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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

Energy Sistem Music Box 9 Plus Review | 130 Data compared

Avg. price:~£90Audio output power:50.00 WBattery life:12 hoursIP rating:?Bluetooth version:5.0Weight:2400 g

Energy Sistem Music Box 9 Plus 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.

Energy Sistem Music Box 9 Plus
7.2/10

Overall score

Score
7.2/ 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
â–² Better than 79% of models
Score components

80%

7.2

Technical score

20%

?

User score

â–²Better than 79% of portable speakers
8.1

Value for money

Value for money
8.1/ 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
â–² Better than 86% of models
Score components

70%

7.2

Overall score

30%

10

Price

â–²Better than 86%
7.2

Technical score

Technical score
7.2/ 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
â–² Better than 87% of models
Score components

32%

7.3

Audio

20%

7.5

Battery

18%

8.2

Durability

16%

6.2

Connectivity

8%

7.2

Controls

3%

7.0

Design

3%

4.9

Smart features

â–²Better than 87%
?

User score

User score
8.0/ 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
â–¼ Worse than 71% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

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Where to buy
    N/A~ £90
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 Energy Sistem Music Box 9 Plus

Technical score
Technical score
7.2/ 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
â–² Better than 87% of models
Score components:

32%

7.3

Audio

20%

7.5

Battery

18%

8.2

Durability

16%

6.2

Connectivity

8%

7.2

Controls

3%

7.0

Design

3%

4.9

Smart features

7.2
User score
User score
8.0/ 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
â–¼ Worse than 71% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 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
â–¼ Worse than 99% of models
Popularity:
Energy Sistem Music Box 9 Plus has a popularity score of 1 point, which is lower than 59.2% of products in this category.
1.0
Value for money
Value for money
8.1/ 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
â–² Better than 86% of models
Score components:

70%

7.2

Overall score

30%

10

Price

8.1
Audio output power
50 W
Market range: <4 W – >100 W
This portable speaker has an audio output power of 50 W which is higher than that of 75.8% of portable speakers and equal to that of 3.3% of portable speakers.
Driver unit size
?
Number of drivers
4
Market range: <0 – >5
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
60 Hz
Market range: <20 Hz – >120 Hz
This portable speaker has a lowest frequency of 60 Hz which is lower than that of 43.8% of portable speakers and equal to that of 9.2% 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
Market range: <3 – >5.3
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
20 m
Market range: <10 m – >30 m
This portable speaker has a maximum Bluetooth range of 20 m which is longer than that of 78.7% of portable speakers and equal to that of 6.4% of portable speakers.
Bluetooth profiles supported
A2DP; AVRCP; HFP; HSP
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
12 hours
Market range: <6 hours – >24 hours
This portable speaker 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
4,000 mAh
Market range: <900 mAh – >6.6k mAh
This portable speaker has a battery capacity of 4,000 mAh which is larger than that of 70.2% of portable speakers and equal to that of 3.9% of portable speakers.
Charging time
2 hours
Market range: <2 hours – >5 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
12 W
Market range: <5 W – >30 W
This portable speaker has a maximum charging input power of 12 W which is higher than that of 71% of portable speakers and equal to that of 2.2% 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
?
Water resistance
yes
This portable speaker is water resistant. 38.3% of portable speakers offer this feature.
Dust resistance
?
Waterproof depth rating
?
Drop resistance
?
Show more
On-device controls placement
top
Touchscreen
no
This portable speaker does not have a touchscreen. 0.3% of portable speakers offer this feature.
Smartphone app control
?
Remote control
yes
This portable speaker includes a remote control. 85.1% 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
2,400 g
Market range: <200 g – >5.6k g
This portable speaker weighs 2,400 g which is heavier than that of 75% of portable speakers and equal to that of 0.3% of portable speakers.
Height
10.6 cm
Market range: <5.79 cm – >29 cm
This portable speaker has a height of 10.6 cm which is shorter than that of 58% of portable speakers and equal to that of 0.2% of portable speakers.
Width
31 cm
Market range: <7.6 cm – >37 cm
This portable speaker has a width of 31 cm which is wider than that of 81.6% of portable speakers and equal to that of 0.5% of portable speakers.
Depth
12 cm
Market range: <4.3 cm – >19.97 cm
This portable speaker has a depth of 12 cm which is deeper than that of 69% of portable speakers and equal to that of 0.8% of portable speakers.
Carry options
handle
Show more
Companion app name
?
Firmware updates
?
Firmware update method
USB
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

