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JBL Boombox 4 Review | 130 Data compared

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  • Avg. price in UK: ~£420
  • Avg. price in US: ~$450
  • Audio output power: ?
  • Battery life: 34 hours
  • IP rating: IP68
  • Bluetooth version: 5.4
  • Weight: 5890 g

JBL Boombox 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.

8.6

Overall score

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 components:

80.0%

8.4

Technical Score

20.0%

9.6

User score

Excellent
8.4

Technical Score

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 components:

32.0%

8.1

Audio

20.0%

9.0

Battery

18.0%

9.6

Durability

16.0%

7.6

Connectivity

8.0%

8.7

Controls

3.0%

4.0

Design

3.0%

6.7

Smart features

Excellent
9.6

User score

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 components:

70.0%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.7
(644)
amazon
4.8
(94)
United States
Amazon_logo.png
4.7
(814)

(Reviews last updated: August 2026)

Exceptional
  • 8.7
    Outdoor durability

    Score components:

    40.0%

    10

    Water resistance

    25.0%

    10

    IP rating

    20.0%

    3.6

    Weight

    15.0%

    10

    Battery life

  • 8.1
    Powerful sound

    Score components:

    45.0%

    ?

    Audio output power

    25.0%

    10

    Battery life

    15.0%

    3.6

    Weight

    15.0%

    10

    Party mode

  • 6.1
    Home listening

    Score components:

    35.0%

    ?

    Multi-room support

    30.0%

    4.0

    Wi-Fi connectivity

    20.0%

    ?

    Audio output power

    15.0%

    3.6

    Weight

  • jbl-boombox-4
jbl-boombox-4

Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The JBL Boombox 4 is a rugged portable Bluetooth 5.4 speaker delivering up to 210W RMS on AC power and 200W RMS on battery mode through two 5-inch woofers, two 0.75-inch tweeters, and three passive radiators. Key advantages include an impressive battery life of up to 28 hours (extendable to 34 hours with Playtime Boost), a swappable battery pack, an IP68 dustproof and waterproof rating, AI Sound Boost technology, and next-gen Auracast multi-speaker pairing. However, it lacks a standard 3.5mm auxiliary input, exhibits noticeable audio compression and overemphasized highs at maximum volume, and is incompatible with older JBL models using the legacy PartyBoost system.

Technical Specifications of portable speaker JBL Boombox 4

Technical Score

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 components:

32.0%

8.1

Audio

20.0%

9.0

Battery

18.0%

9.6

Durability

16.0%

7.6

Connectivity

8.0%

8.7

Controls

3.0%

4.0

Design

3.0%

6.7

Smart features

8.4
JBL Boombox 4 has a technical score of 8.35 points, which is higher than 99.8% of products in this category.
User score

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 components:

70.0%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.7
(644)
amazon
4.8
(94)
United States
Amazon_logo.png
4.7
(814)

(Reviews last updated: August 2026)

9.6
JBL Boombox 4 has a user score of 9.59 points, which is higher than 98.3% of products in this category.
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.
10
JBL Boombox 4 has a popularity of 10 points, which is higher than 66.6% of products in this category.
Ratio quality/price

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 components:

60.0%

8.6

Overall score

40.0%

8.3

Price

8.5
JBL Boombox 4 has a quality-to-price ratio of 8.5 points, which is higher than 95.2% of products in this category.
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

123.00 mm
JBL Boombox 4 has a driver unit size of 123.00 mm which is larger than that of 92.5% of portable speakers.
Primary driver diameter: 123.00 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

4
JBL Boombox 4 has 4 drivers, which is more than 81.7% of portable speakers and equal to the number in 11.9% of portable speakers.
Acoustic drivers: 4.
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

37.00 Hz
JBL Boombox 4 has a lowest frequency of 37.00 Hz which is lower than that of 80% of portable speakers and equal to that of 0.3% of portable speakers.
Lower frequency-response endpoint: 37.00 Hz.
Show more
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

yes
JBL Boombox 4 supports Bluetooth audio. 5.4% of portable speakers offer this feature.
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

5.4
JBL Boombox 4 supports Bluetooth version 5.4 which is newer than that of 96.4% of portable speakers and equal to that of 3.4% of portable speakers.
Bluetooth version: 5.4.
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; AVRCP
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

yes
JBL Boombox 4 supports Bluetooth LE Audio. 97.6% of portable speakers offer this feature.
Supports Bluetooth LE Audio.
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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

34 hours
JBL Boombox 4 has a battery life of 34 hours which is longer than that of 98.8% of portable speakers.
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

4,584 mAh
JBL Boombox 4 has a battery capacity of 4,584 mAh which is larger than that of 77.1% of portable speakers and equal to that of 0.1% of portable speakers.
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

