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Klim Fusion C Review | 93 Data compared

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  • Avg. price in UK: ~£20
  • Avg. price in US: ~$20
  • Form factor: in-ear
  • Connectivity: wired
  • Battery life: N/A hours
  • Active noise cancellation (ANC): no

Klim Fusion C review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

5.0

Overall score

What it is: An overall evaluation of the headphones' quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best headphones on the market.

Score components:

80.0%

5.0

Technical Score

20.0%

?

User score

Good
5.0

Technical Score

What it is: An assessment of the headphones' technical performance, covering key areas such as sound quality, noise cancelling, microphone performance, battery life, comfort, connectivity, features, and build quality.

When it matters: When you want to compare headphones based on technical performance and available features.

Score components:

52.0%

4.2

Sound

20.0%

4.1

Features

10.0%

8.3

Design

8.0%

5.1

Connectivity

6.0%

7.8

Battery

4.0%

7.1

Calls & Controls

Good
?

User score

What it is: A rating that combines user reviews and the total number of reviews received by the headphones.

When it matters: When you want to understand how headphones perform in real listening and how reliable they are in terms of comfort, audio quality, battery life, and long-term use.

Score components:

70.0%

?

User reviews

30.0%

?

Popularity

  • 5.9
    Gaming

    Score components:

    35.0%

    7.9

    Audio latency

    25.0%

    0.0

    Low-latency game mode

    20.0%

    10

    Can be used as a headset

    12.0%

    10

    Noise-canceling microphone

    8.0%

    0.0

    Battery life

  • 2.1
    Travel

    Score components:

    28.0%

    1.0

    Active noise cancellation (ANC)

    24.0%

    0.0

    Battery life

    18.0%

    10

    Weight

    16.0%

    0.0

    Multipoint support

    14.0%

    0.0

    Ambient sound mode

  • 5.2
    Calls

    Score components:

    28.0%

    10

    Noise-canceling microphone

    24.0%

    10

    Can be used as a headset

    18.0%

    0.0

    Multipoint support

    16.0%

    0.0

    Battery life

    14.0%

    0.0

    Companion app

  • 6.0
    Workout

    Score components:

    28.0%

    10

    Weight

    24.0%

    1.0

    Water resistance

    20.0%

    9.0

    IP rating

    16.0%

    0.0

    Battery life

    12.0%

    10

    Can be used as a headset

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Best prices in UK

    N/A~ £20

Best rankings

?

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

Verdict

The KLIM Fusion C is a durable pair of in-ear headphones designed with a USB-C connection, featuring a wide frequency range of 15 Hz to 21,000 Hz, a low impedance of 16 Ohms, and a sensitivity of 118 dB. Key characteristics include an L-shaped connector for improved longevity, a 1.3-meter tangle-free cable, and magnetized earbuds that snap together for easy storage. Main pros include the exceptional comfort provided by the included memory foam ear tips that offer passive noise isolation, a built-in microphone with volume/playback controls, and a generous 5-year warranty. On the downside, the audio profile is notably bass-heavy, which may not appeal to those seeking a neutral sound, and the earbuds are slightly heavier than standard models at approximately 20 grams.

Technical Specifications of Klim Fusion C

Technical Score

What it is: An assessment of the headphones' technical performance, covering key areas such as sound quality, noise cancelling, microphone performance, battery life, comfort, connectivity, features, and build quality.

When it matters: When you want to compare headphones based on technical performance and available features.

Score components:

52.0%

?

Sound

20.0%

?

Features

10.0%

?

Design

8.0%

?

Connectivity

6.0%

?

Battery

4.0%

?

Calls & Controls

5.0
Klim Fusion C has a technical score of 4.99 points, which is higher than that of 52.7% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the headphones.

When it matters: When you want to understand how headphones perform in real listening and how reliable they are in terms of comfort, audio quality, battery life, and long-term use.

