OVERALL
SPECS
VS AVERAGE
REVIEWS
ALTERNATIVES

Energy Sistem Urban Box Supernova Review | 130 Data compared

double-arrow
  • Avg. price: ~£25
  • Audio output power: 16.00 W
  • Battery life: 12 hours
  • IP rating: IPX4
  • Bluetooth version: 5.1
  • Weight: 512 g

Energy Sistem Urban Box Supernova 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.

6.7

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%

6.5

Technical Score

20.0%

7.3

User score

Good
6.5

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%

6.5

Audio

20.0%

5.9

Battery

18.0%

7.0

Durability

16.0%

6.7

Connectivity

8.0%

6.5

Controls

3.0%

9.0

Design

3.0%

5.1

Smart features

Good
7.3

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%

8.3

User reviews

30.0%

5.1

Popularity

User score:
United Kingdom
amazon
4.1
(29)
amazon
4.2
(12)

(Reviews last updated: August 2026)

Very good
  • 7.9
    Outdoor durability

    Score components:

    40.0%

    10

    Water resistance

    25.0%

    4.9

    IP rating

    20.0%

    9.7

    Weight

    15.0%

    5.2

    Battery life

  • 4.5
    Powerful sound

    Score components:

    45.0%

    2.6

    Audio output power

    25.0%

    5.2

    Battery life

    15.0%

    9.7

    Weight

    15.0%

    4.0

    Party mode

  • 4.6
    Home listening

    Score components:

    35.0%

    4.0

    Multi-room support

    30.0%

    4.0

    Wi-Fi connectivity

    20.0%

    2.6

    Audio output power

    15.0%

    9.7

    Weight

  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
  • energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova
energy-sistem-urban-box-supernova

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 Energy Sistem Urban Box Supernova is a 16W stereo 2.0 portable wireless speaker featuring dual 40mm full-range drivers and a double membrane passive radiator for bass amplification. Key advantages include its flexible audio sources supporting Bluetooth 5.1, True Wireless Stereo pairing, a 3.5mm auxiliary input, and MP3/WAV playback via USB or microSD cards up to 64GB, all encased in an IPX4 splash-proof fabric with customizable RGB LED lighting and a 2000 mAh battery offering up to 7 to 12 hours of playback. However, its downsides include an overall volume output that remains relatively low for outdoor parties, lack of customizable individual solid colors for the RGB lighting modes, and noticeably weak bass depth compared to other speakers in its class.

Technical Specifications of portable speaker Energy Sistem Urban Box Supernova

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%

6.5

Audio

20.0%

5.9

Battery

18.0%

7.0

Durability

16.0%

6.7

Connectivity

8.0%

6.5

Controls

3.0%

9.0

Design

3.0%

5.1

Smart features

6.5
Energy Sistem Urban Box Supernova has a technical score of 6.53 points, which is lower than 66.5% 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%

8.3

User reviews

30.0%

5.1

Popularity

User score:
United Kingdom
amazon
4.1
(29)
amazon
4.2
(12)

(Reviews last updated: August 2026)

7.3
Energy Sistem Urban Box Supernova has a user score of 7.3 points, which is lower than 87.9% 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.
5.1
Energy Sistem Urban Box Supernova has a popularity of 5.1 points, which is higher than 54.3% 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%

6.7

Overall score

40.0%

10

Price

7.7
Energy Sistem Urban Box Supernova has a quality-to-price ratio of 7.7 points, which is higher than 40.7% 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

16.00 W
Energy Sistem Urban Box Supernova has an audio output power of 16.00 W which is lower than that of 54.7% of portable speakers and equal to that of 3.6% of portable speakers.
Total RMS output: 16.00 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

40.00 mm
Energy Sistem Urban Box Supernova has a driver unit size of 40.00 mm which is smaller than that of 76.3% of portable speakers and equal to that of 13.2% of portable speakers.
Primary driver diameter: 40.00 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

?
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

?
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
Energy Sistem Urban Box Supernova 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

5.1
Energy Sistem Urban Box Supernova supports Bluetooth version 5.1 which is newer than that of 70.8% of portable speakers and equal to that of 4.8% of portable speakers.
Bluetooth version: 5.1.
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; HFP; HSP
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

no
Energy Sistem Urban Box Supernova does not support Bluetooth LE Audio. 2.5% of portable speakers offer this feature.
Show more
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

12 hours
Energy Sistem Urban Box Supernova has a battery life of 12 hours which is longer than that of 47.8% of portable speakers and equal to that of 15.7% 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

2000 mAh
Energy Sistem Urban Box Supernova has a battery capacity of 2000 mAh which is smaller than that of 64.9% of portable speakers and equal to that of 7.3% 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

2 hours
Energy Sistem Urban Box Supernova 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
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

