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Haylou S40 Review | 93 Data compared

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  • Avg. price in UK: ~£55
  • Avg. price in US: ~$50
  • Form factor: over-ear
  • Connectivity: wireless
  • Battery life: 90 hours
  • Active noise cancellation (ANC): yes

Haylou S40 review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

8.5

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%

8.6

Technical Score

20.0%

8.4

User score

Excellent
8.6

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%

9.2

Sound

20.0%

8.4

Features

10.0%

7.0

Design

8.0%

6.7

Connectivity

6.0%

8.8

Battery

4.0%

8.5

Calls & Controls

Excellent
8.4

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%

9.0

User reviews

30.0%

7.1

Popularity

User score:
United Kingdom
amazon
4.5
(294)
United States
Amazon_logo.png
4.5
(294)

(Reviews last updated: Jun 2026)

Excellent
  • 9.4
    Gaming

    Score components:

    35.0%

    8.3

    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%

    10

    Battery life

  • 8.9
    Travel

    Score components:

    28.0%

    10

    Active noise cancellation (ANC)

    24.0%

    10

    Battery life

    18.0%

    3.7

    Weight

    16.0%

    10

    Multipoint support

    14.0%

    10

    Ambient sound mode

  • 10
    Calls

    Score components:

    28.0%

    10

    Noise-canceling microphone

    24.0%

    10

    Can be used as a headset

    18.0%

    10

    Multipoint support

    16.0%

    10

    Battery life

    14.0%

    10

    Companion app

  • 7.8
    Workout

    Score components:

    28.0%

    3.7

    Weight

    24.0%

    9.0

    Water resistance

    20.0%

    9.0

    IP rating

    16.0%

    10

    Battery life

    12.0%

    10

    Can be used as a headset

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Best prices in UK

Best rankings

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

Verdict

The Haylou S40 is a wireless over-ear headset featuring a dual-driver system (40mm + 20mm titanium-plated) and Hi-Res Audio certification with LDAC support for high-fidelity sound. Key characteristics include advanced Bluetooth 6.0 connectivity, 360° spatial audio with head tracking, and a powerful hybrid ANC system capable of reducing ambient noise by up to 50dB. Its main pros are an exceptional battery life of up to 90 hours (60 hours with ANC), multipoint connection for two devices, and a detachable gaming-grade microphone. Some notable cons include a lack of a standard 3.5mm analogue jack (wired mode is limited to USB-C), a plastic build that lacks a premium feel, and the requirement of app registration for full feature access.

Technical Specifications of Haylou S40

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%

9.2

Sound

20.0%

8.4

Features

10.0%

7.0

Design

8.0%

6.7

Connectivity

6.0%

8.8

Battery

4.0%

8.5

Calls & Controls

8.6
Haylou S40 has a technical score of 8.57 points, which is higher than that of 98.8% 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%

9.0

User reviews

30.0%

7.1

Popularity

User score:
United Kingdom
amazon
4.5
(294)
United States
Amazon_logo.png
4.5
(294)

(Reviews last updated: Jun 2026)

8.4
Haylou S40 has a user score of 8.42 points, which is higher than that of 70.6% of products in this category.
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.
7.1
Haylou S40 has a popularity of 7.1 points, which is higher than 62.9% 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%

8.5

Overall score

40.0%

10

Price

9.0
Haylou S40 has a quality-to-price ratio of 9 points, which is higher than 99.1% 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
Haylou S40 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
Haylou S40 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

2
Haylou S40 uses 2 drivers, more drivers than 96% of headphones and equal to 2.5% 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
Haylou S40 reaches a lowest frequency of 20 Hz, higher lowest frequency than 50.6% of headphones and equal to 47.5% 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
Haylou S40 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
Haylou S40 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
Haylou S40 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

yes
Haylou S40 includes a boom microphone. 84.5% 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
Haylou S40 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

6.0
Haylou S40 uses Bluetooth version 6.0, newer Bluetooth version than 99.4% of headphones and equal to 0.6% 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

20 m
Haylou S40 offers a Bluetooth range of 20 m, higher Bluetooth range than 91.3% of headphones and equal to 2.8% 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

80 ms
Haylou S40 has audio latency of 80 ms, lower audio latency than 54.3% of headphones and equal to 4.8% 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

yes
Haylou S40 supports multipoint. 35% of headphones support multipoint.
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

yes
Haylou S40 supports ambient sound mode. 23.2% 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

yes
Haylou S40 supports EQ customization. 76.8% 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

yes
Haylou S40 works with a companion app. 55.7% 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

3
Haylou S40 offers 3 adjustable ANC levels, more adjustable ANC levels than 94.4% of headphones and equal to 2.8% of headphones.
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
Haylou S40 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

90 hours
Haylou S40 offers battery life of 90 hours, higher battery life than 95.1% of headphones and equal to 0.4% 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

