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Ultimate Ears Boom 4 Review | 130 Data compared

Avg. price in UK: ~£130
Avg. price in US: ~$150
Audio output power: 10.00 W
Battery life: 15 hours
IP rating: IP67
Bluetooth version: 5.0
Weight: 620 g

Ultimate Ears Boom 4 review. Compare 130 technical specifications and user reviews to see how this product ranks in the Portable Speakers category and whether it is worth buying.

7.9

Very good

7.6

Very good

9.0

Exceptional

9.4
Outdoor durability
Score components:
40.0%
10
Water resistance
25.0%
9.7
IP rating
20.0%
9.6
Weight
15.0%
7.0
Battery life
5.5
Powerful sound
Score components:
45.0%
1.9
Audio output power
25.0%
7.0
Battery life
15.0%
9.6
Weight
15.0%
10
Party mode
5.8
Home listening
Score components:
35.0%
?
Multi-room support
30.0%
4.0
Wi-Fi connectivity
20.0%
1.9
Audio output power
15.0%
9.6
Weight

Best prices in UK

Best rankings

#13 in Best small portable speakers
#69 in Best waterproof portable speakers
#70 in Best portable speakers
#304 in Best portable speakers for home

Verdict

The Ultimate Ears Boom 4 is a rugged, cylindrical portable Bluetooth speaker weighing 620 grams and measuring 73 x 184 mm. It delivers balanced 360-degree spatial audio via dual 40mm active drivers and two passive radiators, reaching a maximum sound pressure level of 85 dBC. Key features include a 15-hour battery life with USB-C charging, a 45-meter wireless range, and a customizable app-based EQ. Its main pros are an indestructible IP67 dustproof, waterproof, and floatable build, paired with PartyUp daisy-chaining for over 150 speakers. However, its notable cons include a lack of deep, thumping bass, no multi-device Bluetooth pairing, and the absence of a built-in microphone or voice assistant.

Technical Specifications of portable speaker Ultimate Ears Boom 4

Overall score

7.9

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Popularity

What it is: An indicator based on the number of reviews received by products in the Portable Speakers category.

When it matters: When you prefer products in the Portable Speakers category that have been chosen and reviewed by many other buyers.

Audio

6.4

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Audio output power

What it is: The maximum continuous power the speaker system can deliver.

When it matters: When you need enough output to fill a larger or noisier space.

Importance: HIGH

Good value: >= 20 W

Driver unit size

What it is: The diameter of each main speaker driver.

When it matters: When the size of the main driver influences bass reach and output capability.

Importance: HIGH

Good value: >= 50 mm

Number of drivers

What it is: The total number of speaker drivers built into the unit.

When it matters: When fuller driver arrays and broader sound coverage matter.

Importance: MEDIUM

Good value: >= 2

Frequency response tolerance

What it is: The allowed deviation around the stated frequency response curve.

When it matters: When a flatter and more accurate frequency response matters.

Importance: MEDIUM

Good value: <= 3 dB

?

Lowest frequency

What it is: The lowest audible frequency the speaker can reproduce.

When it matters: When deeper bass extension matters.

Importance: HIGH

Good value: <= 60 Hz

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Connectivity

6.9

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Bluetooth connectivity

What it is: Indicates whether the speaker can receive audio over Bluetooth.

When it matters: When wireless playback from phones, tablets, or computers matters.

Importance: MEDIUM

Good value: yes

Bluetooth version

What it is: The generation of Bluetooth supported by the speaker hardware.

When it matters: When compatibility and efficiency with newer Bluetooth devices matter.

Importance: LOW

Good value: >= 5.0

Maximum Bluetooth range

What it is: The farthest distance at which the Bluetooth link can remain usable.

When it matters: When the source device may be far from the speaker.

Importance: MEDIUM

Good value: >= 10 m

Bluetooth profiles supported

What it is: The Bluetooth operating profiles available for playback, control, or calls.

When it matters: When Bluetooth playback, control, and call compatibility depend on specific profiles.

Importance: LOW

A2DP

Bluetooth LE Audio

What it is: Shows whether the speaker supports the low-energy Bluetooth audio standard.

When it matters: When newer low-power Bluetooth audio features matter.

Importance: LOW

Good value: yes

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Battery

7.9

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Battery life

What it is: The playback time available from one full battery charge.

