OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using 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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OneOdio A9 Review | 93 Data compared

Avg. price:~£70Form factor:over-earConnectivity:wirelessBattery life:30 hoursActive noise cancellation (ANC):yes

OneOdio A9 Review: Compare 93 technical specifications and user reviews to see how this product ranks in the Headphones category and whether it is worth buying.

OneOdio A9
7.1/10

Overall score

Score
7.1/ 10
✕
What it is
An overall evaluation of the headphones' quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to identify the best headphones on the market.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 75% of models
Score components

80%

7.0

Technical score

20%

7.2

User score

â–²Better than 75% of headphones
7.9

Value for money

Value for money
7.9/ 10
✕
What it is
An indicator that combines the headphones' overall rating with their cost.
When it matters
When you are looking for headphones that offer a strong balance of performance, features, and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 75% of models
Score components

70%

7.1

Overall score

30%

10

Price

â–²Better than 75%
7.0

Technical score

Technical score
7.0/ 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–² Better than 76% of models
Score components

52%

8.2

Sound

20%

4.4

Features

10%

7.9

Design

8%

5.5

Connectivity

6%

4.4

Battery

4%

9.4

Calls & Controls

â–²Better than 76%
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%

7.6

User ratings

30%

6.2

Number of reviews

Based on ratings from across the web.
â–¼Worse than 82%
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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 OneOdio A9

Technical score
Technical score
7.0/ 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–² Better than 76% of models
Score components:

52%

8.2

Sound

20%

4.4

Features

10%

7.9

Design

8%

5.5

Connectivity

6%

4.4

Battery

4%

9.4

Calls & Controls

7.0
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%

7.6

User ratings

30%

6.2

Number of reviews

Based on ratings from across the web.
7.2
Popularity
Popularity
6.2/ 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 54% of models
Popularity:
OneOdio A9 has a popularity score of 6.2 points, which is higher than that of 53.5% of products in this category.
6.2
Value for money
Value for money
7.9/ 10
✕
What it is
An indicator that combines the headphones' overall rating with their cost.
When it matters
When you are looking for headphones that offer a strong balance of performance, features, and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 75% of models
Score components:

70%

7.1

Overall score

30%

10

Price

7.9
Active noise cancellation (ANC)
yes
This pair of headphones supports active noise cancellation. 72.6% of headphones support active noise cancellation.
Driver type
dynamic
Driver size
40 mm
Market range: <10 mm – >50 mm
This pair of headphones uses a driver size of 40 mm, larger driver size than 28.6% of headphones and equal to 53.3% 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
20 Hz
Market range: <5 Hz – >20 Hz
This pair of headphones reaches a lowest frequency of 20 Hz, higher lowest frequency than 50.8% of headphones and equal to 47.3% of headphones.
Show more
Noise-canceling microphone
yes
This pair of headphones supports a noise-canceling microphone. 61.1% 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
4
Market range: <0 – >4
This pair of headphones has 4 microphones, more microphones than 88% of headphones and equal to 5.1% 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
80 dB
Market range: <57.2 dB – >95 dB
This pair of headphones has a microphone SNR of 80 dB, higher microphone SNR than 51% of headphones and equal to 10.2% of headphones.
Show more
Connectivity
wireless
This pair of headphones supports wireless connectivity, more flexible connectivity than 50.8% of headphones and equal to 49.2% of headphones.
Bluetooth version
4.1
This pair of headphones uses Bluetooth version 4.1, newer Bluetooth version than 62.3% of headphones and equal to 5.4% of headphones.
Maximum Bluetooth range
10 m
Market range: <10 m – >15 m
This pair of headphones offers a Bluetooth range of 10 m, higher Bluetooth range than 2.7% of headphones and equal to 80.6% of headphones.
Audio latency
?
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
30 hours
Market range: <10 hours – >70 hours
This pair of headphones offers battery life of 30 hours, higher battery life than 46.3% of headphones and equal to 10.4% of headphones.
Battery life with ANC
15 hours
Market range: <15 hours – >55 hours
This pair of headphones offers battery life with ANC of 15 hours, lower battery life with ANC than 87.6% of headphones and equal to 3.5% of headphones.
Charging time
3 hours
Market range: <1.5 hours – >3.5 hours
This pair of headphones needs 3 hours to charge, higher charging time than 66.7% of headphones and equal to 20.8% of headphones.
Quick charge
no
This pair of headphones does not support quick charging. 33.1% of headphones support quick charge.
Battery capacity
500 mAh
Market range: <290 mAh – >1k mAh
This pair of headphones has a battery capacity of 500 mAh, lower battery capacity than 55.3% of headphones and equal to 9.4% of headphones.
Show more
Brand name
OneOdio
Form factor
over-ear
Weight
180 g
Market range: <14 g – >340 g
This pair of headphones weighs 180 g, lighter than 61.7% of headphones and equal to 0.8% of headphones.
Acoustic design
closed-back
Clamp force
?
Show more

