Scored using Portable Speakers Methodology v1.0
Portable Speakers Methodology v1.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Portable Speakers Methodology v1.0: technical specifications plus authentic consumer ratings, with 0% commercial bias.
Explore Portable Speakers Methodology v1.0

Ultimate Ears Boom 4 Review | 130 Data compared

Avg. price:~£130Audio output power:10.00 WBattery life:15 hoursIP rating:IP67Bluetooth version:5.0Weight: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.

Ultimate Ears Boom 4
7.7/10

Overall score

Score
7.7/ 10
✕
What it is
An overall evaluation of products in the Portable Speakers category, based on technical analysis and user reviews.
When it matters
When you need a quick reference for identifying the best products in the Portable Speakers category.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

80%

7.5

Technical score

20%

8.5

User score

★Better than 95% of portable speakers
8.4

Value for money

Value for money
8.4/ 10
✕
What it is
An indicator that combines the overall score of products in the Portable Speakers category with their prices.
When it matters
When you are comparing products in the Portable Speakers category and want a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

70%

7.7

Overall score

30%

9.8

Price

★Better than 96%
7.5

Technical score

Technical score
7.5/ 10
✕
What it is
An assessment of technical performance for products in the Portable Speakers category across these key areas: Audio, Connectivity, Battery, Durability, Controls, Design, Smart features.
When it matters
When you want to compare products in the Portable Speakers category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

32%

6.2

Audio

20%

7.9

Battery

18%

9.5

Durability

16%

6.8

Connectivity

8%

9.0

Controls

3%

8.8

Design

3%

6.4

Smart features

★Better than 94%
8.5

User score

User score
8.5/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Portable Speakers category.
When it matters
When you want to know how products in the Portable Speakers category perform in everyday use and how reliable owners find them over time.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

70%

8.6

User ratings

30%

8.4

Number of reviews

Based on ratings from across the web.
â–²Better than 78%
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Where to buy
*As an Amazon Associate, we earn from qualifying purchases.
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of portable speaker Ultimate Ears Boom 4

Technical score
Technical score
7.5/ 10
✕
What it is
An assessment of technical performance for products in the Portable Speakers category across these key areas: Audio, Connectivity, Battery, Durability, Controls, Design, Smart features.
When it matters
When you want to compare products in the Portable Speakers category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
Score components:

32%

6.2

Audio

20%

7.9

Battery

18%

9.5

Durability

16%

6.8

Connectivity

8%

9.0

Controls

3%

8.8

Design

3%

6.4

Smart features

7.5
User score
User score
8.5/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Portable Speakers category.
When it matters
When you want to know how products in the Portable Speakers category perform in everyday use and how reliable owners find them over time.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

70%

8.6

User ratings

30%

8.4

Number of reviews

Based on ratings from across the web.
8.5
Popularity
Popularity
8.4/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
Popularity:
Ultimate Ears Boom 4 has a popularity score of 8.4 points, which is higher than 81.8% of products in this category.
8.4
Value for money
Value for money
8.4/ 10
✕
What it is
An indicator that combines the overall score of products in the Portable Speakers category with their prices.
When it matters
When you are comparing products in the Portable Speakers category and want a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
Score components:

70%

7.7

Overall score

30%

9.8

Price

8.4
Audio output power
10 W
This portable speaker has an audio output power of 10 W which is lower than that of 66.1% of portable speakers and equal to that of 7.3% of portable speakers.
Driver unit size
40 mm
This portable speaker has a driver unit size of 40 mm which is smaller than that of 76.3% of portable speakers and equal to that of 13.2% of portable speakers.
Number of drivers
4
This portable speaker has 4 drivers, which is more than 81.7% of portable speakers and equal to the number in 11.9% of portable speakers.
Frequency response tolerance
?
Lowest frequency
80 Hz
This portable speaker has a lowest frequency of 80 Hz which is higher than that of 68.5% of portable speakers and equal to that of 9.4% of portable speakers.
Show more
Bluetooth connectivity
yes
This portable speaker supports Bluetooth audio. 5.4% of portable speakers offer this feature.
Bluetooth version
5
This portable speaker supports Bluetooth version 5 which is newer than that of 46.3% of portable speakers and equal to that of 24.4% of portable speakers.
Maximum Bluetooth range
45 m
This portable speaker has a maximum Bluetooth range of 45 m which is longer than that of 96.7% of portable speakers and equal to that of 0.9% of portable speakers.
Bluetooth profiles supported
A2DP
Bluetooth LE Audio
no
This portable speaker does not support Bluetooth LE Audio. 2.5% of portable speakers offer this feature.
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Battery life
15 hours
This portable speaker has a battery life of 15 hours which is longer than that of 67% of portable speakers and equal to that of 6.5% of portable speakers.
Battery capacity
14,000 mAh
This portable speaker has a battery capacity of 14,000 mAh which is larger than that of 98.9% of portable speakers.
Charging time
2 hours
This portable speaker has a charging time of 2 hours which is shorter than that of 72.9% of portable speakers and equal to that of 22.6% of portable speakers.
Maximum charging input power
10 W
This portable speaker has a maximum charging input power of 10 W which is higher than that of 44.3% of portable speakers and equal to that of 26.1% of portable speakers.
Built-in rechargeable battery
yes
This portable speaker has a built-in rechargeable battery. 18.7% of portable speakers offer this feature.
Show more
IP rating
IP67
This portable speaker has an IP rating of IP67 which provides better ingress protection than 80% of portable speakers and the same ingress protection as 19.1% of portable speakers.
Water resistance
yes
This portable speaker is water resistant. 38.3% of portable speakers offer this feature.
Dust resistance
yes
This portable speaker is dust resistant. 48.6% of portable speakers offer this feature.
Waterproof depth rating
1 m
This portable speaker has a waterproof depth rating of 1 m which is deeper than that of 52.6% of portable speakers and equal to that of 47.4% of portable speakers.
Drop resistance
?
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On-device controls placement
top; front
Touchscreen
no
This portable speaker does not have a touchscreen. 0.3% of portable speakers offer this feature.
Smartphone app control
yes
This portable speaker supports smartphone app control. 46.1% of portable speakers offer this feature.
Compatible mobile app provides speaker control or settings.
Remote control
no
This portable speaker does not include a remote control. 15% of portable speakers offer this feature.
Fast pairing
no
This portable speaker does not support fast pairing. 22.5% of portable speakers offer this feature.
Show more
Weight
620 g
This portable speaker weighs 620 g which is lighter than that of 57.7% of portable speakers and equal to that of 0.2% of portable speakers.
Height
18.4 cm
This portable speaker has a height of 18.4 cm which is taller than that of 70.7% of portable speakers and equal to that of 0.3% of portable speakers.
Width
7.3 cm
This portable speaker has a width of 7.3 cm which is narrower than that of 91.7% of portable speakers and equal to that of 0.7% of portable speakers.
Depth
7.3 cm
This portable speaker has a depth of 7.3 cm which is shallower than that of 60.4% of portable speakers and equal to that of 0.5% of portable speakers.
Carry options
strap
Show more
Companion app name
?
Firmware updates
yes
This portable speaker supports firmware updates. 52.9% of portable speakers offer this feature.
Supports user-accessible firmware updates.
Firmware update method
OTA; App
Voice assistant support
no
This portable speaker does not support voice assistants. 26.5% of portable speakers offer this feature.
Spotify Connect
no
This portable speaker does not support Spotify Connect. 10.8% of portable speakers offer this feature.
Show more

