OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Headphones Methodology v1.0
Headphones Methodology v1.0
Mathematical & Unbiased Scoring
Products in this category are evaluated mathematically under Frontumo Headphones Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
Explore Headphones Methodology v1.0

Klim Fusion Review | 93 Data compared

Avg. price:~£20Form factor:in-earConnectivity:wiredBattery life:N/A hoursActive noise cancellation (ANC):no

Klim Fusion Review: Compare 93 technical specifications and user reviews to see how this product ranks in the Headphones category and whether it is worth buying.

6.4

Overall score

Score
6.4/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 59% of models
Score components

80%

5.8

Technical score

20%

8.7

User score

â–²Better than 59% of headphones
5.8

Technical score

Technical score
5.8/ 10
✕
What it is
An assessment of technical performance for products in the Headphones category across these key areas: Sound, Calls & Controls, Connectivity, Features, Battery, Design.
When it matters
When you want to compare headphones based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 55% of models
Score components

52%

5.6

Sound

20%

4.4

Features

10%

7.2

Design

8%

5.7

Connectivity

6%

8.6

Battery

4%

8.0

Calls & Controls

â–¼Worse than 55% of headphones
8.7

User score

User score
8.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 88% of models
Score components

70%

8.2

User ratings

30%

10

Number of reviews

Based on 101,794 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–²Better than 88% of headphones
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Best prices

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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 pair of headphones Klim Fusion

Technical score
Technical score
5.8/ 10
✕
What it is
An assessment of technical performance for products in the Headphones category across these key areas: Sound, Calls & Controls, Connectivity, Features, Battery, Design.
When it matters
When you want to compare headphones based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 55% of models
Score components:

52%

5.6

Sound

20%

4.4

Features

10%

7.2

Design

8%

5.7

Connectivity

6%

8.6

Battery

4%

8.0

Calls & Controls

5.8
User score
User score
8.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 88% of models
Score components

70%

8.2

User ratings

30%

10

Number of reviews

Based on 101,794 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
8.7
Popularity
Popularity
10.0/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 92% of models
Popularity:
Klim Fusion has a popularity score of 10 points, which is higher than that of 91.9% of products in this category.
10
Value for money
Value for money
7.5/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 61% of models
Score components:

60%

6.4

Overall score

40%

10

Price

7.5
Active noise cancellation (ANC)
no
Active noise cancellation (ANC)
no
â–¼ Worse than 27% of models
This pair of headphones does not support active noise cancellation. 27.5% of headphones support active noise cancellation.
Driver type
dynamic
Driver size
9 mm
Driver size
9 mm
â–¼ Worse than 92% of models
Market range: <10 mm – >50 mm
This pair of headphones 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
1
Number of drivers
1
â–¼ Worse than 4% of models
Market range: <1 – >4
This pair of headphones uses 1 drivers, fewer drivers than 4% of headphones and equal to 96% of headphones.
Lowest frequency
15 Hz
Lowest frequency
15 Hz
â–² Better than 58% of models
Market range: <5 Hz – >20 Hz
This pair of headphones reaches a lowest frequency of 15 Hz, lower lowest frequency than 58.3% of headphones and equal to 5.8% of headphones.
Show more
Noise-canceling microphone
yes
Noise-canceling microphone
yes
â–² Better than 61% of models
This pair of headphones supports a noise-canceling microphone. 61.1% of headphones support noise-canceling microphones.
Can be used as a headset
yes
Can be used as a headset
yes
â–² Better than 15% of models
This pair of headphones is headset-ready, 84.8% is not. 15.2% of headphones can be used as headsets.
Number of microphones
1
Number of microphones
1
â–² Better than 27% of models
Market range: <0 – >4
This pair of headphones has 1 microphones, more microphones than 26.9% of headphones and equal to 50.9% of headphones.
Boom microphone
yes
Boom microphone
yes
â–² Better than 87% of models
This pair of headphones includes a boom microphone. 86.5% of headphones have a boom microphone.
Microphone SNR
?
Show more
Connectivity
wired
Connectivity
wired
â–¼ Worse than 49% of models
This pair of headphones supports wired connectivity, less flexible connectivity than 49.2% of headphones and equal to 50.8% of headphones.
Bluetooth version
5
Bluetooth version
5
â–² Better than 71% of models
This pair of headphones uses Bluetooth version 5, newer Bluetooth version than 70.9% of headphones and equal to 13.1% of headphones.
Maximum Bluetooth range
N/A
Audio latency
90 ms
Audio latency
90 ms
â–² Better than 57% of models
Market range: <40 ms – >222 ms
This pair of headphones has audio latency of 90 ms, lower audio latency than 56.7% of headphones and equal to 0.3% of headphones.
Multipoint support
no
Multipoint support
no
â–¼ Worse than 31% of models
This pair of headphones does not support multipoint. 30.6% of headphones support multipoint.
Show more
Ambient sound mode
no
Ambient sound mode
no
â–¼ Worse than 25% of models
This pair of headphones does not offer ambient sound mode. 24.9% of headphones support ambient sound mode.
EQ support
no
EQ support
no
â–¼ Worse than 23% of models
This pair of headphones does not support EQ customization. 23.2% of headphones support EQ.
Companion app
no
Companion app
no
â–¼ Worse than 22% of models
This pair of headphones does not work with a companion app. 21.6% of headphones support companion apps.
Adjustable ANC levels
N/A
Voice assistant support
yes
Voice assistant support
yes
â–² Better than 39% of models
This pair of headphones supports voice assistants. 39.2% of headphones support voice assistants.
Show more
Battery life
N/A
Battery life with ANC
N/A
Charging time
N/A
Quick charge
yes
Quick charge
yes
â–² Better than 67% of models
This pair of headphones supports quick charge. 67% of headphones support quick charge.
Battery capacity
N/A
Show more
Brand name
Klim
Form factor
in-ear
Weight
20 g
Weight
20 g
â–² Better than 85% of models
Market range: <14 g – >340 g
This pair of headphones weighs 20 g, lighter than 85% of headphones and equal to 0.9% of headphones.
Acoustic design
closed-back
Clamp force
N/A
Show more