When it matters: When you need longer playback between charges.

Importance: HIGH

Good value: >= 20 h

Battery capacity

What it is: The amount of electrical charge the internal battery can store.

When it matters: When longer untethered playback or power-bank use needs more stored charge.

Importance: HIGH

Good value: >= 5000 mAh

Charging time

What it is: The time needed to recharge the battery fully.

When it matters: When the speaker needs to be ready again quickly.

Importance: MEDIUM

Good value: <= 4 h

Maximum charging input power

What it is: The maximum charging power the speaker can accept from a compatible power source.

When it matters: When faster charging requires the speaker to accept more input power.

Importance: LOW

Good value: >= 20 W

Built-in rechargeable battery

What it is: Indicates whether the speaker uses a battery that can be recharged.

When it matters: When portable use without disposable batteries or continuous mains power matters.

Importance: LOW

Good value: yes

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Durability

9.7

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IP rating

What it is: The ingress protection code for dust and water resistance.

When it matters: When dust and water protection need to match the intended environment.

Importance: HIGH

Good value: IP67+

Water resistance

What it is: Indicates whether the enclosure can resist water exposure.

When it matters: When the speaker may be used near pools, rain, or splashes.

Importance: MEDIUM

Good value: yes

Dust resistance

What it is: Shows whether the enclosure is protected against dust ingress.

When it matters: When the speaker may be exposed to sand, soil, or dusty environments.

Importance: MEDIUM

Good value: yes

Waterproof depth rating

What it is: The maximum water depth the speaker is rated to withstand.

When it matters: When the speaker may be submerged or used very close to water.

Importance: MEDIUM

Good value: >= 1 m

Drop resistance

What it is: Indicates whether the housing is designed to survive accidental drops.

When it matters: When the speaker may be bumped or suffer an accidental fall during outdoor or travel use.

Importance: LOW

Good value: yes

?

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Controls

9.1

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On-device controls placement

What it is: The physical area of the speaker where its controls are located.

When it matters: When you want controls that are easy to reach in the speaker intended placement.

Importance: LOW

top; front

Touchscreen

What it is: Indicates whether a touch-sensitive screen is integrated.

When it matters: When direct visual control is more convenient than buttons or an app.

Importance: LOW

Good value: yes

Smartphone app control

What it is: Shows whether the speaker can be controlled from a phone app.

When it matters: When remote settings, updates, or sound adjustment from a phone matter.

Importance: LOW

Good value: yes

Remote control

What it is: Indicates whether a dedicated remote control is supplied or supported.

When it matters: When you want to control playback from across the room.

Importance: LOW

Good value: yes

Fast pairing

What it is: Shows whether setup with compatible devices can be completed more quickly.

When it matters: When quick setup with compatible devices matters.

Importance: LOW

Good value: yes

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Design

8.8

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Weight

What it is: The total mass of the portable speaker.

When it matters: When carrying the speaker frequently or packing light matters.

Importance: LOW

Good value: <= 1000 g

Height

What it is: The vertical external dimension of the speaker body.

When it matters: When the speaker must fit beneath shelves or in a compact bag.

Importance: LOW

Good value: <= 20 cm

Width

What it is: The side-to-side external dimension of the speaker body.

When it matters: When the speaker must fit a narrow shelf, bag, or tabletop.

Importance: LOW

Good value: <= 25 cm

Depth

What it is: The front-to-back depth of the speaker housing.

When it matters: When the speaker should take up less front-to-back space.

Importance: LOW

Good value: <= 10 cm

Carry options

What it is: The available ways to carry, hang, or attach the speaker.

When it matters: When a handle, strap, or attachment point changes how you carry the speaker.

Importance: LOW

strap

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Smart features

6.7

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Companion app name

What it is: The official app used to control settings and functions of the speaker.

When it matters: When app compatibility and the available control features depend on the official app.

Importance: LOW

?

Firmware updates

What it is: Indicates whether the speaker can receive firmware revisions after purchase.

When it matters: When post-purchase fixes and feature improvements matter.

Importance: LOW

Good value: yes

Firmware update method

What it is: The path used to install firmware updates on the speaker.

When it matters: When the convenience and reliability of installing updates matters.

Importance: LOW

OTA; App

Voice assistant support

What it is: Indicates whether the speaker can work with supported voice assistants.

When it matters: When hands-free control through a compatible assistant matters.