3 hours
JBL Boombox 4 has a charging time of 3 hours which is shorter than that of 35.5% of portable speakers and equal to that of 35.1% of portable speakers.
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

yes
JBL Boombox 4 has a built-in rechargeable battery. 18.7% of portable speakers offer this feature.
Show more
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+

IP68
JBL Boombox 4 has an IP rating of IP68 which provides better ingress protection than 99.3% of portable speakers and the same ingress protection as 0.7% of portable speakers.
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

yes
JBL Boombox 4 is water resistant. 38.3% of portable speakers offer this feature.
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

yes
JBL Boombox 4 is dust resistant. 48.6% of portable speakers offer this feature.
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

1 m
JBL Boombox 4 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
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

yes
JBL Boombox 4 resists accidental impacts. 67.3% of portable speakers offer this feature.
Show more
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
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

no
JBL Boombox 4 does not have a touchscreen. 0.3% of portable speakers offer this feature.
The speaker does not have an integrated touchscreen.
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

yes
JBL Boombox 4 supports smartphone app control. 46.1% of portable speakers offer this feature.
Compatible mobile app provides speaker control or settings.
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

no
JBL Boombox 4 does not include a remote control. 15% of portable speakers offer this feature.
No dedicated remote control is documented.
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

no
JBL Boombox 4 does not support fast pairing. 22.5% of portable speakers offer this feature.
No qualifying fast-pair capability; initial pairing is manual or standard.
Show more
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

5,890 g
JBL Boombox 4 weighs 5,890 g which is heavier than that of 90.6% of portable speakers.
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

50.64 cm
JBL Boombox 4 has a width of 50.64 cm which is wider than that of 98.2% of portable speakers.
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

21.29 cm
JBL Boombox 4 has a depth of 21.29 cm which is deeper than that of 91.5% of portable speakers.
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

handle/shoulder
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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

JBL Portable
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

yes
JBL Boombox 4 supports firmware updates. 52.9% of portable speakers offer this feature.
Supports user-accessible firmware updates.
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

no
JBL Boombox 4 does not support voice assistants. 26.5% of portable speakers offer this feature.
No direct supported voice-assistant control.
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

no
JBL Boombox 4 does not support Spotify Connect. 10.8% of portable speakers offer this feature.
Does not support native Spotify Connect.
Show more

JBL Boombox 4 vs the average portable speaker

  • Better ingress protection
    JBL Boombox 4 has better ingress protection than the average portable speaker (IP68 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+

    JBL Boombox 4 has better ingress protection than the average portable speaker (IP68 vs IPX5).IP68 vs IPX5
  • 22 hours longer battery life
    JBL Boombox 4 has a longer battery life than the average portable speaker (34 hours vs 12 hours).
    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

    JBL Boombox 4 has a longer battery life than the average portable speaker (34 hours vs 12 hours).34 hours vs 12 hours
  • 73 mm larger main driver
    JBL Boombox 4 has a larger main driver than the average portable speaker (123 mm vs 50.00 mm).
    Primary driver diameter: 123.00 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

    JBL Boombox 4 has a larger main driver than the average portable speaker (123 mm vs 50.00 mm).123.00 mm vs 50.00 mm
  • 1 m deeper waterproof rating
    JBL Boombox 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

    JBL Boombox 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
    JBL Boombox 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

    JBL Boombox 4 has more speaker drivers than the average portable speaker (4 vs 2).4 vs 2
  • 1 more multipoint connections
    JBL Boombox 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

    JBL Boombox 4 has more multipoint connections than the average portable speaker (2 vs 1).2 vs 1
  • 7 more adjustable EQ bands
    JBL Boombox 4 has more adjustable EQ bands than the average portable speaker (7 vs 0).
    7 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

    JBL Boombox 4 has more adjustable EQ bands than the average portable speaker (7 vs 0).7 vs 0
  • 9 dB SPL higher maximum sound pressure
    JBL Boombox 4 has a higher maximum sound pressure level than the average portable speaker (101 dB SPL vs 92.00 dB SPL).
    Sound pressure level: 101.00 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