Klim Fusion vs the average pair of headphones

246810TotalDesignSoundBatteryConnectivityCalls & ControlsFeatures
  • 90.8% lower weight
    Weight
    20 g
    â–² Better than 85% of models
    Market range: <14 g – >340 g
    This pair of headphones is lighter than the average pair of headphones (20 g vs 218 g). The average pair of headphones weighs 218 g.
    20 g vs 218 g
  • Clear call microphone
    Noise-canceling microphone
    yes
    â–² Better than 61% of models
    This pair of headphones offers a clear call microphone, while the average pair of headphones does not. 39% of headphones support noise-canceling microphones.
  • AptX Adaptive support
    aptX Adaptive
    yes
    ★ Better than 93% of models
    This pair of headphones supports aptX Adaptive, the average pair of headphones does not. 6.7% of headphones support aptX Adaptive.
  • Direct 3.5 mm plug
    Has a 3.5mm male connector
    yes
    â–² Better than 60% of models
    This pair of headphones includes a direct 3.5 mm plug, the average pair of headphones does not. 39.8% of headphones have a 3.5 mm male connector.
  • Quick charge support
    Quick charge
    yes
    â–² Better than 67% of models
    This pair of headphones supports quick charge, the average pair of headphones does not. 33% of headphones support quick charge.
  • In-line controls
    In-line controls
    yes
    â–² Better than 63% of models
    This pair of headphones includes in-line controls, the average pair of headphones does not. 36.6% of headphones support in-line controls.
  • 0.2 % lower distortion
    THD (Total Harmonic Distortion)
    0.1 %
    â–² Better than 65% of models
    Market range: <0.08 % – >3 %
    This pair of headphones has a lower total harmonic distortion than the average pair of headphones (0.1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    0.1 % vs 0.3 %
  • USB-C charging
    USB Type-C
    yes
    â–² Better than 71% of models
    This pair of headphones uses USB-C charging, the average pair of headphones does not. 29.5% of headphones use USB Type-C.
  • 4.5x cheaper
    Klim Fusion is cheaper than the average pair of headphones (£20 vs £90).
    £20 vs £90
  • 70.4% more popular
    Klim Fusion is more popular than the average pair of headphones (10 vs 5.9).
    10 vs 5.87
  • 9.3% higher user score
    User score
    8.7/ 10
    ✕
    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 distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Klim Fusion
    the average pair of headphones
    Klim Fusion has a higher user score than the average pair of headphones (8.75 vs 8.000).
    8.75 vs 8
  • 90.8% lower weight
    Weight
    20 g
    â–² Better than 85% of models
    Market range: <14 g – >340 g
    This pair of headphones is lighter than the average pair of headphones (20 g vs 218 g). The average pair of headphones weighs 218 g.
    20 g vs 218 g
  • 0.2 % lower distortion
    THD (Total Harmonic Distortion)
    0.1 %
    â–² Better than 65% of models
    Market range: <0.08 % – >3 %
    This pair of headphones has a lower total harmonic distortion than the average pair of headphones (0.1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    0.1 % vs 0.3 %
  • 3 Hz lower bass extension
    Lowest frequency
    15 Hz
    â–² Better than 58% of models
    Market range: <5 Hz – >20 Hz
    This pair of headphones has a lower lowest frequency than the average pair of headphones (15 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
    15 Hz vs 18 Hz
  • Quick charge support
    Quick charge
    yes
    â–² Better than 67% of models
    This pair of headphones supports quick charge, the average pair of headphones does not. 33% of headphones support quick charge.
  • USB-C charging
    USB Type-C
    yes
    â–² Better than 71% of models
    This pair of headphones uses USB-C charging, the average pair of headphones does not. 29.5% of headphones use USB Type-C.
  • AptX Adaptive support
    aptX Adaptive
    yes
    ★ Better than 93% of models
    This pair of headphones supports aptX Adaptive, the average pair of headphones does not. 6.7% of headphones support aptX Adaptive.
  • Direct 3.5 mm plug
    Has a 3.5mm male connector
    yes
    â–² Better than 60% of models
    This pair of headphones includes a direct 3.5 mm plug, the average pair of headphones does not. 39.8% of headphones have a 3.5 mm male connector.
  • 60 ms lower audio latency
    Audio latency
    90 ms
    â–² Better than 57% of models
    Market range: <40 ms – >222 ms
    This pair of headphones has a lower audio latency than the average pair of headphones (90 ms vs 150 ms). The average headphones have audio latency of 150 ms.