Importance: LOW

Good value: yes

Spotify Connect

What it is: Shows whether Spotify can stream directly to the speaker over the network.

When it matters: When Spotify should stream directly without keeping phone audio active.

Importance: LOW

Good value: yes

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Ultimate Ears Boom 4 vs the average portable speaker

Why is Ultimate Ears Boom 4 better than the average portable speaker?

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Better ingress protection
Ultimate Ears Boom 4 has better ingress protection than the average portable speaker (IP67 vs IPX5).
What it is: The ingress protection code for dust and water resistance.
When it matters: When dust and water protection need to match the intended environment.
Importance: HIGH
Good value: IP67+
Ultimate Ears Boom 4 has better ingress protection than the average portable speaker (IP67 vs IPX5).IP67 vs IPX5
35 m longer Bluetooth range
Ultimate Ears Boom 4 has a longer Bluetooth range than the average portable speaker (45 m vs 10 m).
Maximum Bluetooth range: 45.00 m.
What it is: The farthest distance at which the Bluetooth link can remain usable.
When it matters: When the source device may be far from the speaker.
Importance: MEDIUM
Good value: >= 10 m
Ultimate Ears Boom 4 has a longer Bluetooth range than the average portable speaker (45 m vs 10 m).45.00 m vs 10 m
11,400 mAh more battery capacity
Ultimate Ears Boom 4 has a larger battery capacity than the average portable speaker (14,000 mAh vs 2,600 mAh).
What it is: The amount of electrical charge the internal battery can store.
When it matters: When longer untethered playback or power-bank use needs more stored charge.
Importance: HIGH
Good value: >= 5000 mAh
Ultimate Ears Boom 4 has a larger battery capacity than the average portable speaker (14,000 mAh vs 2,600 mAh).14000 mAh vs 2600 mAh
1 m deeper waterproof rating
Ultimate Ears Boom 4 has a deeper waterproof depth rating than the average portable speaker (1 m vs 0 m).
What it is: The maximum water depth the speaker is rated to withstand.
When it matters: When the speaker may be submerged or used very close to water.
Importance: MEDIUM
Good value: >= 1 m
Ultimate Ears Boom 4 has a deeper waterproof depth rating than the average portable speaker (1 m vs 0 m).1 m vs 0 m
2 more speaker drivers
Ultimate Ears Boom 4 has more speaker drivers than the average portable speaker (4 vs 2).
Acoustic drivers: 4.
What it is: The total number of speaker drivers built into the unit.
When it matters: When fuller driver arrays and broader sound coverage matter.
Importance: MEDIUM
Good value: >= 2
Ultimate Ears Boom 4 has more speaker drivers than the average portable speaker (4 vs 2).4 vs 2
Provides 360-degree sound
Ultimate Ears Boom 4 provides 360-degree sound, while the average portable speaker does not provide 360-degree sound.
Provides omnidirectional 360° sound radiation.
What it is: Indicates whether sound is spread evenly in all directions.
When it matters: When even sound coverage around the speaker matters.
Importance: MEDIUM
Good value: yes
Ultimate Ears Boom 4 provides 360-degree sound, while the average portable speaker does not provide 360-degree sound.
1 more multipoint connections
Ultimate Ears Boom 4 has more multipoint connections than the average portable speaker (2 vs 1).
Simultaneous Bluetooth devices: 2.
What it is: The number of source devices that can stay connected at the same time.
When it matters: When switching between several connected source devices matters.
Importance: MEDIUM
Good value: >= 2