10 W
Energy Sistem Urban Box Supernova 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
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
Energy Sistem Urban Box Supernova 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+

IPX4
Energy Sistem Urban Box Supernova has an IP rating of IPX4 which provides worse ingress protection than 77.7% of portable speakers and the same ingress protection as 21% 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
Energy Sistem Urban Box Supernova 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

?
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

0 m
Energy Sistem Urban Box Supernova is not rated for underwater use. 47.6% of cameras have a native waterproof depth rating.
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

?
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

?
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

no
Energy Sistem Urban Box Supernova does not support smartphone app control. 54% of portable speakers offer this feature.
No compatible mobile app for speaker control.
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

yes
Energy Sistem Urban Box Supernova includes a remote control. 85.1% of portable speakers offer this feature.
A dedicated remote-control option 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
Energy Sistem Urban Box Supernova 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

512 g
Energy Sistem Urban Box Supernova weighs 512 g which is lighter than that of 65.8% of portable speakers and equal to that of 0.1% 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

12.8 cm
Energy Sistem Urban Box Supernova has a height of 12.8 cm which is taller than that of 51.2% of portable speakers and equal to that of 0.3% of portable speakers.
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

9 cm
Energy Sistem Urban Box Supernova has a width of 9 cm which is narrower than that of 79.7% of portable speakers and equal to that of 1.6% 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

9 cm
Energy Sistem Urban Box Supernova has a depth of 9 cm which is deeper than that of 54.4% of portable speakers and equal to that of 1.9% 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

strap
Show more
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

no
Energy Sistem Urban Box Supernova does not support firmware updates. 47.2% of portable speakers offer this feature.
No supported user-accessible firmware update path.
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

yes
Energy Sistem Urban Box Supernova supports voice assistants. 73.6% of portable speakers offer this feature.
Supports direct 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
Energy Sistem Urban Box Supernova does not support Spotify Connect. 10.8% of portable speakers offer this feature.
Does not support native Spotify Connect.
Show more

Energy Sistem Urban Box Supernova vs the average portable speaker

  • Has a noise-canceling microphone
    Energy Sistem Urban Box Supernova has a noise-canceling microphone, while the average portable speaker does not have a noise-canceling microphone.
    Uses microphone noise/echo cancellation for calls or voice.
    What it is: Indicates whether the microphones can reduce surrounding noise during capture.
    When it matters: When calls or voice commands must remain clear around background noise.

    Importance: LOW

    Good value: yes

    Energy Sistem Urban Box Supernova has a noise-canceling microphone, while the average portable speaker does not have a noise-canceling microphone.
  • 1 hours shorter charging time
    Energy Sistem Urban Box Supernova has a shorter charging time than the average portable speaker (2 hours vs 3 hours).
    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

    Energy Sistem Urban Box Supernova has a shorter charging time than the average portable speaker (2 hours vs 3 hours).2 hours vs 3 hours
  • 4 more EQ presets
    Energy Sistem Urban Box Supernova has more EQ presets than the average portable speaker (4 vs 0).
    4 eq presets.
    What it is: The number of preset sound tuning profiles that can be selected.
    When it matters: When you want more ready-made sound profiles for different content.

    Importance: LOW

    Good value: >= 4 presets

    Energy Sistem Urban Box Supernova has more EQ presets than the average portable speaker (4 vs 0).4 vs 0
  • Has built-in stereo speakers
    Energy Sistem Urban Box Supernova has built-in stereo speakers, while the average portable speaker does not have built-in stereo speakers.
    Provides true stereo output within the unit.
    What it is: Shows whether the device uses separate left and right audio channels.
    When it matters: When true left-and-right channel playback matters without pairing a second speaker.

    Importance: LOW

    Good value: yes

    Energy Sistem Urban Box Supernova has built-in stereo speakers, while the average portable speaker does not have built-in stereo speakers.
  • Claims MIL-STD-810 compliance
    Energy Sistem Urban Box Supernova claims MIL-STD-810 compliance, while the average portable speaker does not claim MIL-STD-810 compliance.
    What it is: Shows whether testing against MIL-STD-810 durability procedures is claimed.
    When it matters: When independently defined durability test procedures matter.

    Importance: LOW

    Good value: yes

    Energy Sistem Urban Box Supernova claims MIL-STD-810 compliance, while the average portable speaker does not claim MIL-STD-810 compliance.
  • 1 more USB ports
    Energy Sistem Urban Box Supernova has more USB ports than the average portable speaker (2 vs 1).
    Physical USB ports: 2.
    What it is: The number of USB ports available on the speaker.
    When it matters: When several wired accessories or storage devices need USB connections.