Energy Sistem Music Box 9 Plus vs the average portable speaker

246810TotalAudioConnectivityBatteryDurabilityControlsDesignSmart features
  • 10 m longer Bluetooth range
    This portable speaker has a longer Bluetooth range than the average portable speaker (20 m vs 10 m).
    20 m vs 10 m
  • 2 more speaker drivers
    This portable speaker has more speaker drivers than the average portable speaker (4 vs 2).
    4 vs 2
  • 30 W more audio output power
    This portable speaker has more audio output power than the average portable speaker (50 W vs 20 W).
    50 W vs 20 W
  • 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
  • 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.
  • Has a power bank function
    This portable speaker has a power bank function, while the average portable speaker does not have a power bank function.
  • 1,400 mAh more battery capacity
    This portable speaker has a larger battery capacity than the average portable speaker (4,000 mAh vs 2,600 mAh).
    4,000 mAh vs 2,600 mAh
  • 2 more EQ presets
    This portable speaker has more EQ presets than the average portable speaker (2 vs 0).
    2 vs 0
  • 6.9% better value for money
    Energy Sistem Music Box 9 Plus offers better value for money than the average portable speaker (8.06 vs 7.5).
    8.06 vs 7.55
  • 2 more speaker drivers
    This portable speaker has more speaker drivers than the average portable speaker (4 vs 2).
    4 vs 2
  • 30 W more audio output power
    This portable speaker has more audio output power than the average portable speaker (50 W vs 20 W).
    50 W vs 20 W
  • 10 m longer Bluetooth range
    This portable speaker has a longer Bluetooth range than the average portable speaker (20 m vs 10 m).
    20 m vs 10 m
  • Has an external memory card slot
    This portable speaker has an external memory card slot, while the average portable speaker does not have an external memory card slot.
    Has a removable memory-card slot for playback.
  • 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
  • Has a power bank function
    This portable speaker has a power bank function, while the average portable speaker does not have a power bank function.
  • 1,400 mAh more battery capacity
    This portable speaker has a larger battery capacity than the average portable speaker (4,000 mAh vs 2,600 mAh).
    4,000 mAh vs 2,600 mAh
  • Includes a power adapter
    This portable speaker includes a power adapter, while the average portable speaker does not include a power adapter.
  • 2 W higher charging input power
    This portable speaker has higher charging input power than the average portable speaker (12 W vs 10 W).
    12 W vs 10 W
  • 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.
  • 2 more EQ presets
    This portable speaker has more EQ presets than the average portable speaker (2 vs 0).
    2 vs 0
  • Includes a remote control
    This portable speaker includes a remote control, while the average portable speaker does not include a remote control.
  • Has an FM radio
    This portable speaker has an FM radio, while the average portable speaker does not have an FM radio.
  • 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.
  • 2,000 Hz lower maximum frequency
    This portable speaker has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).
    18,000 Hz vs 20,000 Hz
  • 7 fewer paired devices remembered
    This portable speaker remembers fewer paired devices than the average portable speaker (1 vs 8).
    1 vs 8
  • 1,600 g heavier
    This portable speaker is heavier than the average portable speaker (2,400 g vs 800 g).
    2,400 g vs 800 g
  • Does not provide voice prompts
    This portable speaker does not provide voice prompts, while the average portable speaker provides voice prompts.
    No spoken status prompts; feedback is absent, visual, or tone-based.
  • 12.9 cm wider
    This portable speaker is wider than the average portable speaker (31 cm vs 18.1 cm).
    31 cm vs 18.1 cm
  • 4.21x less popular
    Energy Sistem Music Box 9 Plus is less popular than the average portable speaker (1 vs 4.21).
    1 vs 4.21
  • 3.7 cm deeper
    This portable speaker is deeper than the average portable speaker (12 cm vs 8.3 cm).
    12 cm vs 8.3 cm
  • 4.21x less popular
    Energy Sistem Music Box 9 Plus is less popular than the average portable speaker (1 vs 4.21).
    1 vs 4.21
  • 2,000 Hz lower maximum frequency
    This portable speaker has a lower maximum frequency than the average portable speaker (18,000 Hz vs 20,000 Hz).
    18,000 Hz vs 20,000 Hz
  • 7 fewer paired devices remembered
    This portable speaker remembers fewer paired devices than the average portable speaker (1 vs 8).
    1 vs 8
  • Does not provide voice prompts
    This portable speaker does not provide voice prompts, while the average portable speaker provides voice prompts.
    No spoken status prompts; feedback is absent, visual, or tone-based.
  • 1,600 g heavier
    This portable speaker is heavier than the average portable speaker (2,400 g vs 800 g).
    2,400 g vs 800 g
  • 12.9 cm wider
    This portable speaker is wider than the average portable speaker (31 cm vs 18.1 cm).
    31 cm vs 18.1 cm
  • 3.7 cm deeper
    This portable speaker is deeper than the average portable speaker (12 cm vs 8.3 cm).
    12 cm vs 8.3 cm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Expert reviews

