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Scored using Headphones Methodology v1.0
Headphones Methodology v1.0
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Products in this category are scored under Frontum Headphones Methodology v1.0: technical specifications plus authentic consumer ratings, with 0% commercial bias.
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Sony MDR AS400IP W Review | 93 Data compared

Avg. price:~£25Form factor:in-earConnectivity:wiredBattery life:N/A hoursActive noise cancellation (ANC):no

Sony MDR AS400IP W Review: Compare 93 technical specifications and user reviews to see how this product ranks in the Headphones category and whether it is worth buying.

Sony MDR AS400IP W
5.8/10

Overall score

Score
5.8/ 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–¼ Worse than 73% of models
Score components

80%

5.5

Technical score

20%

7.2

User score

â–¼Worse than 73% of headphones
7.1

Value for money

Value for money
7.1/ 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–¼ Worse than 67% of models
Score components

70%

5.8

Overall score

30%

10

Price

â–¼Worse than 67%
5.5

Technical score

Technical score
5.5/ 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 75% of models
Score components

52%

5.8

Sound

20%

4.4

Features

10%

7.2

Design

8%

4.6

Connectivity

6%

4.0

Battery

4%

6.4

Calls & Controls

â–¼Worse than 75%
7.2

User score

User score
7.2/ 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–¼ Worse than 82% of models
Score components

70%

7.3

User ratings

30%

6.8

Number of reviews

Based on ratings from across the web.
â–¼Worse than 82%
  • sony-mdr-as400ip-w
sony-mdr-as400ip-w
Where to buy
*As an Amazon Associate, we earn from qualifying purchases.
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 Sony MDR AS400IP W

Technical score
Technical score
5.5/ 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 75% of models
Score components:

52%

5.8

Sound

20%

4.4

Features

10%

7.2

Design

8%

4.6

Connectivity

6%

4.0

Battery

4%

6.4

Calls & Controls

5.5
User score
User score
7.2/ 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–¼ Worse than 82% of models
Score components

70%

7.3

User ratings

30%

6.8

Number of reviews

Based on ratings from across the web.
7.2
Popularity
Popularity
6.8/ 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
â–² Better than 62% of models
Popularity:
Sony MDR AS400IP W has a popularity score of 6.8 points, which is higher than that of 61.7% of products in this category.
6.8
Value for money
Value for money
7.1/ 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–¼ Worse than 67% of models
Score components:

70%

5.8

Overall score

30%

10

Price

7.1
Active noise cancellation (ANC)
no
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
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
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
5 Hz
Market range: <5 Hz – >20 Hz
This pair of headphones reaches a lowest frequency of 5 Hz, lower lowest frequency than 86.3% of headphones and equal to 10.8% of headphones.
Show more
Noise-canceling microphone
no
This pair of headphones does not support a noise-canceling microphone. 39% of headphones support noise-canceling microphones.
Can be used as a headset
yes
This pair of headphones is headset-ready, 84.8% is not. 15.2% of headphones can be used as headsets.
Number of microphones
1
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
no
This pair of headphones does not include a boom microphone. 13.5% of headphones have a boom microphone.
Microphone SNR
?
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Connectivity
wired
This pair of headphones supports wired connectivity, less flexible connectivity than 49.2% of headphones and equal to 50.8% of headphones.
Bluetooth version
N/A
Maximum Bluetooth range
N/A
Audio latency
N/A
Multipoint support
no
This pair of headphones does not support multipoint. 30.6% of headphones support multipoint.
Show more
Ambient sound mode
no
This pair of headphones does not offer ambient sound mode. 24.9% of headphones support ambient sound mode.
EQ support
no
This pair of headphones does not support EQ customization. 23.2% of headphones support EQ.
Companion app
no
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
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
no
This pair of headphones does not support quick charging. 33.1% of headphones support quick charge.
Battery capacity
N/A
Show more
Brand name
Sony
Form factor
in-ear
Weight
10 g
Market range: <14 g – >340 g
This pair of headphones weighs 10 g, lighter than 95.3% of headphones and equal to 1.1% of headphones.
Acoustic design
closed-back
Clamp force
N/A
Show more