60 hours
Haylou S40 offers battery life with ANC of 60 hours, higher battery life with ANC than 91.4% of headphones and equal to 3.8% 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

2.5 hours
Haylou S40 needs 2.5 hours to charge, higher charging time than 52.4% of headphones and equal to 12.9% 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

yes
Haylou S40 supports quick charge. 31% of headphones support quick charge.
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

650 mAh
Haylou S40 has a battery capacity of 650 mAh, higher battery capacity than 60.9% of headphones and equal to 1.7% 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

Haylou
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

280 g
Haylou S40 weighs 280 g, heavier than 73.1% of headphones and equal to 1.3% 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

2.1
Haylou S40 has a clamp force of 2.1, lower clamp force than 96.3% of headphones and equal to 0.2% of headphones.
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Haylou S40 vs the average headphone

  • Active noise cancellation
    Haylou S40 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

    Haylou S40 supports active noise cancellation, the average headphone does not. 27.4% of headphones support active noise cancellation.
  • Hi-Res Audio certification
    Haylou S40 has Hi-Res Audio certification, the average headphone does not. 22.9% of headphones are Hi-Res Audio certified.
    What it is: Certified for high-resolution audio playback
    When it matters: When official support for high-resolution playback matters to you.

    Importance: LOW

    Haylou S40 has Hi-Res Audio certification, the average headphone does not. 22.9% of headphones are Hi-Res Audio certified.
  • EQ customization
    Haylou S40 supports EQ customization, the average headphone does not. 23.3% of headphones support EQ.
    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

    Haylou S40 supports EQ customization, the average headphone does not. 23.3% of headphones support EQ.
  • Spatial audio support
    Haylou S40 supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
    What it is: Supports immersive surround sound playback
    When it matters: When movies, games, and immersive mixes are part of your listening.

    Importance: MEDIUM

    Haylou S40 supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
  • 60 hours longer battery life
    Haylou S40 has a higher battery life than the average headphone (90 hours vs 30 hours). The average headphones offer battery life of 30 hours.
    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

    Haylou S40 has a higher battery life than the average headphone (90 hours vs 30 hours). The average headphones offer battery life of 30 hours.90 hours vs 30 hours
  • 30 hours longer ANC battery life
    Haylou S40 has a higher battery life with ANC than the average headphone (60 hours vs 30 hours). The average headphones offer battery life with ANC of 30 hours.
    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

    Haylou S40 has a higher battery life with ANC than the average headphone (60 hours vs 30 hours). The average headphones offer battery life with ANC of 30 hours.60 hours vs 30 hours
  • More flexible connectivity
    Haylou S40 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

    Haylou S40 offers more flexible connectivity than the average headphone (wireless vs wired). The average headphones support wired connectivity.wireless vs wired
  • Clear call microphone
    Haylou S40 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

    Haylou S40 offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
  • 2.2 lower clamp force
    Haylou S40 has a lower clamp force than the average headphone (2.1 vs 4.3). The average headphones have a clamp force of 4.3.
  • Foldable design
    Haylou S40 has a foldable design, the average headphone does not. 61% of headphones are foldable.
  • 7 mm more spacious earcup width
    Haylou S40 offers more spacious earcup width than the average headphone (50 mm vs 43 mm). The average headphones offer an inner earcup width of 43 mm.
  • Active noise cancellation
    Haylou S40 supports active noise cancellation, the average headphone does not. 27.4% of headphones support active noise cancellation.
  • Hi-Res Audio certification
    Haylou S40 has Hi-Res Audio certification, the average headphone does not. 22.9% of headphones are Hi-Res Audio certified.
  • Spatial audio support
    Haylou S40 supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
  • 60 hours longer battery life
    Haylou S40 has a higher battery life than the average headphone (90 hours vs 30 hours). The average headphones offer battery life of 30 hours.
  • 30 hours longer ANC battery life
    Haylou S40 has a higher battery life with ANC than the average headphone (60 hours vs 30 hours). The average headphones offer battery life with ANC of 30 hours.
  • USB-C charging
    Haylou S40 uses USB-C charging, the average headphone does not. 29.4% of headphones use USB Type-C.
  • Rechargeable battery
    Haylou S40 has a rechargeable battery, the average headphone does not. 47.9% of headphones have a rechargeable battery.
  • More flexible connectivity
    Haylou S40 offers more flexible connectivity than the average headphone (wireless vs wired). The average headphones support wired connectivity.
  • 10 m longer Bluetooth range
    Haylou S40 has a higher Bluetooth range than the average headphone (20 m vs 10 m). The average headphones offer a Bluetooth range of 10 m.
  • 47.5 ms lower audio latency
    Haylou S40 has a lower audio latency than the average headphone (80 ms vs 127.5 ms). The average headphones have audio latency of 127.5 ms.
  • Clear call microphone
    Haylou S40 offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
  • On-device controls
    Haylou S40 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
  • 4 more microphones
    Haylou S40 has more microphones than the average headphone (5 vs 1). The average headphones have 1 microphones.
  • Wind noise reduction
    Haylou S40 reduces wind noise, the average headphone does not. 34.1% of headphones support wind noise reduction.
  • Sidetone support
    Haylou S40 supports sidetone, the average headphone does not. 29.7% of headphones support sidetone.
  • Boom microphone included
    Haylou S40 includes a boom microphone, the average headphone does not. 15.6% of headphones have a boom microphone.
  • EQ customization
    Haylou S40 supports EQ customization, the average headphone does not. 23.3% of headphones support EQ.
  • 8 newer release date
    Haylou S40 was released more recently than the average headphone (2,025 vs 2,017). The average headphones were released in 2,017.

