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Scored using Portable Speakers Methodology v1.0
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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.
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Sharp GX-BT280 Review | 130 Data compared

Avg. price:~£55Audio output power:20.00 WBattery life:12 hoursIP rating:IP56Bluetooth version:4.2Weight:440 g

Sharp GX-BT280 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.

6.2/10

Overall score

Score
6.2/ 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–¼ Worse than 83% of models
Score components

80%

6.2

Technical score

20%

?

User score

â–¼Worse than 83% of portable speakers
7.3

Value for money

Value for money
7.3/ 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–¼ Worse than 79% of models
Score components

70%

6.2

Overall score

30%

10

Price

â–¼Worse than 79%
6.2

Technical score

Technical score
6.2/ 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–¼ Worse than 74% of models
Score components

32%

6.0

Audio

20%

6.4

Battery

18%

7.1

Durability

16%

5.4

Connectivity

8%

5.4

Controls

3%

8.9

Design

3%

5.0

Smart features

â–¼Worse than 74%
?

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

  • No image
No image
Where to buy
    N/A~ £55
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 Sharp GX-BT280

Technical score
Technical score
6.2/ 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–¼ Worse than 74% of models
Score components:

32%

6.0

Audio

20%

6.4

Battery

18%

7.1

Durability

16%

5.4

Connectivity

8%

5.4

Controls

3%

8.9

Design

3%

5.0

Smart features

6.2
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:
Sharp GX-BT280 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
7.3/ 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–¼ Worse than 79% of models
Score components:

70%

6.2

Overall score

30%

10

Price

7.3
Audio output power
20 W
Market range: <4 W – >100 W
This portable speaker has an audio output power of 20 W which is higher than that of 46.1% of portable speakers and equal to that of 11.4% of portable speakers.
Driver unit size
45 mm
Market range: <38 mm – >101 mm
This portable speaker has a driver unit size of 45 mm which is smaller than that of 60.9% of portable speakers and equal to that of 8.6% of portable speakers.
Number of drivers
2
Market range: <0 – >5
This portable speaker has 2 drivers, which is more than 24.5% of portable speakers and equal to the number in 45.5% of portable speakers.
Frequency response tolerance
?
Lowest frequency
150 Hz
Market range: <20 Hz – >120 Hz
This portable speaker has a lowest frequency of 150 Hz which is higher than that of 93% of portable speakers and equal to that of 2.5% of portable speakers.
Show more
Bluetooth connectivity
yes
This portable speaker supports Bluetooth audio. 5.4% of portable speakers offer this feature.
Bluetooth version
4.2
Market range: <3 – >5.3
This portable speaker supports Bluetooth version 4.2 which is older than that of 53.8% of portable speakers and equal to that of 17.8% of portable speakers.
Maximum Bluetooth range
10 m
Market range: <10 m – >30 m
This portable speaker has a maximum Bluetooth range of 10 m which is longer than that of 4.3% of portable speakers and equal to that of 70.2% of portable speakers.
Bluetooth profiles supported
A2DP; 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
2,800 mAh
Market range: <900 mAh – >6.6k mAh
This portable speaker has a battery capacity of 2,800 mAh which is larger than that of 57.7% of portable speakers and equal to that of 0.2% of portable speakers.
Charging time
3 hours
Market range: <2 hours – >5 hours
This portable speaker 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
15 W
Market range: <5 W – >30 W
This portable speaker has a maximum charging input power of 15 W which is higher than that of 73.6% of portable speakers and equal to that of 9.5% 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
IP56
This portable speaker has an IP rating of IP56 which provides better ingress protection than 75.6% of portable speakers and the same ingress protection as 1.2% 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
Not waterproof m
This portable speaker is not rated for underwater use. 47.6% of portable speakers have a native waterproof depth rating.
Drop resistance
?
Show more
On-device controls placement
front; rear
Touchscreen
no
This portable speaker does not have a touchscreen. 0.3% of portable speakers offer this feature.
Smartphone app control
?
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
440 g
Market range: <200 g – >5.6k g
This portable speaker weighs 440 g which is lighter than that of 70.8% of portable speakers and equal to that of 0.2% of portable speakers.
Height
18.6 cm
Market range: <5.79 cm – >29 cm
This portable speaker has a height of 18.6 cm which is taller than that of 72% of portable speakers and equal to that of 0.2% of portable speakers.
Width
6.7 cm
Market range: <7.6 cm – >37 cm
This portable speaker has a width of 6.7 cm which is narrower than that of 94.5% of portable speakers and equal to that of 0.3% of portable speakers.
Depth
6.7 cm
Market range: <4.3 cm – >19.97 cm
This portable speaker has a depth of 6.7 cm which is shallower than that of 67.3% of portable speakers and equal to that of 1% of portable speakers.
Carry options
strap
Show more
Companion app name
?
Firmware updates
no
This portable speaker does not support firmware updates. 47.2% of portable speakers offer this feature.
Firmware update method
?
Voice assistant support
yes
This portable speaker supports voice assistants. 73.6% of portable speakers offer this feature.
Supports direct voice-assistant control.
Spotify Connect
no
This portable speaker does not support Spotify Connect. 10.8% of portable speakers offer this feature.
Show more