Ultimate Ears Boom 4 has more multipoint connections than the average portable speaker (2 vs 1).2 vs 1
5 more adjustable EQ bands
Ultimate Ears Boom 4 has more adjustable EQ bands than the average portable speaker (5 vs 0).
5 app eq bands.
What it is: The number of adjustable equalizer frequency bands available in the app.
When it matters: When fine-grained sound adjustment in the companion app matters.
Importance: LOW
Good value: >= 5 bands
Ultimate Ears Boom 4 has more adjustable EQ bands than the average portable speaker (5 vs 0).5 vs 0
2 more speaker drivers
Ultimate Ears Boom 4 has more speaker drivers than the average portable speaker (4 vs 2).
Provides 360-degree sound
Ultimate Ears Boom 4 provides 360-degree sound, while the average portable speaker does not provide 360-degree sound.
Has built-in stereo speakers
Ultimate Ears Boom 4 has built-in stereo speakers, while the average portable speaker does not have built-in stereo speakers.
5 dB higher signal-to-noise ratio
Ultimate Ears Boom 4 has a higher signal-to-noise ratio than the average portable speaker (85 dB vs 80 dB).
34 ms lower audio latency
Ultimate Ears Boom 4 has lower audio latency than the average portable speaker (51 ms vs 85 ms).
35 m longer Bluetooth range
Ultimate Ears Boom 4 has a longer Bluetooth range than the average portable speaker (45 m vs 10 m).
1 more multipoint connections
Ultimate Ears Boom 4 has more multipoint connections than the average portable speaker (2 vs 1).
Has a USB Type-C port
Ultimate Ears Boom 4 has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
11,400 mAh more battery capacity
Ultimate Ears Boom 4 has a larger battery capacity than the average portable speaker (14,000 mAh vs 2,600 mAh).
1 hours shorter charging time
Ultimate Ears Boom 4 has a shorter charging time than the average portable speaker (2 hours vs 3 hours).
3 hours longer battery life
Ultimate Ears Boom 4 has a longer battery life than the average portable speaker (15 hours vs 12 hours).
Better ingress protection
Ultimate Ears Boom 4 has better ingress protection than the average portable speaker (IP67 vs IPX5).
1 m deeper waterproof rating
Ultimate Ears Boom 4 has a deeper waterproof depth rating than the average portable speaker (1 m vs 0 m).
Floats in water
Ultimate Ears Boom 4 floats in water, while the average portable speaker does not float in water.
5 more adjustable EQ bands
Ultimate Ears Boom 4 has more adjustable EQ bands than the average portable speaker (5 vs 0).
4 more EQ presets
Ultimate Ears Boom 4 has more EQ presets than the average portable speaker (4 vs 0).
Has an equalizer
Ultimate Ears Boom 4 has an equalizer, while the average portable speaker does not have an equalizer.
Supports party mode
Ultimate Ears Boom 4 supports party mode, while the average portable speaker does not support party mode.
Supports playback mute
Ultimate Ears Boom 4 supports playback mute, while the average portable speaker does not support playback mute.
Has a programmable button
Ultimate Ears Boom 4 has a programmable button, while the average portable speaker does not have a programmable button.
Has a sleep timer
Ultimate Ears Boom 4 has a sleep timer, while the average portable speaker does not have a sleep timer.
10.8 cm narrower
Ultimate Ears Boom 4 is narrower than the average portable speaker (7.3 cm vs 18.1 cm).
Supports firmware updates
Ultimate Ears Boom 4 supports firmware updates, while the average portable speaker does not support firmware updates.
5 newer
Ultimate Ears Boom 4 was released more recently than the average portable speaker (2024 vs 2019).