Total
Overall
Design
Sound
Battery
Connectivity
Calls & Controls
Features
  • 28.4% higher weight
    Haylou S40 is heavier than the average headphone (280 g vs 218 g). The average pair of headphones weighs 218 g.
  • No travel bag
    Haylou S40 does not include a travel bag, the average headphone does. 65.2% of headphones include a travel bag.
  • 5 dB/mW lower sensitivity
    Haylou S40 has a lower sensitivity than the average headphone (97 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
  • 2 Hz weaker bass extension
    Haylou S40 has a higher lowest frequency than the average headphone (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
  • 1 fewer drivers
    Haylou S40 has fewer drivers than the average headphone (2 vs 1). The average headphones use 1 drivers.
  • 6 dB SPL lower sound pressure level
    Haylou S40 has a lower sound pressure level than the average headphone (97 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
  • 0.5 hours longer charging time
    Haylou S40 has a higher charging time than the average headphone (2.5 hours vs 2 hours). The average headphones need 2 hours to charge.
  • 28.4% higher weight
    Haylou S40 is heavier than the average headphone (280 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

    Haylou S40 is heavier than the average headphone (280 g vs 218 g). The average pair of headphones weighs 218 g.280 g vs 218 g
  • 0.5 hours longer charging time
    Haylou S40 has a higher charging time than the average headphone (2.5 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

    Haylou S40 has a higher charging time than the average headphone (2.5 hours vs 2 hours). The average headphones need 2 hours to charge.2.5 hours vs 2 hours
  • 5 dB/mW lower sensitivity
    Haylou S40 has a lower sensitivity than the average headphone (97 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

    Haylou S40 has a lower sensitivity than the average headphone (97 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.97 dB/mW vs 102 dB/mW
  • 2 Hz weaker bass extension
    Haylou S40 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

    Haylou S40 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
  • No travel bag
    Haylou S40 does not include a travel bag, the average headphone does. 65.2% of headphones include a travel bag.
    What it is: Comes with a protective carrying case or pouch
    When it matters: When protection in transit matters right out of the box.

    Importance: LOW

    Haylou S40 does not include a travel bag, the average headphone does. 65.2% of headphones include a travel bag.
  • 6 dB SPL lower sound pressure level
    Haylou S40 has a lower sound pressure level than the average headphone (97 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

    Haylou S40 has a lower sound pressure level than the average headphone (97 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.97 dB SPL vs 103 dB SPL
  • 1 fewer drivers
    Haylou S40 has fewer drivers than the average headphone (2 vs 1). The average headphones use 1 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

    Haylou S40 has fewer drivers than the average headphone (2 vs 1). The average headphones use 1 drivers.2 vs 1
Total
Design
Sound
Battery

Graphic comparison of Haylou S40 and

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Third-party reviews

United Kingdom
amazon
4.5
294 Reviews
United States
Amazon_logo.png
4.5
294 Reviews

(Reviews last updated: Jun 2026)

What customers like about Haylou S40?

  • Exceptional battery life of up to 90 hours (60 hours with ANC enabled).
  • High-quality audio performance for the price, featuring Hi-Res Wireless certification and LDAC support.
  • Effective hybrid active noise cancellation (ANC) that filters out consistent low-frequency sounds.
  • Very comfortable and lightweight design, suitable for long sessions and eyeglass wearers.
  • Includes a versatile detachable microphone in addition to the built-in microphone array.
  • Advanced Bluetooth 6.0 connectivity and multipoint pairing for two devices.

What customers dislike about Haylou S40?

  • ANC is not as powerful as premium flagship models and may struggle with high-frequency voices.
  • No traditional 3.5mm analogue audio jack (wired connection is USB-C only).
  • The companion app requires user registration and includes marketing content.
  • The touch-sensitive controls can be overly sensitive, leading to accidental inputs.
  • Spatial audio mode can sometimes degrade overall sound clarity or shift the audio balance.