Ultimate Ears Boom 4 vs the average portable speaker

246810TotalAudioConnectivityBatteryDurabilityControlsDesignSmart features
  • Better ingress protection
    This portable speaker has better ingress protection than the average portable speaker (IP67 vs IPX5).
    IP67 vs IPX5
  • 35 m longer Bluetooth range
    This portable speaker has a longer Bluetooth range than the average portable speaker (45 m vs 10 m).
    45 m vs 10 m
  • 11,400 mAh more battery capacity
    This portable speaker has a larger battery capacity than the average portable speaker (14,000 mAh vs 2,600 mAh).
    14,000 mAh vs 2,600 mAh
  • 1 m deeper waterproof rating
    This portable speaker 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
    This portable speaker has more speaker drivers than the average portable speaker (4 vs 2).
    4 vs 2
  • Provides 360-degree sound
    This portable speaker provides 360-degree sound, while the average portable speaker does not provide 360-degree sound.
    Provides omnidirectional 360° sound radiation.
  • 1 more multipoint connections
    This portable speaker has more multipoint connections than the average portable speaker (2 vs 1).
    2 vs 1
  • 5 more adjustable EQ bands
    This portable speaker has more adjustable EQ bands than the average portable speaker (5 vs 0).
    5 vs 0
  • 10.8% better value for money
    Ultimate Ears Boom 4 offers better value for money than the average portable speaker (8.36 vs 7.5).
    8.36 vs 7.55
  • 6.6% higher user score
    User score
    8.5/ 10
    ✕
    What it is
    A rating that combines user reviews with the total review volume for products in the Portable Speakers category.
    When it matters
    When you want to know how products in the Portable Speakers category perform in everyday use and how reliable owners find them over time.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Ultimate Ears Boom 4
    the average portable speaker
    Ultimate Ears Boom 4 has a higher user score than the average portable speaker (8.53 vs 8).
    8.53 vs 8
  • 99.7% more popular
    Ultimate Ears Boom 4 is more popular than the average portable speaker (8.41 vs 4.21).
    8.41 vs 4.21
  • 2 more speaker drivers
    This portable speaker has more speaker drivers than the average portable speaker (4 vs 2).
    4 vs 2
  • Provides 360-degree sound
    This portable speaker provides 360-degree sound, while the average portable speaker does not provide 360-degree sound.
    Provides omnidirectional 360° sound radiation.
  • Has built-in stereo speakers
    This portable speaker has built-in stereo speakers, while the average portable speaker does not have built-in stereo speakers.
    Provides true stereo output within the unit.
  • 5 dB higher signal-to-noise ratio
    This portable speaker has a higher signal-to-noise ratio than the average portable speaker (85 dB vs 80 dB).
    85 dB vs 80 dB
  • 34 ms lower audio latency
    This portable speaker has lower audio latency than the average portable speaker (51 ms vs 85 ms).
    51 ms vs 85 ms
  • 35 m longer Bluetooth range
    This portable speaker has a longer Bluetooth range than the average portable speaker (45 m vs 10 m).
    45 m vs 10 m
  • 1 more multipoint connections
    This portable speaker has more multipoint connections than the average portable speaker (2 vs 1).
    2 vs 1
  • Has a USB Type-C port
    This portable speaker has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
    Has a physical USB-C port.
  • 11,400 mAh more battery capacity
    This portable speaker has a larger battery capacity than the average portable speaker (14,000 mAh vs 2,600 mAh).
    14,000 mAh vs 2,600 mAh
  • 1 hours shorter charging time
    This portable speaker has a shorter charging time than the average portable speaker (2 hours vs 3 hours).
    2 hours vs 3 hours
  • 3 hours longer battery life
    This portable speaker has a longer battery life than the average portable speaker (15 hours vs 12 hours).
    15 hours vs 12 hours
  • Better ingress protection
    This portable speaker has better ingress protection than the average portable speaker (IP67 vs IPX5).
    IP67 vs IPX5
  • 1 m deeper waterproof rating
    This portable speaker has a deeper waterproof depth rating than the average portable speaker (1 m vs 0 m).
    1 m vs 0 m
  • Floats in water
    This portable speaker floats in water, while the average portable speaker does not float in water.
  • 5 more adjustable EQ bands
    This portable speaker has more adjustable EQ bands than the average portable speaker (5 vs 0).
    5 vs 0
  • 4 more EQ presets
    This portable speaker has more EQ presets than the average portable speaker (4 vs 0).
    4 vs 0
  • Has an equalizer
    This portable speaker has an equalizer, while the average portable speaker does not have an equalizer.
