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Dali IO 4 Review | 93 Data compared

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  • Avg. price: ~£260
  • Form factor: over-ear
  • Connectivity: wireless
  • Battery life: 60 hours
  • Active noise cancellation (ANC): no

Dali IO 4 review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

5.3

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%

4.7

Technical Score

20.0%

7.4

User score

Good
4.7

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%

5.0

Sound

20.0%

2.7

Features

10.0%

5.7

Design

8.0%

4.6

Connectivity

6.0%

7.8

Battery

4.0%

5.2

Calls & Controls

Poor
7.4

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%

8.8

User reviews

30.0%

4.2

Popularity

User score:
United Kingdom
amazon
4.4
(90)
amazon
4.5
(3)
United States
Amazon_logo.png
4.4
(90)
Amazon_logo.png
4.5
(3)

(Reviews last updated: June 2026)

Very good
  • 8.6
    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%

    1.0

    Noise-canceling microphone

    8.0%

    10

    Battery life

  • 3.3
    Travel

    Score components:

    28.0%

    1.0

    Active noise cancellation (ANC)

    24.0%

    10

    Battery life

    18.0%

    2.7

    Weight

    16.0%

    1.0

    Multipoint support

    14.0%

    0.0

    Ambient sound mode

  • 4.6
    Calls

    Score components:

    28.0%

    1.0

    Noise-canceling microphone

    24.0%

    10

    Can be used as a headset

    18.0%

    1.0

    Multipoint support

    16.0%

    10

    Battery life

    14.0%

    1.0

    Companion app

  • 7.2
    Workout

    Score components:

    28.0%

    2.7

    Weight

    24.0%

    10

    Water resistance

    20.0%

    6.0

    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 DALI IO-4 is a premium, wireless over-ear headphone featuring custom-designed 50mm paper fiber cone drivers and Bluetooth 5.0 connectivity with support for high-resolution aptX HD, aptX, and AAC codecs. Designed with a closed-back circumaural architecture, it offers a frequency response of 10Hz–20kHz, an impedance of 25 ohms, and a notable IP53 rating for dust and spray resistance. Main pros include a class-leading 60-hour battery life, high-fidelity sound transparency typical of DALI’s loudspeaker heritage, and extreme comfort provided by memory foam earpads and a lightweight 320g frame. However, potential cons include the lack of active noise cancellation (ANC), the absence of a dedicated control app for sound customization, and a relatively light bass profile that may not satisfy users seeking heavy low-end impact.

Technical Specifications of Dali IO 4

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%

5.0

Sound

20.0%

2.7

Features

10.0%

5.7

Design

8.0%

4.6

Connectivity

6.0%

7.8

Battery

4.0%

5.2

Calls & Controls

4.7
Dali IO 4 has a technical score of 4.73 points, which is lower than that of 58.9% 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%

8.8

User reviews

30.0%

4.2

Popularity

User score:
United Kingdom
amazon
4.4
(90)
amazon
4.5
(3)
United States
Amazon_logo.png
4.4
(90)
Amazon_logo.png
4.5
(3)

(Reviews last updated: June 2026)

7.4
Dali IO 4 has a user score of 7.44 points, which is lower than that of 70.4% 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.
4.2
Dali IO 4 has a popularity of 4.2 points, which is lower than 52.4% of products in this category.
Ratio quality/price

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

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

Score components:

60.0%

5.3

Overall score

40.0%

9.2

Price

6.4
Dali IO 4 has a quality-to-price ratio of 6.4 points, which is lower than 65.9% of products in this category.
Active noise cancellation (ANC)
What it is: Reduces background noise using active technology
When it matters: When blocking office, travel, or aircraft noise is a priority.

Importance: HIGH

no
Dali IO 4 does not support active noise cancellation. 27.4% of headphones support active noise cancellation.
Driver type
What it is: Type of speaker driver technology used
When it matters: When the underlying sound character and driver technology matter to you.