Why is Ultimate Ears Boom 4 worse than the average portable speaker?

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7 dB SPL lower maximum sound pressure
Ultimate Ears Boom 4 has a lower maximum sound pressure level than the average portable speaker (85 dB SPL vs 92.00 dB SPL).
Sound pressure level: 85.00 dB.
10 mm smaller main driver
Ultimate Ears Boom 4 has a smaller main driver than the average portable speaker (40 mm vs 50.00 mm).
Primary driver diameter: 40.00 mm.
20 Hz less deep bass extension
Ultimate Ears Boom 4 has less deep bass extension than the average portable speaker (80 Hz vs 60.00 Hz).
Lower frequency-response endpoint: 80.00 Hz.
10 W less audio output power
Ultimate Ears Boom 4 has less audio output power than the average portable speaker (10 W vs 20.00 W).
Total RMS output: 10.00 W.
Does not have a 3.5 mm AUX input
Ultimate Ears Boom 4 does not have a 3.5 mm AUX input, while the average portable speaker has a 3.5 mm AUX input.
No built-in 3.5 mm AUX input.
6 cm taller
Ultimate Ears Boom 4 is taller than the average portable speaker (18.4 cm vs 12.4 cm).
7 dB SPL lower maximum sound pressure
Ultimate Ears Boom 4 has a lower maximum sound pressure level than the average portable speaker (85 dB SPL vs 92.00 dB SPL).
Sound pressure level: 85.00 dB.
What it is: The maximum acoustic loudness the speaker can produce.
When it matters: When the speaker must play loudly in a large or outdoor space.
Importance: HIGH
Good value: >= 90 dB SPL
Ultimate Ears Boom 4 has a lower maximum sound pressure level than the average portable speaker (85 dB SPL vs 92.00 dB SPL).85.00 dB SPL vs 92.00 dB SPL
10 mm smaller main driver
Ultimate Ears Boom 4 has a smaller main driver than the average portable speaker (40 mm vs 50.00 mm).
Primary driver diameter: 40.00 mm.
What it is: The diameter of each main speaker driver.
When it matters: When the size of the main driver influences bass reach and output capability.
Importance: HIGH
Good value: >= 50 mm
Ultimate Ears Boom 4 has a smaller main driver than the average portable speaker (40 mm vs 50.00 mm).40.00 mm vs 50.00 mm
Does not have a 3.5 mm AUX input
Ultimate Ears Boom 4 does not have a 3.5 mm AUX input, while the average portable speaker has a 3.5 mm AUX input.
No built-in 3.5 mm AUX input.
What it is: Indicates whether a standard 3.5 mm analog audio socket is present.
When it matters: When you need a reliable wired analog audio connection.
Importance: LOW
Good value: yes
Ultimate Ears Boom 4 does not have a 3.5 mm AUX input, while the average portable speaker has a 3.5 mm AUX input.
20 Hz less deep bass extension
Ultimate Ears Boom 4 has less deep bass extension than the average portable speaker (80 Hz vs 60.00 Hz).
Lower frequency-response endpoint: 80.00 Hz.
What it is: The lowest audible frequency the speaker can reproduce.
When it matters: When deeper bass extension matters.
Importance: HIGH
Good value: <= 60 Hz
Ultimate Ears Boom 4 has less deep bass extension than the average portable speaker (80 Hz vs 60.00 Hz).80.00 Hz vs 60.00 Hz
10 W less audio output power
Ultimate Ears Boom 4 has less audio output power than the average portable speaker (10 W vs 20.00 W).
Total RMS output: 10.00 W.
What it is: The maximum continuous power the speaker system can deliver.
When it matters: When you need enough output to fill a larger or noisier space.
Importance: HIGH
Good value: >= 20 W
Ultimate Ears Boom 4 has less audio output power than the average portable speaker (10 W vs 20.00 W).10.00 W vs 20.00 W
6 cm taller
Ultimate Ears Boom 4 is taller than the average portable speaker (18.4 cm vs 12.4 cm).
What it is: The vertical external dimension of the speaker body.
When it matters: When the speaker must fit beneath shelves or in a compact bag.
Importance: LOW
Good value: <= 20 cm
Ultimate Ears Boom 4 is taller than the average portable speaker (18.4 cm vs 12.4 cm).18.4 cm vs 12.4 cm

Graphic comparison of Ultimate Ears Boom 4 and other products in the Portable Speakers category

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Third-party reviews

United Kingdom

United States

(Reviews last updated: August 2026)

What customers like about Ultimate Ears Boom 4?

Excellent water and dust resistance with an IP67 rating, meaning it can submerge and float in water
Extremely durable, drop-proof, and rugged build quality suitable for outdoor use
Highly portable, lightweight, and compact cylinder design that fits easily in backpack pockets or cup holders
Clear and balanced 360-degree sound signature, especially well-suited for vocals and mid-range audio
Long-lasting battery life providing up to 15 hours of continuous playtime
Updated with a highly anticipated USB-C charging port
App compatibility allows for customizable graphic EQ settings and multi-speaker pairing via PartyUp

What customers dislike about Ultimate Ears Boom 4?

Bass response is relatively thin and lacks punch or deep rumble compared to competitors
Treble response can feel slightly rolled-off or veiled at times, making some mixes sound flat
Very minimal updates and physical design changes compared to the previous generation Boom 3
Lacks multi-device Bluetooth pairing capabilities to connect with two devices simultaneously
Does not feature a built-in microphone for speakerphone calls
Audio can experience minor distortion or get slightly compressed when pushed to its maximum volume

Expert reviews

digitalreviews.net

13/08/2024

Summary of the review

The Boom 4 Portable Speaker - More than Meets the Eye.