Score components:

70.0%

0.0

User reviews

30.0%

1.0

Popularity

?
Popularity
What it is: An indicator based on the number of reviews received by the headphones.
When it matters: When you prefer headphones that have already been chosen and reviewed by many other users.
1.0
Klim Fusion C has a popularity of 1 points, which is lower than 72.7% of products in this category.
Ratio quality/price

What it is: An indicator that combines the headphones' overall rating with their cost.

When it matters: When you are looking for headphones that offer a strong balance of performance, features, and price.

Score components:

60.0%

5.0

Overall score

40.0%

10

Price

6.5
Klim Fusion C has a quality-to-price ratio of 6.5 points, which is lower than 60.6% of products in this category.
Active noise cancellation (ANC)
What it is: Reduces background noise using active technology
When it matters: When blocking office, travel, or aircraft noise is a priority.

Importance: HIGH

no
Klim Fusion C does not support active noise cancellation. 27.4% of headphones support active noise cancellation.
Driver type
What it is: Type of speaker driver technology used
When it matters: When the underlying sound character and driver technology matter to you.

Importance: MEDIUM

dynamic
Driver size
What it is: Diameter of the speaker driver unit
When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.

Importance: MEDIUM

9 mm
Klim Fusion C uses a driver size of 9 mm, smaller driver size than 92.3% of headphones and equal to 2.6% of headphones.
Number of drivers
What it is: Total number of speaker drivers per earcup
When it matters: When multi-driver designs are part of your buying criteria.

Importance: LOW

1
Klim Fusion C uses 1 drivers, equal to 96% of headphones.
Lowest frequency
What it is: Lowest audio frequency the headphones can reproduce
When it matters: When deeper bass extension matters for your music or movie listening.

Importance: MEDIUM

Good value: <=10 Hz

15 Hz
Klim Fusion C reaches a lowest frequency of 15 Hz, lower lowest frequency than 58.5% of headphones and equal to 5.7% of headphones.
Show more
Noise-canceling microphone
What it is: Built-in microphone reduces background noise during calls
When it matters: When you take calls in busy spaces and want your voice to stay clearer.

Importance: MEDIUM

yes
Klim Fusion C supports a noise-canceling microphone. 54.5% of headphones support noise-canceling microphones.
Can be used as a headset
What it is: Shows whether the headphones can handle voice chat and calls in addition to normal audio playback.
When it matters: When one pair needs to cover music, calls, meetings, and gaming chat.

Importance: MEDIUM

yes
Klim Fusion C is headset-ready, 84.7% is not. 15.3% of headphones can be used as headsets.
Number of microphones
What it is: Total number of built-in microphones
When it matters: When call pickup quality and beamforming support matter to you.

Importance: LOW

Good value: >=2

1
Klim Fusion C has 1 microphones, more microphones than 25.9% of headphones and equal to 52.2% of headphones.
Boom microphone
What it is: Includes detachable boom microphone for voice clarity
When it matters: When you need stronger voice clarity for gaming, streaming, or work calls.

Importance: LOW

no
Klim Fusion C does not include a boom microphone. 15.6% of headphones have a boom microphone.
Microphone SNR
What it is: Signal-to-noise ratio of the microphone
When it matters: When call clarity matters and you want your voice picked up more cleanly instead of buried in background hiss.

Importance: LOW

Good value: >80 dB

?
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Connectivity
What it is: Available connection methods (wired, wireless, Bluetooth, etc.)
When it matters: When the headphones need to match how you listen across wired and wireless devices.

Importance: HIGH

wired
Klim Fusion C supports wired connectivity, equal to 52.6% of headphones.
Bluetooth version
What it is: Version of Bluetooth technology supported
When it matters: When wireless stability, efficiency, and feature support matter more than treating Bluetooth as a box-check spec.

Importance: MEDIUM

Good value: >=5.0

N/A
Maximum Bluetooth range
What it is: Maximum wireless operating distance from source device
When it matters: When you move around rooms and want fewer dropouts from your source device.