Sharp GX-BT280 vs the average portable speaker

246810TotalAudioConnectivityBatteryDurabilityControlsDesignSmart features
  • Better ingress protection
    This portable speaker has better ingress protection than the average portable speaker (IP56 vs IPX5).
    IP56 vs IPX5
  • 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.
  • 10 dB higher signal-to-noise ratio
    This portable speaker has a higher signal-to-noise ratio than the average portable speaker (90 dB vs 80 dB).
    90 dB vs 80 dB
  • 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 W higher charging input power
    This portable speaker has higher charging input power than the average portable speaker (15 W vs 10 W).
    15 W vs 10 W
  • Supports voice assistants
    This portable speaker supports voice assistants, while the average portable speaker does not support voice assistants.
    Supports direct voice-assistant control.
  • 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.
  • 11.4 cm narrower
    This portable speaker is narrower than the average portable speaker (6.7 cm vs 18.1 cm).
    6.7 cm vs 18.1 cm
  • 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.
  • 10 dB higher signal-to-noise ratio
    This portable speaker has a higher signal-to-noise ratio than the average portable speaker (90 dB vs 80 dB).
    90 dB vs 80 dB
  • 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.
  • 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.
  • 5 W higher charging input power
    This portable speaker has higher charging input power than the average portable speaker (15 W vs 10 W).
    15 W vs 10 W
  • Better ingress protection
    This portable speaker has better ingress protection than the average portable speaker (IP56 vs IPX5).
    IP56 vs IPX5
  • 11.4 cm narrower
    This portable speaker is narrower than the average portable speaker (6.7 cm vs 18.1 cm).
    6.7 cm vs 18.1 cm
  • 360 g lighter
    This portable speaker is lighter than the average portable speaker (440 g vs 800 g).
    440 g vs 800 g
  • Supports voice assistants
    This portable speaker supports voice assistants, while the average portable speaker does not support voice assistants.
    Supports direct voice-assistant control.
  • 90 Hz less deep bass extension
    This portable speaker has less deep bass extension than the average portable speaker (150 Hz vs 60 Hz).
    150 Hz vs 60 Hz
  • 5 °C higher minimum operating temperature
    This portable speaker has a higher minimum operating temperature than the average portable speaker (5 °C vs 0 °C).
    5 °C vs 0 °C
  • Does not have a battery level indicator
    This portable speaker does not have a battery level indicator, while the average portable speaker has a battery level indicator.
  • 0.8 Bluetooth levels older
    This portable speaker has an older Bluetooth version than the average portable speaker (4.2 vs 5).
    4.2 vs 5
  • 2 dB SPL lower maximum sound pressure
    This portable speaker has a lower maximum sound pressure level than the average portable speaker (90 dB SPL vs 92 dB SPL).
    90 dB SPL vs 92 dB SPL
  • 5 mm smaller main driver
    This portable speaker has a smaller main driver than the average portable speaker (45 mm vs 50 mm).
    45 mm vs 50 mm
  • 4.21x less popular
    Sharp GX-BT280 is less popular than the average portable speaker (1 vs 4.21).
    1 vs 4.21
  • 6.2 cm taller
    This portable speaker is taller than the average portable speaker (18.6 cm vs 12.4 cm).
    18.6 cm vs 12.4 cm
  • 4.21x less popular
    Sharp GX-BT280 is less popular than the average portable speaker (1 vs 4.21).
    1 vs 4.21
  • 3.2% worse value for money
    Sharp GX-BT280 offers worse value for money than the average portable speaker (7.31 vs 7.5).
    7.31 vs 7.55
  • 90 Hz less deep bass extension
    This portable speaker has less deep bass extension than the average portable speaker (150 Hz vs 60 Hz).
    150 Hz vs 60 Hz
  • 5 mm smaller main driver
    This portable speaker has a smaller main driver than the average portable speaker (45 mm vs 50 mm).
    45 mm vs 50 mm
  • 2 dB SPL lower maximum sound pressure
    This portable speaker has a lower maximum sound pressure level than the average portable speaker (90 dB SPL vs 92 dB SPL).
    90 dB SPL vs 92 dB SPL
  • 0.8 Bluetooth levels older
    This portable speaker has an older Bluetooth version than the average portable speaker (4.2 vs 5).
    4.2 vs 5
  • Does not have a battery level indicator
    This portable speaker does not have a battery level indicator, while the average portable speaker has a battery level indicator.
  • 5 °C higher minimum operating temperature
    This portable speaker has a higher minimum operating temperature than the average portable speaker (5 °C vs 0 °C).
    5 °C vs 0 °C
  • 6.2 cm taller
    This portable speaker is taller than the average portable speaker (18.6 cm vs 12.4 cm).
    18.6 cm vs 12.4 cm