    Importance: LOW

    Good value: >= 1

    Energy Sistem Urban Box Supernova has more USB ports than the average portable speaker (2 vs 1).2 vs 1
  • Has a USB Type-C port
    Energy Sistem Urban Box Supernova 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.
    What it is: Indicates whether the device uses a USB Type-C connector.
    When it matters: When modern charging and connection compatibility matter.

    Importance: LOW

    Good value: yes

    Energy Sistem Urban Box Supernova has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
  • Supports voice assistants
    Energy Sistem Urban Box Supernova supports voice assistants, while the average portable speaker does not support voice assistants.
    Supports direct voice-assistant control.
    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

    Energy Sistem Urban Box Supernova supports voice assistants, while the average portable speaker does not support voice assistants.
  • Has a noise-canceling microphone
    Energy Sistem Urban Box Supernova has a noise-canceling microphone, while the average portable speaker does not have a noise-canceling microphone.
  • Has built-in stereo speakers
    Energy Sistem Urban Box Supernova has built-in stereo speakers, while the average portable speaker does not have built-in stereo speakers.
  • 1 more USB ports
    Energy Sistem Urban Box Supernova has more USB ports than the average portable speaker (2 vs 1).
  • Has a USB Type-C port
    Energy Sistem Urban Box Supernova has a USB Type-C port, while the average portable speaker does not have a USB Type-C port.
  • Has an external memory card slot
    Energy Sistem Urban Box Supernova has an external memory card slot, while the average portable speaker does not have an external memory card slot.
  • 0.1 Bluetooth levels newer
    Energy Sistem Urban Box Supernova has a newer Bluetooth version than the average portable speaker (5.1 vs 5.0).
  • 1 hours shorter charging time
    Energy Sistem Urban Box Supernova has a shorter charging time than the average portable speaker (2 hours vs 3 hours).
  • Claims MIL-STD-810 compliance
    Energy Sistem Urban Box Supernova claims MIL-STD-810 compliance, while the average portable speaker does not claim MIL-STD-810 compliance.
  • 4 more EQ presets
    Energy Sistem Urban Box Supernova has more EQ presets than the average portable speaker (4 vs 0).
  • Includes a remote control
    Energy Sistem Urban Box Supernova includes a remote control, while the average portable speaker does not include a remote control.
  • Has an FM radio
    Energy Sistem Urban Box Supernova has an FM radio, while the average portable speaker does not have an FM radio.
  • 9.1 cm narrower
    Energy Sistem Urban Box Supernova is narrower than the average portable speaker (9 cm vs 18.1 cm).
  • 288 g lighter
    Energy Sistem Urban Box Supernova is lighter than the average portable speaker (512 g vs 800 g).
  • Supports voice assistants
    Energy Sistem Urban Box Supernova supports voice assistants, while the average portable speaker does not support voice assistants.

Total
Overall
Audio
Connectivity
Battery
Durability
Controls
Design
Smart features
  • 2,000 Hz lower maximum frequency
    Energy Sistem Urban Box Supernova has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).
    Upper frequency-response endpoint: 18000 Hz.
  • 20 dB lower signal-to-noise ratio
    Energy Sistem Urban Box Supernova has a lower signal-to-noise ratio than the average portable speaker (60 dB vs 80 dB).
    Signal-to-noise ratio: 60.00 dB.
  • 10 mm smaller main driver
    Energy Sistem Urban Box Supernova has a smaller main driver than the average portable speaker (40 mm vs 50.00 mm).
    Primary driver diameter: 40.00 mm.
  • 4 W less audio output power
    Energy Sistem Urban Box Supernova has less audio output power than the average portable speaker (16 W vs 20.00 W).
    Total RMS output: 16.00 W.
  • Does not have a battery level indicator
    Energy Sistem Urban Box Supernova does not have a battery level indicator, while the average portable speaker has a battery level indicator.
  • 600 mAh less battery capacity
    Energy Sistem Urban Box Supernova has a smaller battery capacity than the average portable speaker (2000 mAh vs 2,600 mAh).
  • Worse ingress protection
    Energy Sistem Urban Box Supernova has worse ingress protection than the average portable speaker (IPX4 vs IPX5).
  • Does not support smartphone app control
    Energy Sistem Urban Box Supernova does not support smartphone app control, while the average portable speaker supports smartphone app control.
    No compatible mobile app for speaker control.
  • Does not support smartphone app control
    Energy Sistem Urban Box Supernova does not support smartphone app control, while the average portable speaker supports smartphone app control.
    No compatible mobile app for speaker 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

    Energy Sistem Urban Box Supernova does not support smartphone app control, while the average portable speaker supports smartphone app control.
  • 2,000 Hz lower maximum frequency
    Energy Sistem Urban Box Supernova has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).
    Upper frequency-response endpoint: 18000 Hz.
    What it is: The highest audible frequency the speaker can reproduce.
    When it matters: When upper-treble extension and high-frequency detail matter.