Importance: LOW

Good value: >=10 m

N/A
Audio latency
What it is: Delay between audio and video in wireless mode
When it matters: When you watch video or play games and need sound to stay in sync.

Importance: HIGH

Good value: <60 ms

90 ms
Klim Fusion C has audio latency of 90 ms, lower audio latency than 53.5% of headphones and equal to 0.2% of headphones.
Multipoint support
What it is: Supports simultaneous connections to multiple devices
When it matters: When you switch often between a phone and a laptop during the day.

Importance: MEDIUM

N/A
Show more
Ambient sound mode
What it is: Allows external sounds to pass through for awareness
When it matters: When you need to stay aware of traffic, voices, or announcements.

Importance: MEDIUM

N/A
EQ support
What it is: Allows customization of sound profile via equalizer
When it matters: When the stock tuning is not enough and you want to shape bass, mids, or treble to match your taste.

Importance: MEDIUM

no
Klim Fusion C does not support EQ customization. 23.3% of headphones support EQ.
Companion app
What it is: Dedicated mobile app for customization and updates
When it matters: When software customization, updates, and extra controls matter.

Importance: MEDIUM

N/A
Adjustable ANC levels
What it is: Allows adjustment of noise cancellation intensity levels
When it matters: When you move between quiet rooms, offices, streets, and public transport and do not want one ANC setting for every situation.

Importance: LOW

Good value: >=4

N/A
Voice assistant support
What it is: Compatible with voice assistants like Siri, Alexa, or Google Assistant
When it matters: When hands-free control is part of your daily routine.

Importance: LOW

yes
Klim Fusion C supports voice assistants. 39.2% of headphones support voice assistants.
Show more
Battery life
What it is: Playback time on a single charge
When it matters: When you commute, travel, or work long shifts and do not want charging breaks to interrupt listening.

Importance: HIGH

Good value: >45 hours

N/A
Battery life with ANC
What it is: Playback time with active noise cancellation enabled
When it matters: When you plan to keep noise cancellation on for most of the day.

Importance: HIGH

Good value: >40 hours

N/A
Charging time
What it is: Time required for a full battery charge
When it matters: When you often need the headphones ready again after short breaks.

Importance: MEDIUM

Good value: <=2 hours

N/A
Quick charge
What it is: Provides quick playback time with short charging period
When it matters: When a short top-up needs to deliver useful playback before you leave.

Importance: MEDIUM

N/A
Battery capacity
What it is: Total energy storage of the internal battery
When it matters: When you are estimating how much battery headroom the design may have before relying only on the official runtime claim.

Importance: MEDIUM

Good value: >=720 mAh

N/A
Show more
Brand name
What it is: The manufacturer or brand of the product.
When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

Klim
Form factor
What it is: Overall design type of the headphones (over-ear, on-ear, in-ear, etc.)
When it matters: When comfort, portability, and isolation depend on the overall headphone style.

Importance: HIGH

in-ear
Weight
What it is: Total weight of the headphones
When it matters: When long listening sessions make wearing comfort more important.

Importance: MEDIUM

Good value: <150 g

19 g
Klim Fusion C weighs 19 g, lighter than 86.1% of headphones and equal to 0.2% of headphones.
Acoustic design
What it is: Type of acoustic design (open-back, closed-back, semi-open)
When it matters: When you need the right balance of isolation, leakage, and soundstage.

Importance: HIGH

closed-back
Clamp force
What it is: Amount of clamping pressure applied to the head
When it matters: When comfort and fit security matter during long sessions.

Importance: MEDIUM

N/A
Show more

Klim Fusion C vs the average headphone

  • 91.3% lower weight
    Klim Fusion C is lighter than the average headphone (19 g vs 218 g). The average pair of headphones weighs 218 g.
    What it is: Total weight of the headphones
    When it matters: When long listening sessions make wearing comfort more important.

