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Cowin E9 Review | 93 Data compared

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  • Avg. price in UK: ~£95
  • Avg. price in US: ~$120
  • Form factor: over-ear
  • Connectivity: wireless
  • Battery life: 30 hours
  • Active noise cancellation (ANC): yes

Cowin E9 review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

6.3

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%

6.3

Technical Score

20.0%

?

User score

Good
6.3

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%

7.8

Sound

20.0%

2.4

Features

10.0%

6.5

Design

8.0%

6.1

Connectivity

6.0%

4.7

Battery

4.0%

7.8

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

  • 9.2
    Gaming

    Score components:

    35.0%

    9.0

    Audio latency

    25.0%

    10

    Low-latency game mode

    20.0%

    10

    Can be used as a headset

    12.0%

    10

    Noise-canceling microphone

    8.0%

    4.8

    Battery life

  • 6.0
    Travel

    Score components:

    28.0%

    10

    Active noise cancellation (ANC)

    24.0%

    4.8

    Battery life

    18.0%

    3.5

    Weight

    16.0%

    8.0

    Multipoint support

    14.0%

    1.0

    Ambient sound mode

  • 7.5
    Calls

    Score components:

    28.0%

    10

    Noise-canceling microphone

    24.0%

    10

    Can be used as a headset

    18.0%

    8.0

    Multipoint support

    16.0%

    4.8

    Battery life

    14.0%

    1.0

    Companion app

  • 6.1
    Workout

    Score components:

    28.0%

    3.5

    Weight

    24.0%

    10

    Water resistance

    20.0%

    4.0

    IP rating

    16.0%

    4.8

    Battery life

    12.0%

    10

    Can be used as a headset

  • No image
No image

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 Cowin E9 is an over-ear wireless headphone featuring advanced hybrid active noise cancellation (ANC) technology with a depth of -33dB and a five-microphone system for clear CVC HD calls. It is equipped with 40mm large-aperture drivers, Bluetooth 5.0 for stable connectivity up to 15 meters, and broad codec support including aptX, aptX HD, aptX Low Latency, and AAC for high-fidelity audio. Key pros include a substantial 30-hour battery life from an 800mAh battery, a comfortable foldable design with protein ear cushions, and a frequency response of 20Hz–20kHz. Notable cons include a relatively long charging time of approximately 4 hours and reports of potential long-term durability issues with the exterior coating and ear pads.

Technical Specifications of Cowin E9

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

6.3
Cowin E9 has a technical score of 6.25 points, which is higher than that of 74.2% 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
Cowin E9 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%

6.3

Overall score

40.0%

10

Price

7.4
Cowin E9 has a quality-to-price ratio of 7.4 points, which is higher than 72.4% 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

yes
Cowin E9 supports active noise cancellation. 72.6% 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

40 mm
Cowin E9 uses a driver size of 40 mm, larger driver size than 28.2% of headphones and equal to 53.6% 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
Cowin E9 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

20 Hz
Cowin E9 reaches a lowest frequency of 20 Hz, higher lowest frequency than 50.6% of headphones and equal to 47.5% of headphones.
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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
Cowin E9 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
Cowin E9 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

5
Cowin E9 has 5 microphones, more microphones than 93.3% of headphones and equal to 2.8% 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
Cowin E9 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

wireless
Cowin E9 supports wireless connectivity, more flexible connectivity than 52.6% of headphones and equal to 47.4% of headphones.
supports both wireless and wired connectivity.
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

5.0
Cowin E9 uses Bluetooth version 5.0, newer Bluetooth version than 70.9% of headphones and equal to 13% of headphones.
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

15 m
Cowin E9 offers a Bluetooth range of 15 m, higher Bluetooth range than 84.2% of headphones and equal to 6.2% of headphones.
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

?
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

?
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

no
Cowin E9 does not offer ambient sound mode. 76.9% of headphones support ambient sound mode.
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
Cowin E9 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

no
Cowin E9 does not work with a companion app. 44.4% of headphones support companion apps.
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
Cowin E9 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