    90 ms vs 150 ms
  • Low-latency game mode
    Low-latency game mode
    yes
    â–² Better than 79% of models
    This pair of headphones includes a low-latency game mode, the average pair of headphones does not. 21.2% of headphones support low-latency game mode.
  • Clear call microphone
    Noise-canceling microphone
    yes
    â–² Better than 61% of models
    This pair of headphones offers a clear call microphone, while the average pair of headphones does not. 39% of headphones support noise-canceling microphones.
  • In-line controls
    In-line controls
    yes
    â–² Better than 63% of models
    This pair of headphones includes in-line controls, the average pair of headphones does not. 36.6% of headphones support in-line controls.
  • Quick mic mute
    Mute function
    yes
    â–² Better than 71% of models
    This pair of headphones includes a quick mic mute, the average pair of headphones does not. 29.3% of headphones support a mute function.
  • Boom microphone included
    Boom microphone
    yes
    â–² Better than 87% of models
    This pair of headphones includes a boom microphone, the average pair of headphones does not. 13.5% of headphones have a boom microphone.
  • 31 mm smaller driver size
    Driver size
    9 mm
    â–¼ Worse than 92% of models
    Market range: <10 mm – >50 mm
    This pair of headphones has smaller driver size than the average pair of headphones (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    9 mm vs 40 mm
  • Non-replaceable earpads
    Replaceable earpads
    no
    â–¼ Worse than 76% of models
    This pair of headphones has non-replaceable earpads, while the average pair of headphones has replaceable ones. 75.6% of headphones have replaceable earpads.
  • Fixed cable
    Detachable cable
    no
    â–¼ Worse than 62% of models
    This pair of headphones has a fixed cable, while the average pair of headphones has a detachable one. 62% of headphones have a detachable cable.
  • 4 dB/mW lower sensitivity
    Sensitivity
    98 dB/mW
    â–¼ Worse than 72% of models
    Market range: <94 dB/mW – >115 dB/mW
    This pair of headphones has a lower sensitivity than the average pair of headphones (98 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
    98 dB/mW vs 102 dB/mW
  • 5 dB SPL lower sound pressure level
    Sound pressure level
    98 dB SPL
    â–¼ Worse than 76% of models
    Market range: <94 dB SPL – >115 dB SPL
    This pair of headphones has a lower sound pressure level than the average pair of headphones (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
  • 95% lower input power handling
    Max input power
    5 mW
    â–¼ Worse than 94% of models
    Market range: <10 mW – >1.6k mW
    This pair of headphones has a lower max input power than the average pair of headphones (5 mW vs 100 mW). The average headphones handle max input power of 100 mW.
    5 mW vs 100 mW
  • Non-replaceable earpads
    Replaceable earpads
    no
    â–¼ Worse than 76% of models
    This pair of headphones has non-replaceable earpads, while the average pair of headphones has replaceable ones. 75.6% of headphones have replaceable earpads.
  • Fixed cable
    Detachable cable
    no
    â–¼ Worse than 62% of models
    This pair of headphones has a fixed cable, while the average pair of headphones has a detachable one. 62% of headphones have a detachable cable.
  • 31 mm smaller driver size
    Driver size
    9 mm
    â–¼ Worse than 92% of models
    Market range: <10 mm – >50 mm
    This pair of headphones has smaller driver size than the average pair of headphones (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    9 mm vs 40 mm
  • 4 dB/mW lower sensitivity
    Sensitivity
    98 dB/mW
    â–¼ Worse than 72% of models
    Market range: <94 dB/mW – >115 dB/mW
    This pair of headphones has a lower sensitivity than the average pair of headphones (98 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
    98 dB/mW vs 102 dB/mW
  • 95% lower input power handling
    Max input power
    5 mW
    â–¼ Worse than 94% of models
    Market range: <10 mW – >1.6k mW
    This pair of headphones has a lower max input power than the average pair of headphones (5 mW vs 100 mW). The average headphones handle max input power of 100 mW.
    5 mW vs 100 mW
  • 5 dB SPL lower sound pressure level
    Sound pressure level
    98 dB SPL
    â–¼ Worse than 76% of models
    Market range: <94 dB SPL – >115 dB SPL
    This pair of headphones has a lower sound pressure level than the average pair of headphones (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