    Importance: MEDIUM

    Good value: <150 g

    Klim Fusion C is lighter than the average headphone (19 g vs 218 g). The average pair of headphones weighs 218 g.19 g vs 218 g
  • Clear call microphone
    Klim Fusion C offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
    What it is: Built-in microphone reduces background noise during calls
    When it matters: When you take calls in busy spaces and want your voice to stay clearer.

    Importance: MEDIUM

    Klim Fusion C offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
  • In-line controls
    Klim Fusion C includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
    What it is: Controls available on in-line remote of wired cable
    When it matters: When your wired setup depends on cable-mounted buttons or call controls.

    Importance: LOW

    Klim Fusion C includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
  • USB-C charging
    Klim Fusion C uses USB-C charging, the average headphone does not. 29.4% of headphones use USB Type-C.
    What it is: Uses USB-C connector for charging or data
    When it matters: When you want to charge with the same cable family used by your phone, tablet, laptop, or other daily devices.

    Importance: LOW

    Klim Fusion C uses USB-C charging, the average headphone does not. 29.4% of headphones use USB Type-C.
  • Quick mic mute
    Klim Fusion C includes a quick mic mute, the average headphone does not. 33.5% of headphones support a mute function.
    What it is: Ability to mute microphone during calls
    When it matters: When you need to silence the mic quickly during meetings or multiplayer games.

    Importance: LOW

    Klim Fusion C includes a quick mic mute, the average headphone does not. 33.5% of headphones support a mute function.
  • 4.5x cheaper
    Klim Fusion C is cheaper than the average headphone (£20 vs £90).
    Klim Fusion C is cheaper than the average headphone (£20 vs £90).£20 vs £90
  • 3 Hz lower bass extension
    Klim Fusion C has a lower lowest frequency than the average headphone (15 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
    What it is: Lowest audio frequency the headphones can reproduce
    When it matters: When deeper bass extension matters for your music or movie listening.

    Importance: MEDIUM

    Good value: <=10 Hz

    Klim Fusion C has a lower lowest frequency than the average headphone (15 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.15 Hz vs 18 Hz
  • 91.3% lower weight
    Klim Fusion C is lighter than the average headphone (19 g vs 218 g). The average pair of headphones weighs 218 g.
  • 3 Hz lower bass extension
    Klim Fusion C has a lower lowest frequency than the average headphone (15 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
  • USB-C charging
    Klim Fusion C uses USB-C charging, the average headphone does not. 29.4% of headphones use USB Type-C.
  • Clear call microphone
    Klim Fusion C offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
  • In-line controls
    Klim Fusion C includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
  • Quick mic mute
    Klim Fusion C includes a quick mic mute, the average headphone does not. 33.5% of headphones support a mute function.

Total
Overall
Design
Sound
Battery
Calls & Controls
  • Fixed cable
    Klim Fusion C has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • 31 mm smaller driver size
    Klim Fusion C has smaller driver size than the average headphone (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
  • 4 dB/mW lower sensitivity
    Klim Fusion C has a lower sensitivity than the average headphone (98 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
  • No neodymium magnet
    Klim Fusion C does not use neodymium magnets, the average headphone does. 77.4% of headphones use neodymium magnets.
  • 5 dB SPL lower sound pressure level
    Klim Fusion C has a lower sound pressure level than the average headphone (98 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
  • 31 mm smaller driver size
    Klim Fusion C has smaller driver size than the average headphone (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    What it is: Diameter of the speaker driver unit
    When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.

    Importance: MEDIUM

    Klim Fusion C has smaller driver size than the average headphone (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.9 mm vs 40 mm
  • Fixed cable
    Klim Fusion C has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
    What it is: Cable can be removed or replaced
    When it matters: When you care about easier cable replacement, simpler storage, or the option to swap to shorter, longer, or upgraded leads.