30 hours
Cowin E9 offers battery life of 30 hours, higher battery life than 46% of headphones and equal to 10.5% of headphones.
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

30 hours
Cowin E9 offers battery life with ANC of 30 hours, higher battery life with ANC than 43.2% of headphones and equal to 8.8% of headphones.
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

4 hours
Cowin E9 needs 4 hours to charge, higher charging time than 90.5% of headphones and equal to 4.7% of headphones.
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

?
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

800 mAh
Cowin E9 has a battery capacity of 800 mAh, higher battery capacity than 74.7% of headphones and equal to 7.7% of headphones.
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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

Cowin
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

over-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

289.2 g
Cowin E9 weighs 289.2 g, heavier than 77.6% 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

?
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Cowin E9 vs the average headphone

  • Active noise cancellation
    Cowin E9 supports active noise cancellation, the average headphone does not. 27.4% of headphones support active noise cancellation.
    What it is: Reduces background noise using active technology
    When it matters: When blocking office, travel, or aircraft noise is a priority.

    Importance: HIGH

    Cowin E9 supports active noise cancellation, the average headphone does not. 27.4% of headphones support active noise cancellation.
  • More flexible connectivity
    Cowin E9 offers more flexible connectivity than the average headphone (wireless vs wired). The average headphones support wired connectivity.
    supports both wireless and wired 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

    Cowin E9 offers more flexible connectivity than the average headphone (wireless vs wired). The average headphones support wired connectivity.wireless vs wired
  • Clear call microphone
    Cowin E9 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

    Cowin E9 offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
  • On-device controls
    Cowin E9 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
    What it is: Physical controls available directly on headphones
    When it matters: When you need playback, volume, or call controls to be easy to reach without pulling out your phone.

    Importance: MEDIUM

    Cowin E9 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
  • 5 m longer Bluetooth range
    Cowin E9 has a higher Bluetooth range than the average headphone (15 m vs 10 m). The average headphones offer a Bluetooth range of 10 m.
    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

    Cowin E9 has a higher Bluetooth range than the average headphone (15 m vs 10 m). The average headphones offer a Bluetooth range of 10 m.15 m vs 10 m
  • 4 more microphones
    Cowin E9 has more microphones than the average headphone (5 vs 1). The average headphones have 1 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

    Cowin E9 has more microphones than the average headphone (5 vs 1). The average headphones have 1 microphones.5 vs 1
  • Wind noise reduction
    Cowin E9 reduces wind noise, the average headphone does not. 34.1% of headphones support wind noise reduction.
    What it is: Reduces wind interference for clearer outdoor calls
    When it matters: When you take calls outdoors while walking, cycling, or commuting.

    Importance: LOW

    Cowin E9 reduces wind noise, the average headphone does not. 34.1% of headphones support wind noise reduction.
  • Foldable design
    Cowin E9 has a foldable design, the average headphone does not. 61% of headphones are foldable.
    What it is: Earcups or headband can fold for compact storage
    When it matters: When you travel often and want easier storage in a bag.

    Importance: LOW

    Cowin E9 has a foldable design, the average headphone does not. 61% of headphones are foldable.
  • Foldable design
    Cowin E9 has a foldable design, the average headphone does not. 61% of headphones are foldable.
  • Water resistance
    Cowin E9 is water resistant, the average headphone is not. 20.2% of headphones are water resistant.
  • Active noise cancellation
    Cowin E9 supports active noise cancellation, the average headphone does not. 27.4% of headphones support active noise cancellation.
  • 33.3% higher battery capacity
    Cowin E9 has a higher battery capacity than the average headphone (800 mAh vs 600 mAh). The average headphones have a battery capacity of 600 mAh.
  • Rechargeable battery
    Cowin E9 has a rechargeable battery, the average headphone does not. 47.9% of headphones have a rechargeable battery.
  • Play while charging
    Cowin E9 can play while charging, the average headphone cannot. 55.9% of headphones support play while charging.
  • More flexible connectivity
    Cowin E9 offers more flexible connectivity than the average headphone (wireless vs wired). The average headphones support wired connectivity.
  • 5 m longer Bluetooth range
    Cowin E9 has a higher Bluetooth range than the average headphone (15 m vs 10 m). The average headphones offer a Bluetooth range of 10 m.
  • Clear call microphone
    Cowin E9 offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
  • On-device controls
    Cowin E9 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
  • 4 more microphones
    Cowin E9 has more microphones than the average headphone (5 vs 1). The average headphones have 1 microphones.
  • Wind noise reduction
    Cowin E9 reduces wind noise, the average headphone does not. 34.1% of headphones support wind noise reduction.