Expert reviews

G
gagadget.com
04/08/2025
Haylou S40 ANC review: affordable headphones with Spatial Audio and active noise cancellation

The Haylou S40 ANC over-ear headphones deliver impressive sound quality and advanced features for an affordable $60 price point. A major highlight is the dual-driver setup—featuring a 40mm and a 20mm driver—which provides clear treble detail and organic bass performance. The headphones are highly praised for their standout features, including impressive Spatial Audio with...Read more

A
audioreviews.org
24/12/2025
HAYLOU S40 Hybrid Active Noise Cancelling Headphones Review (2)", "HAYLOU S40 Hybrid ANC Headphones Review (2)

The AudioReviews.org review of the Haylou S40 describes the sub-$100 ANC headphones as comfortable with a warm, smooth sound produced by dual drivers. Key pros include exceptional comfort, a rich-textured midrange, and a customizable sound that offers deep, voluminous bass when using the app's EQ, according to the review. However, the review notes significant cons, specifically the...Read more

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audioreviews.org
09/12/2025
Haylou S40 TWS Headphones With ANC Review

The AudioReviews.org review by JK identifies the sub-$100 Haylou S40Go as an exceptionally comfortable over-ear headphone with an ergonomic design reminiscent of the Bose QuietComfort Ultra. Performance-wise, the reviewer highlights engaging audio with strong midrange transparency, deep acoustic staging, and functional active noise cancellation, making it a high-value option....Read more

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gagadget.de
04/08/2025
Haylou S40 ANC Review: Budget Headphones with Spatial Audio and Active Noise Cancellation

The Haylou S40 ANC is a budget-friendly, closed-back wireless headphone priced at around $60–$63 that stands out by offering features typically found in premium models. It utilizes a unique dual-driver audio engineering design—combining a 40mm and a 20mm titanium driver—which enhances high-frequency detail while keeping the bass organic and balanced. The headphones are Hi-Res Audio...Read more

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zdnet.fr
15/01/2026
Haylou S40s Review: This low-priced headset delivers high-quality audio

The Haylou S40s is an budget-friendly over-ear headphone priced at approximately €52, offering surprising audio performance that punches above its price class. Out of the box, the headphones feature a very flat equalizer profile that ensures faithful sound reproduction, though it requires tweaking via the companion Haylou Sound app to unlock rich bass and balanced treble. Key...Read more

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fr.xiaomitoday.it
02/09/2025
Haylou S40 ANC Review - XiaomiToday

The Haylou S40 ANC is highlighted as a top-tier budget headphone, featuring a unique 40 mm and 20 mm dual-driver system for Hi-Res audio and LDAC support at a low price point. Key strengths include effective -50 dB adaptive hybrid ANC, a 90-hour battery life, and comfortable ergonomics for long-term wear. Limitations identified in the review include the necessity to manually...Read more

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es.digitaltrends.com
16/04/2026
Haylou S40: Hybrid ANC headphones that work for everything", "Haylou S40: Hybrid ANC headphones built for the all-rounder

The Haylou S40 is an affordable pair of over-ear headphones released in July 2025 with an MSRP of $36.00, designed to offer high-end features on a budget. Equipped with a dual dynamic driver system (40mm and 20mm), these headphones deliver a well-balanced audio profile with punching bass and detailed trebles. Key technical standouts include compatibility with high-resolution LDAC...Read more

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pisapapeles.net
30/12/2025
Review of Haylou S40 Over-Ear and Haylou Mori Pro In-Ear Headphones

The Haylou S40 over-ear headphones balance a premium-feeling plastic build with robust features for under $50. Their biggest strengths include an impressive 90-hour battery life, fast charging capabilities, a well-balanced acoustic profile with LDAC and Hi-Res audio support, and highly effective Active Noise Cancellation (ANC) with a dedicated wind-resistance mode. On the downside,...Read more

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fanaticosdelhardware.com
05/11/2025
Haylou S40 Review: Hybrid noise cancellation, spatial audio, and LDAC with record-breaking battery life in a foldable design

The Haylou S40 is a highly competitive pair of over-ear circumaural headphones that delivers premium features like hybrid active noise cancellation (ANC up to -50 dB), 360° spatial audio with head tracking, and high-resolution LDAC codec support at an affordable price of €57.99. Fueled by a dual-driver system (40mm + 20mm), they offer an exceptionally long-lasting battery life that...Read more

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xiaomitoday.it
02/09/2025
Haylou S40 ANC Review

The Haylou S40 ANC over-ear headphones are highlighted as a high-value purchase for approximately €40, featuring premium 5-microphone adaptive hybrid noise cancellation (-50dB) and a dual-driver system with Hi-Res Audio certification. Key pros include exceptional 90-hour battery life (45–60 hours with ANC), LDAC codec support, and a 360° spatial audio mode, offering a warm and...Read more

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