Importance: MEDIUM

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

Importance: MEDIUM

50 mm
Dali IO 4 uses a driver size of 50 mm, larger driver size than 86.1% of headphones and equal to 8.3% 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
Dali IO 4 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

10 Hz
Dali IO 4 reaches a lowest frequency of 10 Hz, lower lowest frequency than 67.3% of headphones and equal to 12.5% 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

no
Dali IO 4 does not support a noise-canceling microphone. 45.6% 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
Dali IO 4 is headset-ready, 84.7% is not. 15.3% of headphones can be used as headsets.
Number of microphones
What it is: Total number of built-in microphones
When it matters: When call pickup quality and beamforming support matter to you.

Importance: LOW

Good value: >=2

1
Dali IO 4 has 1 microphones, more microphones than 25.9% of headphones and equal to 52.2% of headphones.
Boom microphone
What it is: Includes detachable boom microphone for voice clarity
When it matters: When you need stronger voice clarity for gaming, streaming, or work calls.

Importance: LOW

no
Dali IO 4 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
Dali IO 4 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
Dali IO 4 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

10 m
Dali IO 4 offers a Bluetooth range of 10 m, higher Bluetooth range than 2.6% of headphones and equal to 79.9% 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

no
Dali IO 4 does not support multipoint. 65.1% 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

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

Importance: MEDIUM

no
Dali IO 4 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
Dali IO 4 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
Dali IO 4 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

60 hours
Dali IO 4 offers battery life of 60 hours, higher battery life than 79% of headphones and equal to 6.2% 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

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

Importance: MEDIUM

Good value: <=2 hours

2.5 hours
Dali IO 4 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

no
Dali IO 4 does not support quick charging. 69.1% 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

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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

Dali
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

320 g
Dali IO 4 weighs 320 g, heavier than 84.9% of headphones and equal to 1.4% 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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Dali IO 4 vs the average headphone

  • 10 mm larger driver size
    Dali IO 4 uses a larger driver size than the average headphone (50 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    What it is: Diameter of the speaker driver unit
    When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.

    Importance: MEDIUM

    Dali IO 4 uses a larger driver size than the average headphone (50 mm vs 40 mm). The average headphones use a driver size of 40 mm.50 mm vs 40 mm
  • More flexible connectivity
    Dali IO 4 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

    Dali IO 4 offers more flexible connectivity than the average headphone (wireless vs wired). The average headphones support wired connectivity.wireless vs wired
  • 30 hours longer battery life
    Dali IO 4 has a higher battery life than the average headphone (60 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

    Dali IO 4 has a higher battery life than the average headphone (60 hours vs 30 hours). The average headphones offer battery life of 30 hours.60 hours vs 30 hours
  • 8 Hz lower bass extension
    Dali IO 4 has a lower lowest frequency than the average headphone (10 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

    Dali IO 4 has a lower lowest frequency than the average headphone (10 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.10 Hz vs 18 Hz
  • On-device controls
    Dali IO 4 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

    Dali IO 4 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.
  • USB-C charging
    Dali IO 4 uses USB-C charging, the average headphone does not. 29.4% of headphones use USB Type-C.
    What it is: Uses USB-C connector for charging or data
    When it matters: When you want to charge with the same cable family used by your phone, tablet, laptop, or other daily devices.

    Importance: LOW

    Dali IO 4 uses USB-C charging, the average headphone does not. 29.4% of headphones use USB Type-C.
  • Water resistance
    Dali IO 4 is water resistant, the average headphone is not. 20.2% of headphones are water resistant.
    IP53
    What it is: Protection level against water exposure
    When it matters: When workouts, commuting, or outdoor use expose the headphones to moisture.

    Importance: MEDIUM

    Dali IO 4 is water resistant, the average headphone is not. 20.2% of headphones are water resistant.
  • Removable battery
    Dali IO 4 has a removable battery, the average headphone does not. 7.6% of headphones have a removable battery.
    What it is: Battery can be detached and replaced
    When it matters: When long-term serviceability or battery replacement matters to you.

