60w-portable-power-with-physical-bass-control-for-130Read 15 October 2026Up to 20 hours at 50% volume with the default EQ.

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.

Lithium4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Safety precautions say the built-in lithium battery must not be thrown into fire. The cell type is not narrowed further.

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.

4h1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026About 4 hours with Type-C 5V/3A charging.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say About 4 hours with 15W input.6Press articleandroidguys.com/news/tribit-stormbox-max-60w-portable-power-with-physical-bass-control-for-130Read 15 October 2026About four hours with 5V/3A input.

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.

5 V DC, 3 A maximum1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says Charge Type Type-C (5V/3A MAX).

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

Not available

15W1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Manual says 15W input gives the maximum charging speed. This equals 5V/3A.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Compliance text says the charger power must be between 2.5 W and 15 W to reach the maximum charging speed.

USB Power Delivery charging

Not available

Not available

Charges other devices

Not available

Yes1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Page has Reverse Charging. Spec table says Charge Out Type-C (5V/1A MAX).4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Another USB-C port charges other devices in an emergency when the speaker is on and the battery is above 20%.6Press articleandroidguys.com/news/tribit-stormbox-max-60w-portable-power-with-physical-bass-control-for-130Read 15 October 2026USB-C port supports 5V/1A charge-out.

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.

IP671Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026IP67 means submersion in 1 m of water for up to 30 minutes.

IP681Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says IP68. IP68 rated, SGS certified under lab conditions. The rubber cover must be sealed.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say Waterproofing Grade IP68.

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.

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

Silicone handle1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Spec table says Portable Carrying Method Silicone Handle.

Measured

None of 6 known

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

Not available

Not available

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

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.

Width109Height203Depth109mm(4.3 × 8 × 4.3 in)1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Page says Product 8.0x4.3x4.3in (203x109x109mm) without axis names. What Hi-Fi labels 20.3 x 10.9 x 10.9 cm as hwd, so height is 203 mm. The manual says 280mm x 109mm x 109mm, which differs on the long axis. It may include the handle. The page and What Hi-Fi figure is stored.5Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 202620.3 x 10.9 x 10.9 cm (hwd), so height 203 mm, width 109 mm, depth 109 mm.7Reviewtechtest.org/tribit-stormbox-max-im-test-60-w-bluetooth-lautsprecher-mit-beeindruckendem-bassRead 15 October 2026Reviewer gives about 203 x 109 x 109 mm and a large carrying loop on top. Axis names are not given.

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.

1,184g(2.6 lb)1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Page says Product 2.61lb (1184g).4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Specifications say Weight 1184g.5Press articlewhathifi.com/speakers/wireless-speakers/tribits-new-bluetooth-speaker-is-designed-to-make-music-sound-bigger-without-sacrificing-portabilityRead 15 October 2026Says 1.2kg, which matches the maker figure of 1184 g.

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.

Fabric exterior, Silicone handle7Reviewtechtest.org/tribit-stormbox-max-im-test-60-w-bluetooth-lautsprecher-mit-beeindruckendem-bassRead 15 October 2026Speaker is wrapped in a linen-like fabric cover.

Certifications

1 of 1 differ

FCC IDs

Not available

Not available

Other certifications

Not available

SGS-certified IP681Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026IP68 SGS certified under lab conditions. No certificate number.

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.

StormBox Max speaker, USB-C charging cable, User manual1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026Speaker, user manual and USB-C charging cable. The manual says a charger is not included.4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Cover says charger not included.

Links

Not compared

Product page

www.marshall.com/us/en/product/willen-ii1Maker product pagemarshall.com/us/en/product/willen-iiRead 13 October 2026

tribit.com/products/tribit-stormbox-max-portable-speaker1Maker product pagetribit.com/products/tribit-stormbox-max-portable-speakerRead 15 October 2026

Spec sheet

Not available

Not available

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.

cdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdf4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026English and multi-language BTS37 user manual, 12 pages. Its text is outlined, so values were read from page images and OCR.

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

0 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.

1year4Owner's manualcdn.shopify.com/s/files/1/0616/1838/9239/files/bts37_user_manual_260708_1.pdfRead 15 October 2026Safety precautions say Warranty Period 12 months. The manual is multi-market, so the market is not named.

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