Expert reviews

In-depth analysis and verdict from leading tech publications

T
techradar.com
21/02/2019
Summary of the review
Sharp GX-BT280 Bluetooth speaker review - TechRadar
T
technuovo.com
23/07/2019
Summary of the review
Sharp GX-BT280 Bluetooth Speaker Review - TechNuovo
T
testr.at
15/05/2019
Summary of the review
Sharp GX-BT280 Bluetooth Speaker Review
(Translated)Show original
M
myc-media.de
05/03/2019
Summary of the review
Sharp GX-BT280 Bluetooth Speaker
(Translated)Show original
K
kurtzberichte.de
08/10/2025
Summary of the review
Review of the Sharp GX-BT280 Stereo Bluetooth Speaker
(Translated)Show original
A
androidiani.com
08/07/2019
Summary of the review
Sharp GX-BT280: Techprincess Bluetooth speaker review +1
(Translated)Show original
T
techprincess.it
16/04/2019
Summary of the review
Sharp GX-BT280 Review: Is It Worth Buying?
(Translated)Show original
T
techradar.com
21/02/2019
Summary of the review
Sharp GX-BT280 Bluetooth speaker review
(Translated)Show original
T
technuovo.com
23/07/2019
Summary of the review
Sharp GX-BT280 Bluetooth Speaker Review
(Translated)Show original

Third-party reviews

What customers like about Sharp GX-BT280

  • Great value for money with a budget-friendly price point
  • Rugged, durable build quality that stands up well to outdoor use
  • Surprisingly loud audio output and powerful sound for its compact size
  • Clear, detailed midrange and crisp high frequencies
  • IP56 dustproof and water-resistant rating, making it ideal for the beach or pool
  • Convenient built-in carry loop for enhanced portability
  • Long battery life of up to 12 hours on a single charge
  • Large, intuitive, and easy-to-use control buttons
  • Seamless integration with Google Assistant and Siri voice assistants
  • Supports True Wireless Stereo (TWS) pairing to link two units together

What customers don't like about Sharp GX-BT280

  • Weak and limited bass reproduction despite digital signal processing
  • Sound can become harsh, distorted, or tinny at maximum volume
  • Built-in microphone quality is subpar for hands-free calling
  • Cylindrical shape makes it difficult to lay stably in a horizontal position
  • Sound quality drops noticeably if the ports are blocked while resting vertically
  • Awkwardly placed ends tend to collect dust and debris easily
  • Relatively slow charging time taking a few hours to fully replenish
  • Relies on older Bluetooth 4.2 technology rather than newer standards

Verdict

The Sharp GX-BT280 is a compact, cylindrical portable wireless speaker featuring 20W RMS total power output driven by dual high-quality drivers, built-in digital signal processing (DSP) technology, and dual passive radiators for enhanced bass performance. Measuring 67 x 67 x 186 mm and weighing 440g, it connects via Bluetooth 4.2 or a 3.5mm auxiliary port, incorporates a built-in microphone for hands-free calling and Siri/Google Assistant voice commands, and offers True Wireless Stereo pairing via Duo Mode. Main advantages include its rugged IP56 dust and water-resistant rating, a handy integrated carry loop, a 2800 mAh rechargeable lithium-ion battery delivering up to 12 hours of playback, and physical one-touch controls. However, notable drawbacks include its aging Micro-USB charging port rather than modern USB-C, occasional audio distortion at maximum volume levels, a lack of an integrated FM radio, and the absence of customizable equalizer settings.

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