OneOdio A9 vs the average pair of headphones

246810TotalDesignSoundBatteryConnectivityCalls & ControlsFeatures
  • Active noise cancellation
    This pair of headphones supports active noise cancellation, the average pair of headphones does not. 27.5% of headphones support active noise cancellation.
  • More flexible connectivity
    This pair of headphones offers more flexible connectivity than the average pair of headphones (wireless vs wired). The average headphones support wired connectivity.
    wireless vs wired
  • Clear call microphone
    This pair of headphones offers a clear call microphone, while the average pair of headphones does not. 39% of headphones support noise-canceling microphones.
  • On-device controls
    This pair of headphones includes on-device controls, the average pair of headphones does not. 46.8% of headphones support on-device controls.
  • 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.
  • 3 more microphones
    This pair of headphones has more microphones than the average pair of headphones (4 vs 1). The average headphones have 1 microphones.
    4 vs 1
  • Foldable design
    This pair of headphones has a foldable design, the average pair of headphones does not. 48.3% of headphones are foldable.
  • Wind noise reduction
    This pair of headphones reduces wind noise, the average pair of headphones does not. 34.3% of headphones support wind noise reduction.
  • Foldable design
    This pair of headphones has a foldable design, the average pair of headphones does not. 48.3% of headphones are foldable.
  • 17.4% lower weight
    This pair of headphones is lighter than the average pair of headphones (180 g vs 218 g). The average pair of headphones weighs 218 g.
    180 g vs 218 g
  • Active noise cancellation
    This pair of headphones supports active noise cancellation, the average pair of headphones does not. 27.5% of headphones support active noise cancellation.
  • 3 dB/mW higher sensitivity
    This pair of headphones has a higher sensitivity than the average pair of headphones (105 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
    105 dB/mW vs 102 dB/mW
  • Rechargeable battery
    This pair of headphones has a rechargeable battery, the average pair of headphones does not. 47.9% of headphones have a rechargeable battery.
  • More flexible connectivity
    This pair of headphones offers more flexible connectivity than the average pair of headphones (wireless vs wired). The average headphones support wired connectivity.
    wireless vs wired
  • Clear call microphone
    This pair of headphones offers a clear call microphone, while the average pair of headphones does not. 39% of headphones support noise-canceling microphones.
  • On-device controls
    This pair of headphones includes on-device controls, the average pair of headphones does not. 46.8% of headphones support on-device controls.
  • 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.
  • 3 more microphones
    This pair of headphones has more microphones than the average pair of headphones (4 vs 1). The average headphones have 1 microphones.
    4 vs 1
  • Wind noise reduction
    This pair of headphones reduces wind noise, the average pair of headphones does not. 34.3% of headphones support wind noise reduction.
  • 1 hours longer charging time
    This pair of headphones has a higher charging time than the average pair of headphones (3 hours vs 2 hours). The average headphones need 2 hours to charge.
    3 hours vs 2 hours
  • 0.7 % higher distortion
    This pair of headphones has a higher total harmonic distortion than the average pair of headphones (1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    1 % vs 0.3 %
  • 15 hours shorter ANC battery life
    This pair of headphones has a lower battery life with ANC than the average pair of headphones (15 hours vs 30 hours). The average headphones offer battery life with ANC of 30 hours.
    15 hours vs 30 hours
  • 2 Hz weaker bass extension
    This pair of headphones has a higher lowest frequency than the average pair of headphones (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
    20 Hz vs 18 Hz
  • Tangle-prone cable
    This pair of headphones uses a tangle-prone cable, while the average pair of headphones is easier to manage. 64.2% of headphones use a tangle-free cable.
  • 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
    OneOdio A9
    the average pair of headphones
    OneOdio A9 has a lower user score than the average pair of headphones (7.17 vs 8).
    7.17 vs 8
  • 13.8% lower battery capacity
    This pair of headphones has a lower battery capacity than the average pair of headphones (500 mAh vs 580 mAh). The average headphones have a battery capacity of 580 mAh.
    500 mAh vs 580 mAh
  • 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
    OneOdio A9
    the average pair of headphones
    OneOdio A9 has a lower user score than the average pair of headphones (7.17 vs 8).
    7.17 vs 8
  • Tangle-prone cable
    This pair of headphones uses a tangle-prone cable, while the average pair of headphones is easier to manage. 64.2% of headphones use a tangle-free cable.
  • 0.7 % higher distortion
    This pair of headphones has a higher total harmonic distortion than the average pair of headphones (1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    1 % vs 0.3 %
  • 2 Hz weaker bass extension
    This pair of headphones has a higher lowest frequency than the average pair of headphones (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
    20 Hz vs 18 Hz
  • 1 hours longer charging time
    This pair of headphones has a higher charging time than the average pair of headphones (3 hours vs 2 hours). The average headphones need 2 hours to charge.
    3 hours vs 2 hours
  • 15 hours shorter ANC battery life
    This pair of headphones has a lower battery life with ANC than the average pair of headphones (15 hours vs 30 hours). The average headphones offer battery life with ANC of 30 hours.
    15 hours vs 30 hours
  • 13.8% lower battery capacity
    This pair of headphones has a lower battery capacity than the average pair of headphones (500 mAh vs 580 mAh). The average headphones have a battery capacity of 580 mAh.
    500 mAh vs 580 mAh