    JBL Boombox 4 has a higher maximum sound pressure level than the average portable speaker (101 dB SPL vs 92.00 dB SPL).101.00 dB SPL vs 92.00 dB SPL
  • 73 mm larger main driver
    JBL Boombox 4 has a larger main driver than the average portable speaker (123 mm vs 50.00 mm).
  • 2 more speaker drivers
    JBL Boombox 4 has more speaker drivers than the average portable speaker (4 vs 2).
  • 9 dB SPL higher maximum sound pressure
    JBL Boombox 4 has a higher maximum sound pressure level than the average portable speaker (101 dB SPL vs 92.00 dB SPL).
  • Has built-in stereo speakers
    JBL Boombox 4 has built-in stereo speakers, while the average portable speaker does not have built-in stereo speakers.
  • 23 Hz deeper bass extension
    JBL Boombox 4 has deeper bass extension than the average portable speaker (37 Hz vs 60.00 Hz).
  • 1 more multipoint connections
    JBL Boombox 4 has more multipoint connections than the average portable speaker (2 vs 1).
  • Supports Auracast
    JBL Boombox 4 supports Auracast, while the average portable speaker does not support Auracast.
  • Supports Bluetooth LE Audio
    JBL Boombox 4 supports Bluetooth LE Audio, while the average portable speaker does not support Bluetooth LE Audio.
  • 0.4 Bluetooth levels newer
    JBL Boombox 4 has a newer Bluetooth version than the average portable speaker (5.4 vs 5.0).
  • Has a USB Type-C port
    JBL Boombox 4 has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
  • Supports AAC Bluetooth audio
    JBL Boombox 4 supports AAC Bluetooth audio, while the average portable speaker does not support AAC Bluetooth audio.
  • 22 hours longer battery life
    JBL Boombox 4 has a longer battery life than the average portable speaker (34 hours vs 12 hours).
  • 1,984 mAh more battery capacity
    JBL Boombox 4 has a larger battery capacity than the average portable speaker (4,584 mAh vs 2,600 mAh).
  • Has a power bank function
    JBL Boombox 4 has a power bank function, while the average portable speaker does not have a power bank function.
  • Has a removable battery
    JBL Boombox 4 has a removable battery, while the average portable speaker does not have a removable battery.
  • Includes a power adapter
    JBL Boombox 4 includes a power adapter, while the average portable speaker does not include a power adapter.
  • Better ingress protection
    JBL Boombox 4 has better ingress protection than the average portable speaker (IP68 vs IPX5).
  • 1 m deeper waterproof rating
    JBL Boombox 4 has a deeper waterproof depth rating than the average portable speaker (1 m vs 0 m).
  • Resists accidental impacts
    JBL Boombox 4 resists accidental impacts, while the average portable speaker lacks an impact-resistance rating.
  • Floats in water
    JBL Boombox 4 floats in water, while the average portable speaker does not float in water.
  • 5 °C higher maximum operating temperature
    JBL Boombox 4 has a higher maximum operating temperature than the average portable speaker (45 °C vs 40 °C).
  • Is UV resistant
    JBL Boombox 4 is UV resistant, while the average portable speaker is not rated as UV resistant.
  • 7 more adjustable EQ bands
    JBL Boombox 4 has more adjustable EQ bands than the average portable speaker (7 vs 0).
  • 4 more EQ presets
    JBL Boombox 4 has more EQ presets than the average portable speaker (4 vs 0).
  • Has an equalizer
    JBL Boombox 4 has an equalizer, while the average portable speaker does not have an equalizer.
  • Supports party mode
    JBL Boombox 4 supports party mode, while the average portable speaker does not support party mode.
  • Supports firmware updates
    JBL Boombox 4 supports firmware updates, while the average portable speaker does not support firmware updates.
  • 6 newer
    JBL Boombox 4 was released more recently than the average portable speaker (2025 vs 2019).

Total
Overall
Audio
Connectivity
Battery
Durability
Controls
Smart features
  • 1 fewer microphones
    JBL Boombox 4 has fewer microphones than the average portable speaker (0 vs 1).
    Built-in microphones: 0.
  • 58 ms higher audio latency
    JBL Boombox 4 has higher audio latency than the average portable speaker (143 ms vs 85 ms).
    Audio latency: 143 ms.
  • Does not have a 3.5 mm AUX input
    JBL Boombox 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.
  • 5,090 g heavier
    JBL Boombox 4 is heavier than the average portable speaker (5,890 g vs 800 g).
  • 32.54 cm wider
    JBL Boombox 4 is wider than the average portable speaker (50.6 cm vs 18.1 cm).
  • 12.99 cm deeper
    JBL Boombox 4 is deeper than the average portable speaker (21.3 cm vs 8.3 cm).
  • 1 fewer microphones
    JBL Boombox 4 has fewer microphones than the average portable speaker (0 vs 1).
    Built-in microphones: 0.
    What it is: The number of microphones built into the speaker.
    When it matters: When voice pickup, calls, or beamforming performance matter.