    Offers user-selectable EQ, tone adjustment, or sound presets.
  • Supports party mode
    This portable speaker supports party mode, while the average portable speaker does not support party mode.
    Supports synchronized multi-speaker party/group playback.
  • Supports playback mute
    This portable speaker supports playback mute, while the average portable speaker does not support playback mute.
    Speaker playback audio can be directly muted.
  • Has a programmable button
    This portable speaker has a programmable button, while the average portable speaker does not have a programmable button.
    Has a user-programmable physical button.
  • Has a sleep timer
    This portable speaker has a sleep timer, while the average portable speaker does not have a sleep timer.
    A selectable timer can stop playback or power the speaker down.
  • 10.8 cm narrower
    This portable speaker is narrower than the average portable speaker (7.3 cm vs 18.1 cm).
    7.3 cm vs 18.1 cm
  • Supports firmware updates
    This portable speaker supports firmware updates, while the average portable speaker does not support firmware updates.
    Supports user-accessible firmware updates.
  • 5 newer
    This portable speaker was released more recently than the average portable speaker (2024 vs 2019).
    2024 vs 2019
  • 7 dB SPL lower maximum sound pressure
    This portable speaker has a lower maximum sound pressure level than the average portable speaker (85 dB SPL vs 92 dB SPL).
    85 dB SPL vs 92 dB SPL
  • 10 mm smaller main driver
    This portable speaker has a smaller main driver than the average portable speaker (40 mm vs 50 mm).
    40 mm vs 50 mm
  • Does not have a 3.5 mm AUX input
    This portable speaker 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.
  • 20 Hz less deep bass extension
    This portable speaker has less deep bass extension than the average portable speaker (80 Hz vs 60 Hz).
    80 Hz vs 60 Hz
  • 10 W less audio output power
    This portable speaker has less audio output power than the average portable speaker (10 W vs 20 W).
    10 W vs 20 W
  • 6 cm taller
    This portable speaker is taller than the average portable speaker (18.4 cm vs 12.4 cm).
    18.4 cm vs 12.4 cm
  • 7 dB SPL lower maximum sound pressure
    This portable speaker has a lower maximum sound pressure level than the average portable speaker (85 dB SPL vs 92 dB SPL).
    85 dB SPL vs 92 dB SPL
  • 10 mm smaller main driver
    This portable speaker has a smaller main driver than the average portable speaker (40 mm vs 50 mm).
    40 mm vs 50 mm
  • 20 Hz less deep bass extension
    This portable speaker has less deep bass extension than the average portable speaker (80 Hz vs 60 Hz).
    80 Hz vs 60 Hz
  • 10 W less audio output power
    This portable speaker has less audio output power than the average portable speaker (10 W vs 20 W).
    10 W vs 20 W
  • Does not have a 3.5 mm AUX input
    This portable speaker 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
    This portable speaker is taller than the average portable speaker (18.4 cm vs 12.4 cm).
    18.4 cm vs 12.4 cm

Video reviews

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Expert reviews

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digitalreviews.net
13/08/2024
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rtings.com
27/09/2024
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wired.com
18/10/2024
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whatsthebest.co.uk
10/01/2025
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trustedreviews.com
02/10/2025
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tweaktown.com
16/09/2024
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consumerreports.org
N/A
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cravingtech.com
21/08/2024
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lesnumeriques.com
17/07/2024
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18/04/2025
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12/08/2024
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capital.fr
18/09/2024
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24/09/2024
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18/09/2024
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28/08/2024
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01/07/2024
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01/07/2024
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Third-party reviews

Based on ratings from across the web.
Reviews last updated: August 2026 · How we calculate this

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 don't like 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

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.

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