The DigitalReviews Network review highlights the Ultimate Ears BOOM 4 as a durable, eco-friendly speaker featuring a 52% recycled plastic design, robust IP67 water/dustproofing, 15-hour battery life, and a convenient "Magic Button". While praised for its portability and 360-degree sound, the speaker's limitations include average audio quality compared to larger units, weaker performance in stereo, and struggles with binaural audio.

rtings.com

27/09/2024

Summary of the review

Ultimate Ears BOOM 4 Speaker Review - RTINGS.com

The Ultimate Ears BOOM 4 is a highly portable, cylindrical Bluetooth speaker offering excellent 360-degree directivity, over 12 hours of battery life, and USB-C charging, representing only marginal updates over its predecessor. While suitable for music and outdoor use with clear vocals, it struggles with low-end bass, has a rolled-off treble, lacks voice assistant capabilities, and does not support multi-device pairing. Users can adjust the sound signature using the graphic EQ and presets in the companion app.

wired.com

18/10/2024

Summary of the review

Review: Ultimate Ears Boom 4 - WIRED

According to the WIRED review, the Ultimate Ears Boom 4 is a durable, IP67-rated portable speaker featuring an armor-tough, waterproof design capable of withstanding 1.5-meter drops, alongside an expansive 360-degree soundstage and a customizable equalizer app. While praised for its ruggedness and clear high-volume audio, the speaker struggles to produce deep, thumpy bass compared to larger models and offers only incremental performance improvements over its predecessor, despite introducing USB-C charging.

whatsthebest.co.uk

10/01/2025

Summary of the review

Ultimate Ears Boom 4 Portable Bluetooth Speaker Review If you would like, I can compare the key performance changes between this model and the previou...

The Ultimate Ears Boom 4 is a durable, travel-friendly speaker offering rich 360-degree sound, 15-hour battery life, and an IP67 rating for dustproof and waterproof functionality. Key pros include its rugged, lightweight, floatable design and a "magic button" for quick playlist controls, though its cons are limited bass depth, lack of a microphone, and a higher £129.99 price point compared to cheaper alternatives.

trustedreviews.com

02/10/2025

Summary of the review

Ultimate Ears Boom 4 Review If you need any performance metrics compiled or want a direct comparison between the findings of these reviews, let me kno...

The Trusted Reviews analysis finds the Ultimate Ears Boom 4 is a conservative update, remaining practically identical to the Boom 3, with minimal design or internal changes. While maintaining a rugged, IP67-rated waterproof and dustproof design, the speaker introduces a long-awaited USB-C charging port, PartyUp multi-speaker pairing, and the signature oversized volume buttons, despite offering fewer color options than previous generations.

tweaktown.com

16/09/2024

Summary of the review

Ultimate Ears BOOM 4 Portable Bluetooth Speaker Review

The TweakTown review praises the Ultimate Ears BOOM 4 for delivering balanced, punchy, and clean 360-degree sound while offering intuitive controls, a 40-meter wireless range, and a rugged, waterproof design. Pros include long battery life and a robust app, while cons center on the $129.99 MSRP appearing high for the size and a lack of true audiophile-grade audio.

consumerreports.org

N/A

Summary of the review

Ultimate Ears Boom 4 Wireless & Bluetooth Speaker Review If you would like, I can extract the specific pros and cons from these reviews or look up how...

The Ultimate Ears Boom 4 offers acceptable sound quality for its size with a durable, IP67-rated waterproof and dustproof design, featuring a 15-hour battery and flexible Partyup mode. While praised for its portability and volume, the speaker has notable audio limitations—including hazy mids, lack of deep bass, and congested, detailed-lacking treble—along with a lack of a built-in speakerphone.

cravingtech.com

21/08/2024

Summary of the review

Ultimate Ears BOOM 4 Review - Expansive Portable Audio

The Craving Tech review of the Ultimate Ears BOOM 4 highlights its compact, highly portable vertical design, intuitive button layout, and rugged durability as major pros. While the speaker delivers expansive, loud sound, a notable con is its limited ability to produce deep, thumpy bass for certain music genres, which may require app-based EQ adjustments to improve performance.