Video reviews

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

9.5
MEGA-Testberichte
≈ estimated
20/11/2019
Hands-on review · ANC, sound and microphone tests
Verdict
OneOdio A9 has surprisingly strong noise cancelling, the best in its price class the reviewer has tested.
Brand video

Expert reviews

In-depth analysis and verdict from leading tech publications

D
djmusicgeek.com
05/10/2022
Summary of the review
OneOdio A Series Review – Your New Noise Cancelling Headphones?
smartzone.de
26/10/2021
Hands-on test · Hybrid ANC headphones
Verdict
The OneOdio A9 sounds balanced and blocks outside noise passively, but its ANC adds hiss and a tinny tone, so it's best used with ANC off.
lars-test.de
07/06/2020
Field test · Hybrid ANC headphones
Verdict
The OneOdio A9 blocks most bus and train noise and suits rock and pop, but wind noise remains and its sound without ANC is lifeless.
on-mag.fr
14/08/2022
Hands-on test · Wireless ANC headphones
Verdict
The OneOdio A9 is comfortable and attractive with decent noise cancelling and 26 to 30 hours of battery, but its old Bluetooth and micro-USB port show its age.
O
on-mag.fr
14/08/2022
Summary of the review
Review of the OneOdio A9 - ON-mag: Front Page
(Translated)Show original
T
tweakers.net
25/09/2020
Summary of the review
Noise-Cancelling Headphones Roundup - Eight models between 80 and 160 euros tested
(Translated)Show original
T
tech-meester.net
Unknown
Summary of the review
OneOdio A9 Review & Rating – Is It Worth It?
(Translated)Show original

Third-party reviews

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

What customers like about OneOdio A9

  • Effective Hybrid Active Noise Cancellation (ANC) that reduces up to 96% of low-frequency noise
  • Balanced sound quality with clear mids, crisp highs, and minimal distortion at high volumes
  • Commendable battery life of up to 30 hours on a single charge
  • High level of comfort provided by soft memory protein ear pads and an ergonomic headband
  • Versatile design featuring 90-degree swiveling earcups and a foldable structure for portability
  • Reliable built-in noise-cancelling microphone for clear voice calls
  • Includes a durable EVA carrying case for added protection during travel

What customers don't like about OneOdio A9

  • Heavy reliance on plastic in the build, which some users find slightly less premium
  • The chrome accents are prone to attracting visible fingerprints
  • ANC effectiveness can vary, with some users noting it is less impressive than high-end competitors
  • Uses an older Bluetooth version (typically 4.1 or 5.0 depending on the production batch)
  • Lack of high-end audio codecs like aptX or LDAC for high-fidelity wireless streaming

Verdict

The OneOdio A9 is an over-ear hybrid active noise-canceling headphone featuring 40mm neodymium drivers and a built-in CSR8635 Bluetooth 4.1 chipset for stable wireless connectivity. It offers a frequency response range of 20Hz–20kHz, an impedance of 32Ω, and a 500mAh battery providing up to 30 hours of playtime in Bluetooth mode or 15 hours with both ANC and Bluetooth active. Main characteristics include 90-degree swiveling ear cups, a foldable design, and a dedicated four-microphone system for clear voice capture. Key pros include effective low-frequency noise reduction (up to 96%), balanced high-fidelity sound with deep bass, and comfortable protein leather cushions suitable for long travel sessions. Cons include an older Bluetooth 4.1 version, a relatively long 3-hour charging time via micro-USB instead of USB-C, and lack of an ambient sound mode.

Compare OneOdio A9 with other products in the Headphones category

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