In-depth analysis and verdict from leading tech publications

L
lesnumeriques.com
22/11/2018
Summary of the review
Energy Sistem Music Box 9 review: a wireless speaker that...
(Translated)Show original
P
presse-citron.net
22/06/2018
Summary of the review
Energy Sistem Music Box 9 Review: A Pleasant Surprise
(Translated)Show original
M
maison-et-domotique.com
21/06/2018
Summary of the review
Energy Sistem Music Box 9 Speaker Review (+ #Giveaway)
(Translated)Show original
D
droidpanic.com
11/10/2026
Summary of the review
Energy Sistem Music Box 9+ Bluetooth Speaker Review
(Translated)Show original

Third-party reviews

What customers like about Energy Sistem Music Box 9 Plus

  • Powerful 50W audio output with solid volume capacity
  • Enhanced deep bass performance supported by a visible rear passive radiator
  • Versatile multi-source playback including Bluetooth 5.0, microSD cards, USB drives, and 3.5mm AUX input
  • Built-in FM radio with automatic station search capabilities
  • True Wireless Stereo (TWS) support allowing two speakers to pair for expanded stereo sound
  • Solid and durable physical construction featuring a protective silicone wrap design
  • Good overall value for money relative to its audio output and feature set

What customers don't like about Energy Sistem Music Box 9 Plus

  • Noticeable static beeping or background hissing sound when playing audio at low volumes
  • Considerably heavy and bulky body volume, which reduces its overall on-the-go portability
  • Weak stereo separation and narrow soundstage when using a single unit with complex tracks
  • Lacks any formal water resistance or IP rating for outdoor safety
  • Control buttons lack continuous backlighting, making them difficult to see in dark environments
  • Mid-range frequencies can occasionally sound tightly squeezed or compressed

Verdict

The Energy Sistem Music Box 9 Plus is a 50W portable Bluetooth 5.0 speaker featuring a 2.0 audio system with two full-range drivers, two high-frequency tweeters, and a rear passive radiator providing deep bass across a 60 Hz to 18 kHz frequency response. Its main pros include versatile playback options via a built-in FM radio, USB port, microSD slot, and 3.5mm AUX input, as well as True Wireless Stereo (TWS) multi-speaker pairing and a 4000 mAh battery delivering up to 12 hours of playtime. However, its primary cons are a lack of water resistance, potential sound distortion at volumes above 70%, and a relatively heavy 2.4 kg build that limits its overall portability.

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