lesnumeriques.com

17/07/2024

Summary of the review

Ultimate Ears Boom 4 review: an efficient portable speaker

According to the review by Les Numériques, the Ultimate Ears Boom 4 is an efficient, rugged, and IP67-certified Bluetooth speaker that significantly exceeds its official battery rating, offering up to 44 hours of playtime at low volume and 23 hours at 50%. While the speaker boasts well-balanced omnidirectional sound, intuitive controls, and a new USB-C port, its primary drawbacks include minimal acoustic upgrades over previous models and the absence of a hands-free kit.

leclaireur.fnac.com

18/04/2025

Summary of the review

ULTIMATE EARS BOOM 4 Lab Test: Room for Improvement

The Labo Fnac review of the Ultimate Ears Boom 4 concludes that the speaker delivers a mixed, improvable performance, earning a 1 out of 5 stars. While the speaker offers highly reliable battery life (19h 05min), faithful frequency response, and a lightweight 616-gram design, it suffers from a weak acoustic power rating, maxing out at 85 dB, and lacks modern connectivity features such as a jack input or Wi-Fi.

01net.com

12/08/2024

Summary of the review

Ultimate Ears Boom 4 Review: The adventurous speaker that falls short of expectations

According to 01net, the Ultimate Ears Boom 4 remains a durable, IP67-rated, and highly portable speaker, but it falls short due to a lack of technical evolution and underwhelming sound improvements compared to previous generations. While praised for its rugged, floatable design and easy-to-use PartyUp mode, the device suffers from stagnant audio quality that fails to compete with more modern alternatives.

capital.fr

18/09/2024

Summary of the review

UE Boom 4 Review: A safe bet, but does it deliver?

Capital.fr rates the Ultimate Ears Boom 4 as a durable, IP67-rated portable speaker featuring improved USB-C charging, a 15-hour battery, and a reliable, "Magic Button" control system. While praised for its, the review highlights that the speaker lacks significant audio innovation, features limited sound depth and bass for its size, and represents a safe, iterative design rather than a necessary upgrade from previous models.

frandroid.com

24/09/2024

Summary of the review

Ultimate Ears Boom 4 review: Sleeping beauty

The Frandroid review gives the Ultimate Ears Boom 4 a 6/10, characterizing it as a minor update featuring a familiar cylindrical design, new colors, USB-C, and excellent 18-hour battery life. While improvements are noted, the speaker suffers from disappointing audio, including a lack of bass, poor dynamics, and a compressed soundstage, leading to an underwhelming overall experience.

ceotech.it

18/09/2024

Summary of the review

Ultimate Ears BOOM 4: powerful and durable speaker – Review

The Ceotech review highlights the Ultimate Ears Boom 4 as a rugged, IP67-rated portable Bluetooth speaker featuring 52% recycled material, an upgraded USB-C port, and 15-hour battery life with balanced 360-degree sound. Key advantages include its durable, floating design and improved charging, while limitations focus on a lack of significant, revolutionary features compared to the Boom 3, the absence of a USB-C cable in the box, and somewhat weak sub-bass at high volumes.

digitec.ch

28/08/2024

Summary of the review

UE Megaboom 4: Unjustly Overshadowed by the Everboom?

According to a review on Digitec, the Ultimate Ears Megaboom 4 is considered a superior, yet overlooked, speaker offering deeper bass, excellent instrument separation, and high-frequency clarity due to an upgraded diaphragm. While featuring durable IP67 protection, USB-C charging, and custom EQ settings, the device is hindered by limited app streaming integrations and sparse packaging accessories.

consumentenbond.nl

juli 2024

Summary of the review

Ultimate Ears Boom 4 Black - Test, Reviews & Prices

The Consumentenbond review of the 0.618 kg Ultimate Ears Boom 4 (Zwart) praises the portable Bluetooth speaker for being fully waterproof, offering easy smartphone pairing, and featuring a companion app for sound customization. While it allows for charging external devices via USB, notable downsides include the lack of a separate USB wall adapter in the box and a non-replaceable battery that limits long-term repairability.

consumentenbond.nl

juli 2024

Summary of the review

Ultimate Ears Boom 4 red - Test, Reviews & Prices

The Ultimate Ears Boom 4 is a highly portable, medium-sized (0.62 kg) Bluetooth speaker ideal for travel, featuring a robust waterproof design, easy pairing, app-controlled sound adjustments, and the ability to charge smartphones via USB. According to Consumentenbond reviews, key limitations include the lack of a wired auxiliary input, a non-replaceable battery, and the absence of a wall charging adapter in the box.

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