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

G
gbatemp.net
16/03/2019
Summary of the review
Klim Fusion Earphones Review (Hardware) - GBAtemp
G
gamers-palace.de
31/10/2019
Summary of the review
KLIM Pods Review – Affordable True Wireless Earbuds (Reviewer notes 2.5 years of long-term use with the KLIM Fusion)
(Translated)Show original
H
hifi-lab.fr
06/12/2018
Summary of the review
KLIM Fusion Earbuds: Review and Test
(Translated)Show original
I
italia3dprint.it
05/09/2018
Summary of the review
KLIM Earphones Review", "KLIM Earbuds Review
(Translated)Show original
G
gamescore.it
20/10/2017
Summary of the review
KLIM Fusion - Gaming Earphones - Review - GameScore.it
(Translated)Show original
S
socialandtech.net
20/01/2017
Summary of the review
KLIM Fusion Earphones - SocialandTech
(Translated)Show original

Third-party reviews

Based on 101,794 buyer reviews from online shops.
Reviews last updated: June 2026 · How we calculate this
Read buyer reviews on Amazon →

What we like about Klim Fusion

  • Excellent value for the price point
  • High level of comfort provided by memory foam ear tips
  • Strong, punchy bass performance emphasized for gaming
  • Generous accessory bundle including multiple ear tips, carrying case, and PC splitter
  • Magnetic earbuds allow for convenient storage around the neck
  • Effective passive noise isolation due to the foam tip seal
  • Solid 5-year warranty policy from the manufacturer

What we don't like about Klim Fusion

  • Build quality receives mixed reviews, with some reporting early failure or breakage
  • Bass can be overpowering for some music genres, occasionally masking mids and highs
  • Memory foam tips are prone to discoloration and can be difficult to clean
  • Wired cable is very long, which is great for PC gaming but cumbersome for mobile/on-the-go use
  • Microphone quality is considered average or 'stumpf' (dull) and prone to echo
  • Cable is reported by some users to be prone to tangling despite manufacturer claims

Verdict

The KLIM Fusion is a durable, wired in-ear headset featuring 9 mm dynamic drivers that deliver a frequency range of 15 Hz to 21,000 Hz with a sensitivity of 118 dB and a low 16-ohm impedance for easy driving. Its main characteristics include high-quality metal construction, magnetic earbuds for tangle-free storage around the neck, and innovative memory foam tips that provide exceptional passive noise isolation and a personalized fit. Pros include a generous 5-year warranty, supreme comfort for long sessions, and a versatile in-line microphone with volume control compatible with PCs and mobile devices. However, some users have noted cons such as a slightly bass-heavy sound profile, a relatively basic microphone unsuitable for professional recording, and occasional long-term durability concerns regarding the audio jack or carrying case zipper.

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