Total
Design
Sound
Battery
Connectivity
Calls & Controls
  • 32.7% higher weight
    Cowin E9 is heavier than the average headphone (289.2 g vs 218 g). The average pair of headphones weighs 218 g.
  • 0.7 % higher distortion
    Cowin E9 has a higher total harmonic distortion than the average headphone (1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
  • 2 Hz weaker bass extension
    Cowin E9 has a higher lowest frequency than the average headphone (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
  • 2 dB/mW lower sensitivity
    Cowin E9 has a lower sensitivity than the average headphone (100 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
  • 2 hours longer charging time
    Cowin E9 has a higher charging time than the average headphone (4 hours vs 2 hours). The average headphones need 2 hours to charge.
  • 2 hours longer charging time
    Cowin E9 has a higher charging time than the average headphone (4 hours vs 2 hours). The average headphones need 2 hours to charge.
    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

    Cowin E9 has a higher charging time than the average headphone (4 hours vs 2 hours). The average headphones need 2 hours to charge.4 hours vs 2 hours
  • 32.7% higher weight
    Cowin E9 is heavier than the average headphone (289.2 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

    Cowin E9 is heavier than the average headphone (289.2 g vs 218 g). The average pair of headphones weighs 218 g.289.2 g vs 218 g
  • 0.7 % higher distortion
    Cowin E9 has a higher total harmonic distortion than the average headphone (1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    What it is: Percentage of harmonic distortion in audio output
    When it matters: When cleaner sound reproduction matters at louder volumes.

    Importance: LOW

    Good value: <=1%

    Cowin E9 has a higher total harmonic distortion than the average headphone (1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.1 % vs 0.3 %
  • 2 Hz weaker bass extension
    Cowin E9 has a higher lowest frequency than the average headphone (20 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

    Cowin E9 has a higher lowest frequency than the average headphone (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.20 Hz vs 18 Hz
  • 4.65x less popular
    Cowin E9 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.
    Cowin E9 is less popular than the average headphone (1.00 vs 4.646).1 vs 4.65
  • 2 dB/mW lower sensitivity
    Cowin E9 has a lower sensitivity than the average headphone (100 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

    Cowin E9 has a lower sensitivity than the average headphone (100 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.100 dB/mW vs 102 dB/mW
Total
Overall
Design
Sound
Battery

Graphic comparison of Cowin E9 and

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Third-party reviews

What customers like about Cowin E9?

  • Improved Hybrid Active Noise Cancelling (ANC) that effectively blocks out engine, traffic, and office noise.
  • Superior sound quality with support for high-end audio codecs like aptX, aptX HD, and aptX Low Latency.
  • Exceptional comfort provided by upgraded protein ear pads and a lightweight, adjustable headband.
  • Long battery life offering up to 30 hours of playtime on a single charge.
  • Clear call quality using CVC HD noise-canceling microphones.
  • Excellent value for the price, often compared favorably to more expensive models.

What customers dislike about Cowin E9?

  • Long-term durability concerns, with some reports of the exterior coating tearing or parts breaking after several months.
  • Ear pads are not easily replaceable, requiring a difficult gluing process for third-party replacements.
  • Charging time is relatively slow at 4 hours compared to newer competitors.
  • Some users find them slightly less comfortable than the preceding SE7 model.
  • Potential for audio cutouts during vigorous physical activity like jumping or intense exercise.
  • The 30-hour battery life, while good, is surpassed by many modern alternatives in the same price range.

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