    Importance: MEDIUM

    Klim Fusion C has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • 4 dB/mW lower sensitivity
    Klim Fusion C has a lower sensitivity than the average headphone (98 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
    What it is: Sound pressure output level per unit of input power
    When it matters: When you plan to use weaker sources like phones, handhelds, or entry-level dongles and still want enough volume.

    Importance: MEDIUM

    Good value: >=106 dB/mW

    Klim Fusion C has a lower sensitivity than the average headphone (98 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.98 dB/mW vs 102 dB/mW
  • 4.65x less popular
    Klim Fusion C is less popular than the average headphone (1.00 vs 4.646).
    What it is: An indicator based on the number of reviews received by the headphones.
    When it matters: When you prefer headphones that have already been chosen and reviewed by many other users.
    Klim Fusion C is less popular than the average headphone (1.00 vs 4.646).1 vs 4.65
  • No neodymium magnet
    Klim Fusion C does not use neodymium magnets, the average headphone does. 77.4% of headphones use neodymium magnets.
    What it is: Uses neodymium magnets for stronger, clearer sound
    When it matters: When driver construction details are part of how you compare sound hardware.

    Importance: LOW

    Klim Fusion C does not use neodymium magnets, the average headphone does. 77.4% of headphones use neodymium magnets.
  • 5 dB SPL lower sound pressure level
    Klim Fusion C has a lower sound pressure level than the average headphone (98 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
    What it is: Output loudness level of the headphones, usually measured in dB. It helps compare how loud a model can play under similar conditions.
    When it matters: When you need a rough idea of how loud the headphones can get before you pair them with a weaker source.

    Importance: LOW

    Good value: >=108 dB SPL

    Klim Fusion C has a lower sound pressure level than the average headphone (98 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.98 dB SPL vs 103 dB SPL
  • 3.7% worse value for money
    Klim Fusion C has worse value for money than the average headphone (6.49 vs 6.736).
    What it is: An indicator that combines the headphones' overall rating with their cost.
    When it matters: When you are looking for headphones that offer a strong balance of performance, features, and price.
    Klim Fusion C has worse value for money than the average headphone (6.49 vs 6.736).6.49 vs 6.74
Total
Overall
Design
Sound

Graphic comparison of Klim Fusion C and

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Third-party reviews

What customers like about Klim Fusion C?

  • Excellent value for money in the budget price range
  • Highly comfortable fit due to included memory foam ear tips
  • Strong bass performance often compared to more expensive brands
  • Good passive noise isolation provided by the memory foam seal
  • Generous long-term support with a 5-year warranty
  • Useful magnetized earbuds to prevent tangling and allow wearing around the neck
  • Comes with a variety of accessories including extra tips and a carrying pouch

What customers dislike about Klim Fusion C?

  • Mixed reports on long-term durability with some units failing after a few months
  • Sound profile can be perceived as too 'bassy' or 'muddy' for some listeners
  • The cable is prone to tangling despite the magnetic buds
  • In-line microphone quality is basic and not suitable for professional use
  • The USB-C connection may have compatibility issues with certain Android devices
  • Analogue volume slider can be imprecise or accidentally moved

Expert reviews

H
headphonedungeon.com
23/12/2020
Strauss & Wagner EM205 vs KLIM Fusion Comparison Review

The Strauss & Wagner EM205 earbuds outperform the KLIM Fusion in overall fit and sound performance despite having a cheaper and more limited unboxing experience. The KLIM Fusion offers a highly organized presentation, a hard carrying case, and four pairs of extra ear tips. It also includes a unique magnetic design to keep the earpieces together and prevent tangling. However, the...Read more

G
gbatemp.net
16/03/2019
Klim Fusion Earphones Review (Hardware)

The GBAtemp review of the Klim Fusion Earphones highlights a comfortable design, featuring memory foam tips that offer excellent passive noise isolation at a $20 price point. However, the audio profile is heavily biased toward low frequencies, resulting in muddy sound for music and dialogue that drowns out higher frequencies. While suitable for gaming, the earphones feature a...Read more

Video reviews

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