    Importance: LOW

    Good value: >= 1

    JBL Boombox 4 has fewer microphones than the average portable speaker (0 vs 1).0 vs 1
  • 5,090 g heavier
    JBL Boombox 4 is heavier than the average portable speaker (5,890 g vs 800 g).
    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

    JBL Boombox 4 is heavier than the average portable speaker (5,890 g vs 800 g).5890 g vs 800 g
  • Does not have a 3.5 mm AUX input
    JBL Boombox 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

    JBL Boombox 4 does not have a 3.5 mm AUX input, while the average portable speaker has a 3.5 mm AUX input.
  • 58 ms higher audio latency
    JBL Boombox 4 has higher audio latency than the average portable speaker (143 ms vs 85 ms).
    Audio latency: 143 ms.
    What it is: The delay between the source signal and the sound you hear.
    When it matters: When lip sync, gaming, or real-time monitoring matters.

    Importance: LOW

    Good value: <= 100 ms

    JBL Boombox 4 has higher audio latency than the average portable speaker (143 ms vs 85 ms).143 ms vs 85 ms
  • 32.54 cm wider
    JBL Boombox 4 is wider than the average portable speaker (50.6 cm vs 18.1 cm).
    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

    JBL Boombox 4 is wider than the average portable speaker (50.6 cm vs 18.1 cm).50.64 cm vs 18.1 cm
  • 12.99 cm deeper
    JBL Boombox 4 is deeper than the average portable speaker (21.3 cm vs 8.3 cm).
    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

    JBL Boombox 4 is deeper than the average portable speaker (21.3 cm vs 8.3 cm).21.29 cm vs 8.3 cm
  • 4.67x more expensive
    JBL Boombox 4 is more expensive than the average portable speaker (£420 vs £90).
    JBL Boombox 4 is more expensive than the average portable speaker (£420 vs £90).£420 vs £90
Total
Overall
Audio
Connectivity
Design

Graphic comparison of JBL Boombox 4 and other products in the Portable Speakers category

Attribute category
Attribute
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Third-party reviews

United Kingdom
amazon
4.7
644 Reviews
amazon
4.8
94 Reviews
United States
Amazon_logo.png
4.7
814 Reviews

(Reviews last updated: August 2026)

What customers like about JBL Boombox 4?

  • Powerful JBL Pro Sound with massive volume and impactful, thumping bass
  • Long battery life offering up to 28-34 hours of playback
  • User-replaceable and swappable battery pack design
  • Lighter body than its predecessor, shaving off about two pounds
  • Upgraded IP68 dustproof and waterproof durability rating
  • Equipped with modern Bluetooth 5.4 and Auracast multi-speaker connectivity
  • Includes a customizable 7-band graphic EQ via the JBL Portable app
  • Supports digital audio transmission and lossless playback over USB-C

What customers dislike about JBL Boombox 4?

  • High premium retail price tag
  • Lacks a standard 3.5mm auxiliary audio input jack
  • Audio dynamics suffer with noticeable compression and recessed bass at maximum volume
  • Treble can become harsh or piercing at extreme volume levels
  • Lacks built-in shoulder strap attachment points on the body
  • Some users dislike the aesthetic shift from a metal handle to a plastic one
  • Underwhelming mid-range detail and sub-par sound directivity

Expert reviews

R
rtings.com
23/10/2025
Summary of the review
JBL Boombox 4 Speaker Review - RTINGS.com
L
lbtechreviews.com
03/10/2025
Summary of the review
JBL Boombox 4 – Tech Reviews LBTechreviews
S
soundguys.com
06/12/2025
Summary of the review
JBL Boombox 4 review: Lighter, louder, and better than the ...
H
hifi.de
06/02/2026
Summary of the review
JBL Boombox 4 review: New test winner, but still...
(Translated)Show original
P
pcwelt.de
24/02/2026
Summary of the review
JBL Boombox 4 Review: Bluetooth Speaker with Full Power
(Translated)Show original
K
kopfhoerer.de
14/11/2025
Summary of the review
JBL Boombox 4 Review - kopfhoerer.de
(Translated)Show original
F
frandroid.com
07/11/2025
Summary of the review
JBL Boombox 4 Review: The Best Boombox Yet
(Translated)Show original
L
lesnumeriques.com
29/10/2025
Summary of the review
JBL Boombox 4 Review: More than just a bass speaker, a rich and controlled XXL sound
(Translated)Show original
L
lesnumeriques.com
29/10/2025
Summary of the review
JBL Boombox 4: Best price - Les Numériques
(Translated)Show original
P
pisapapeles.net
11 de noviembre de 2025
Summary of the review
JBL Boombox 4 Review - Pisapapeles
(Translated)Show original
G
gamereactor.es
15 de noviembre de 2025
Summary of the review
JBL Boombox 4 Review - Gamereactor
(Translated)Show original
E
expert.nl
05/01/2026
Summary of the review
JBL Boombox 4 Review - Expert Evaluation
(Translated)Show original

Video reviews

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