    Importance: LOW

    Dali IO 4 has a removable battery, the average headphone does not. 7.6% of headphones have a removable battery.
  • Water resistance
    Dali IO 4 is water resistant, the average headphone is not. 20.2% of headphones are water resistant.
  • Better IP rating
    Dali IO 4 has a better IP rating than the average headphone (IP53 vs none). The average headphones have an IP rating of none.
  • 10 mm larger driver size
    Dali IO 4 uses a larger driver size than the average headphone (50 mm vs 40 mm). The average headphones use a driver size of 40 mm.
  • 8 Hz lower bass extension
    Dali IO 4 has a lower lowest frequency than the average headphone (10 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
  • 30 hours longer battery life
    Dali IO 4 has a higher battery life than the average headphone (60 hours vs 30 hours). The average headphones offer battery life of 30 hours.
  • USB-C charging
    Dali IO 4 uses USB-C charging, the average headphone does not. 29.4% of headphones use USB Type-C.
  • Removable battery
    Dali IO 4 has a removable battery, the average headphone does not. 7.6% of headphones have a removable battery.
  • Rechargeable battery
    Dali IO 4 has a rechargeable battery, the average headphone does not. 47.9% of headphones have a rechargeable battery.
  • Play while charging
    Dali IO 4 can play while charging, the average headphone cannot. 55.9% of headphones support play while charging.
  • More flexible connectivity
    Dali IO 4 offers more flexible connectivity than the average headphone (wireless vs wired). The average headphones support wired connectivity.
  • On-device controls
    Dali IO 4 includes on-device controls, the average headphone does not. 46.8% of headphones support on-device controls.

Total
Design
Sound
Battery
Connectivity
Calls & Controls
  • 46.8% higher weight
    Dali IO 4 is heavier than the average headphone (320 g vs 218 g). The average pair of headphones weighs 218 g.
  • 10 dB lower max SPL
    Dali IO 4 has a lower max SPL than the average headphone (100 dB vs 110 dB). The average headphones reach a max SPL of 110 dB.
  • 0.5 hours longer charging time
    Dali IO 4 has a higher charging time than the average headphone (2.5 hours vs 2 hours). The average headphones need 2 hours to charge.
  • 46.8% higher weight
    Dali IO 4 is heavier than the average headphone (320 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

    Dali IO 4 is heavier than the average headphone (320 g vs 218 g). The average pair of headphones weighs 218 g.320 g vs 218 g
  • 0.5 hours longer charging time
    Dali IO 4 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

    Dali IO 4 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
  • 2.89x more expensive
    Dali IO 4 is more expensive than the average headphone (£260 vs £90).
    Dali IO 4 is more expensive than the average headphone (£260 vs £90).£260 vs £90
  • 10 dB lower max SPL
    Dali IO 4 has a lower max SPL than the average headphone (100 dB vs 110 dB). The average headphones reach a max SPL of 110 dB.
    What it is: Maximum safe sound pressure level
    When it matters: When high-volume headroom is part of your use case.

    Importance: LOW

    Good value: >=116 dB

    Dali IO 4 has a lower max SPL than the average headphone (100 dB vs 110 dB). The average headphones reach a max SPL of 110 dB.100 dB vs 110 dB
  • 7.6% lower user score
    Dali IO 4 has a lower user score than the average headphone (7.44 vs 8.000).
    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.
    Dali IO 4 has a lower user score than the average headphone (7.44 vs 8.000).7.44 vs 8
  • 4.7% worse value for money
    Dali IO 4 has worse value for money than the average headphone (6.44 vs 6.736).
    What it is: An indicator that combines the headphones' overall rating with their cost.
    When it matters: When you are looking for headphones that offer a strong balance of performance, features, and price.
    Dali IO 4 has worse value for money than the average headphone (6.44 vs 6.736).6.44 vs 6.74
Total
Overall
Design
Sound
Battery

Graphic comparison of Dali IO 4 and

Attribute category
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Third-party reviews

United Kingdom
amazon
4.4
90 Reviews
amazon
4.5
3 Reviews
United States
Amazon_logo.png
4.4
90 Reviews
Amazon_logo.png
4.5
3 Reviews

(Reviews last updated: June 2026)

What customers like about Dali IO 4?