    Importance: MEDIUM

    Good value: >= 20000 Hz

    Energy Sistem Urban Box Supernova has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).18000 Hz vs 20000 Hz
  • 20 dB lower signal-to-noise ratio
    Energy Sistem Urban Box Supernova has a lower signal-to-noise ratio than the average portable speaker (60 dB vs 80 dB).
    Signal-to-noise ratio: 60.00 dB.
    What it is: The ratio between the wanted audio signal and background noise.
    When it matters: When cleaner audio with less background noise matters.

    Importance: MEDIUM

    Good value: >= 80 dB

    Energy Sistem Urban Box Supernova has a lower signal-to-noise ratio than the average portable speaker (60 dB vs 80 dB).60.00 dB vs 80 dB
  • 10 mm smaller main driver
    Energy Sistem Urban Box Supernova 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

    Energy Sistem Urban Box Supernova 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 battery level indicator
    Energy Sistem Urban Box Supernova does not have a battery level indicator, while the average portable speaker has a battery level indicator.
    What it is: Shows whether the remaining battery level can be displayed clearly.
    When it matters: When you want to know the remaining charge before or during use.

    Importance: LOW

    Good value: yes

    Energy Sistem Urban Box Supernova does not have a battery level indicator, while the average portable speaker has a battery level indicator.
  • 600 mAh less battery capacity
    Energy Sistem Urban Box Supernova has a smaller battery capacity than the average portable speaker (2000 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

    Energy Sistem Urban Box Supernova has a smaller battery capacity than the average portable speaker (2000 mAh vs 2,600 mAh).2000 mAh vs 2600 mAh
  • Worse ingress protection
    Energy Sistem Urban Box Supernova has worse ingress protection than the average portable speaker (IPX4 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+

    Energy Sistem Urban Box Supernova has worse ingress protection than the average portable speaker (IPX4 vs IPX5).IPX4 vs IPX5
  • 4 W less audio output power
    Energy Sistem Urban Box Supernova has less audio output power than the average portable speaker (16 W vs 20.00 W).
    Total RMS output: 16.00 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

    Energy Sistem Urban Box Supernova has less audio output power than the average portable speaker (16 W vs 20.00 W).16.00 W vs 20.00 W
Total
Overall
Audio
Battery
Durability
Controls

Graphic comparison of Energy Sistem Urban Box Supernova and other products in the Portable Speakers category

Attribute category
Attribute
No results found

Third-party reviews

United Kingdom
amazon
4.1
29 Reviews
amazon
4.2
12 Reviews

(Reviews last updated: August 2026)

What customers like about Energy Sistem Urban Box Supernova?

  • Good value for money with reasonable audio performance for its price point.
  • Compact and lightweight cylindrical chassis making it highly portable.
  • Versatile multi-source connectivity including Bluetooth, USB, microSD card, and 3.5mm AUX input.
  • Visually appealing aesthetic design featuring customizable RGB LED light sequences.
  • Sturdy build quality with an IPX4 splash-proof fabric coating suitable for outdoor use.
  • Capable of pairing with another unit via True Wireless Stereo to double the audio output.

What customers dislike about Energy Sistem Urban Box Supernova?

  • Disappointing real-world battery life that often falls significantly short of the advertised 12 hours when the RGB lights are active.
  • Sound output lacks depth and can feel underpowered or flat at higher volumes.
  • Absence of a dedicated battery level indicator on the physical body of the speaker.
  • Occasional quality control issues reported with battery charging functionality out of the box.

Video reviews

Best alternatives

anker-soundcore-select
Anker Soundcore Select

Portable Speakers

8.0
anker-soundcore
Anker Soundcore

Portable Speakers

7.8
altec-the-jacket
Altec The Jacket

Portable Speakers

7.7
tronsmart-mirtune-h1
Tronsmart Mirtune H1

Portable Speakers

7.7
musibaby-m68
Musibaby M68

Portable Speakers

7.6
xiaomi-bluetooth-speaker-mini
Xiaomi Bluetooth Speaker Mini

Portable Speakers

7.5
tronsmart-element-t2-plus
Tronsmart Element T2 Plus

Portable Speakers

7.5
pure-jongo-t2
Pure Jongo T2

Portable Speakers

7.5
grundig-gbt-club
Grundig GBT Club

Portable Speakers

7.4
anker-soundcore-mini-3
Anker Soundcore Mini 3

Portable Speakers

7.4
tronsmart-t7-mini
Tronsmart T7 Mini

Portable Speakers

7.4
homespot-extreme
Homespot Extreme

Portable Speakers

7.4

Compare Energy Sistem Urban Box Supernova with other products in the Portable Speakers category

VS
VS

Compare