Sony MDR AS400IP W vs the average pair of headphones

246810TotalDesignSoundBatteryConnectivityCalls & ControlsFeatures
  • 95.4% lower weight
    This pair of headphones is lighter than the average pair of headphones (10 g vs 218 g). The average pair of headphones weighs 218 g.
    10 g vs 218 g
  • 13 Hz lower bass extension
    This pair of headphones has a lower lowest frequency than the average pair of headphones (5 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
    5 Hz vs 18 Hz
  • Direct 3.5 mm plug
    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.
  • In-line controls
    This pair of headphones includes in-line controls, the average pair of headphones does not. 36.6% of headphones support in-line controls.
  • Sidetone support
    This pair of headphones supports sidetone, the average pair of headphones does not. 25.3% of headphones support sidetone.
  • 4,000 Hz higher treble extension
    This pair of headphones has a higher highest frequency than the average pair of headphones (24,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
    24,000 Hz vs 20,000 Hz
  • Water resistance
    This pair of headphones is water resistant, the average pair of headphones is not. 20.2% of headphones are water resistant.
  • 3.6x cheaper
    Sony MDR AS400IP W is cheaper than the average pair of headphones (£25 vs £90).
    £25 vs £90
  • 3.6x cheaper
    Sony MDR AS400IP W is cheaper than the average pair of headphones (£25 vs £90).
    £25 vs £90
  • 95.4% lower weight
    This pair of headphones is lighter than the average pair of headphones (10 g vs 218 g). The average pair of headphones weighs 218 g.
    10 g vs 218 g
  • Water resistance
    This pair of headphones is water resistant, the average pair of headphones is not. 20.2% of headphones are water resistant.
  • 13 Hz lower bass extension
    This pair of headphones has a lower lowest frequency than the average pair of headphones (5 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
    5 Hz vs 18 Hz
  • 4,000 Hz higher treble extension
    This pair of headphones has a higher highest frequency than the average pair of headphones (24,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
    24,000 Hz vs 20,000 Hz
  • Direct 3.5 mm plug
    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.
  • In-line controls
    This pair of headphones includes in-line controls, the average pair of headphones does not. 36.6% of headphones support in-line controls.
  • Sidetone support
    This pair of headphones supports sidetone, the average pair of headphones does not. 25.3% of headphones support sidetone.
  • 31 mm smaller driver size
    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
    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
    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.
  • No battery indicator
    This pair of headphones does not show battery level clearly, while the average pair of headphones does. 56.3% of headphones have a battery level indicator.
  • 11.6% lower user score
    User score
    7.2/ 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
    ▼▼
    <55-66-77-88-99-10
    Sony MDR AS400IP W
    the average pair of headphones
    Sony MDR AS400IP W has a lower user score than the average pair of headphones (7.17 vs 8).
    7.17 vs 8
  • 2.8% worse value for money
    Sony MDR AS400IP W has worse value for money than the average pair of headphones (7.07 vs 7.3).
    7.07 vs 7.27
  • 11.6% lower user score
    User score
    7.2/ 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
    ▼▼
    <55-66-77-88-99-10
    Sony MDR AS400IP W
    the average pair of headphones
    Sony MDR AS400IP W has a lower user score than the average pair of headphones (7.17 vs 8).
    7.17 vs 8
  • 2.8% worse value for money
    Sony MDR AS400IP W has worse value for money than the average pair of headphones (7.07 vs 7.3).
    7.07 vs 7.27
  • Non-replaceable earpads
    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
    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
    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
  • No battery indicator
    This pair of headphones does not show battery level clearly, while the average pair of headphones does. 56.3% of headphones have a battery level indicator.

Third-party reviews

Based on ratings from across the web.
Reviews last updated: November 2026 · How we calculate this

What customers like about Sony MDR AS400IP W

  • The adjustable loop hangers provide a very secure fit that keeps them from falling out during running and workouts
  • Resistant to sweat and light rain, making them highly suitable for intense exercises and outdoor use
  • Includes four different sizes of silicone earbud tips to help users find a comfortable, personalized fit
  • Sound quality is crisp, clean, and quite good for sports headphones
  • Play/Pause button on the inline remote provides partial control functionality for Android devices despite being built for Apple

What customers don't like about Sony MDR AS400IP W

  • Volume controls on the inline remote are strictly optimized for iOS and do not work for Android devices
  • The over-ear adjustable loop mechanism is awkward and can be tricky to put on quickly
  • They are uncomfortable to wear under tight headwear like knit winter hats due to the over-ear loop design
  • Does not deliver heavy or deep bass, which might disappoint listeners seeking a high-energy thump
  • Some long-term durability concerns regarding the fastening loops tearing or the overall longevity of the build

Verdict

The Sony MDR-AS400iP/W is a lightweight, wired sports headphone designed specifically for Apple devices, weighing only 10g and featuring a splashproof, water-resistant build ideal for intense workouts. Key specifications include 9mm dynamic dome-type drivers, a wide frequency response of 5Hz–24,000Hz, 16-ohm impedance, and a sensitivity of 103dB/mW for clear, energetic audio. Its primary characteristics are adjustable ear loop hangers for a secure fit and a 1.2m tangle-free Y-type cord equipped with an in-line remote and microphone for hands-free calls and track control. Main pros include its stable 'stay-put' design, comfortable hybrid silicone ear tips in four sizes (SS to L), and crisp sound quality. However, some users note cons such as a lack of deep bass performance and the over-ear loop mechanism being slightly awkward for some to put on.

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