  • Class-leading 60-hour battery life allows for weeks of use between charges
  • Exceptional sound clarity and detail, especially for vocals and acoustic instruments
  • Balanced, neutral sound profile that accurately reproduces music as intended by producers
  • High-quality, sturdy build with a premium, luxurious feel and 'very Danish' aesthetic
  • Reliable physical pushbutton controls are often preferred over finicky touch controls
  • Excellent passive noise isolation despite lacking active noise cancellation
  • Versatile connectivity supporting aptX HD, Apple AAC, and high-quality USB-C audio

What customers dislike about Dali IO 4?

  • Noticeable lack of bass presence and 'oomph', making them less suitable for hip-hop or pop
  • Absence of Active Noise Cancellation (ANC), which is standard for many competitors at this price
  • Can be uncomfortable for some due to firm clamping force and relatively small round ear cups
  • Limited portability as the ear cups swivel flat but do not fold for more compact storage
  • The included carrying accessory is a soft string bag rather than a protective hard case
  • Lack of a dedicated companion app for EQ customisation or smart feature updates
  • Premium price point is considered high for a model without noise-cancelling features

Expert reviews

W
whathifi.com
12/03/2020
Dali IO-4 review

The Dali IO-4 is an elegant pair of wireless over-ear headphones that delivers an expansive, clear, and highly detailed soundstage, particularly excelling at reproducing textured vocals and subtle background details. Built with premium materials reminiscent of their pricier sibling, the IO-6, these headphones feature custom 50mm paper fibre cone drivers designed to eliminate...Read more

S
stereonet.com
21/10/2019
DALI iO-4 Headphone Review

The DALI iO-4 headphones represent an impressive entry into the personal audio market by the Danish speaker manufacturer, highlighting exceptional 60-hour battery life, durable construction, and comfortable,, IP53-rated design. Performance is characterized by a transparent, flat-response sound signature, user-friendly tap controls, and flexible connectivity options including...Read more

M
majorhifi.com
30/01/2020
Dali IO-4 Review: Precise and Delicate

The Dali IO-4 wireless headphones ($400) deliver a uniquely light, thin, and precise sound signature. They feature a rare 50mm free-edge paper fiber cone driver, which yields exceptional transparency, crystal-like midrange separation, and a highly accurate, multidimensional soundstage. The headphones offer outstanding technical features, highlighted by an extraordinary 60-hour...Read more

S
soundstagesolo.com
20/05/2021
DALI IO-4 Bluetooth Headphones

The DALI IO-4 is a high-end, classy pair of non-noise-canceling Bluetooth headphones priced at $399 USD. Architecturally identical to the IO-6 but lacking its noise-canceling feature, this model utilizes 50mm dynamic drivers and supports AAC and aptX HD codecs for enhanced streaming quality. The lack of noise cancellation rewards users with an outstanding 60-hour battery life—double...Read more

H
headphone.guru
07/06/2021
DALI IO-4 Wireless Headphone Review

The DALI IO-4 wireless headphones offer exceptional tonal accuracy and detail, presenting music exactly as producers intended without bloating the sound profile. The review praises their tight, fast, and musical bass response, alongside smooth midranges and well-resolved, subtle treble extension when utilizing high-quality Bluetooth codecs like aptX HD. For users seeking even...Read more

A
avguide.ch
30/03/2020
Dali iO-6 and iO-4 Review - A Successful Debut

This review highlights the debut of the Dali iO-6 and iO-4 over-ear Bluetooth headphones, noting that the renowned Danish audio specialist has successfully delivered audiophile-grade sound quality. The primary distinction between the two models lies in the active noise-cancelling (ANC) capability and battery performance: the iO-6 features ANC and provides 30 hours of playback, while...Read more

(Translated)Show original
L
likehifi.de
30/01/2020
Dali IO-4 Headphones Review: To Go, Please!

The Dali IO-4 marks the Danish loudspeaker manufacturer's successful venture into the headphone market with a closed-back, over-ear design. Built primarily from high-quality, lightweight plastic with incredibly soft synthetic leather ear pads, the headphones offer exceptional long-term wearing comfort and a stable fit. A standout feature of this model is its class-leading,...Read more

(Translated)Show original
C
connect.de
30/01/2020
Dali iO-4 Review - Connect

The Dali iO-4 marks the Danish loudspeaker manufacturer's impressive entry into the headphone market with a purely analog, passive-canceling Bluetooth over-ear model priced at 300 Euros. Weighing 320 grams, the headphones boast an exceptionally robust build quality featuring a premium mix of leather, memory foam, and steel components. They leverage Dali's signature 50mm paper fiber...Read more

(Translated)Show original
L
lesnumeriques.com
09/09/2019
Dali launches into Bluetooth headphones with the iO-4 and iO-6", "Dali enters the Bluetooth headphone market with the iO-4 and iO-6

The Danish Hi-Fi speaker specialist Dali has entered the portable Bluetooth audio market with the introduction of its first two over-ear wireless headphones, the iO-4Go and iO-6Go. Unveiled at IFA 2019, both models prioritize excellent build quality with robust finishes, utilizing a combination of synthetic leather ear pads and plastic protective shells. They feature mechanical...Read more

(Translated)Show original
O
on-mag.fr
11/01/2021
Dali iO-4 Review: A wireless headphone that showcases the excellent expertise of the Danish loudspeaker specialist

Le casque sans fil circum-auriculaire Dali iO-4 (commercialisé au prix de 300 €) est une version plus abordable que le modèle iO-6 du constructeur danois. Conçu par un spécialiste historique des enceintes acoustiques, ce modèle se distingue de son aîné uniquement par l'absence de réduction de bruit active (ANC) et un poids légèrement inférieur de 8 grammes. Sur le plan technique, il...Read more

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audio46.com
01/07/2026
Dali iO-4 Bluetooth Over-Ear Headphones - Audio46

The Dali iO-4 is a unique, niche wireless headphone that offers an authentic, danish-engineered sound profile designed for audiophiles who prefer a leaner acoustic presentation. The sound signature features a light bass and a slightly recessed upper midrange, which prevents vocals from overpowering the mix. Additionally, its treble performance shows excellent skill, retrieving...Read more

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afdigitale.it
13/03/2020
Dali IO-4: Wireless Headphones for Detail and Sophistication Lovers

The Dali IO-4 wireless over-ear headphones are a premium offering from the Danish manufacturer, priced at €319, which is €100 less than their sibling model, the IO-6. Constructed with materials identical to the IO-6, the IO-4 drops active noise cancellation (ANC) but retains excellent passive noise isolation from its closed-back cup design. Key technical highlights include a custom...Read more

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tweakers.net
21/02/2025
Thorough and independent Dali IO-4 reviews

According to user reviews on Tweakers, the Dali IO-4 is highly praised for its audiophile-grade sound, offering a neutral, transparent audio profile driven by 50mm paper fiber cone drivers. A standout feature is the 60-hour battery life, combined with user-friendly physical controls that eliminate the need for a dedicated app. However, a major limitation noted by reviewers is the...Read more

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hificorner.be
22/11/2019
DALI IO headphones review: the best of both worlds

DALI's debut into the wireless headphone market with the IO-4Go and IO-6Go models successfully bridges the gap between high-end hifi speaker musicality and wireless convenience. Priced at €299 and €399 respectively, the two models share nearly identical premium designs, custom-made 50mm paper-fiber drivers, and an robust IP53 rating for outdoor use. The core differentiator is that...Read more

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av2d.com
22/11/2019
DALI IO Headphones Review: The Best of Both Worlds

The DALI IO-6 is a premium wireless, over-ear headphone that bridges the gap between high-end wired audiophile sound quality and modern wireless convenience. It features custom, in-house designed 50mm drivers paired with a neodymium magnet system and high-quality felt damping to deliver a balanced, low-distortion sound signature that tightly controls heavy basslines and accurately...Read more

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