Scored using Headphones Methodology v1.0
Headphones Methodology v1.0
Mathematical & Unbiased Scoring
Products in this category are evaluated mathematically under Frontumo Headphones Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
Explore Headphones Methodology v1.0

Sennheiser CX 3 00 Review | 93 Data compared

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

Sennheiser CX 3 00 Review: Compare 93 technical specifications and user reviews to see how this product ranks in the Headphones category and whether it is worth buying.

6.0

Overall score

Score
6.0/ 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
Score components

80%

5.5

Technical score

20%

8.4

User score

â–¼Worse than 59% of headphones
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
Score components

52%

6.1

Sound

20%

4.0

Features

10%

7.2

Design

8%

4.6

Connectivity

6%

4.0

Battery

4%

4.5

Calls & Controls

â–¼Worse than 76% of headphones
8.4

User score

User score
8.4/ 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
Score components

70%

8.0

User ratings

30%

9.2

Number of reviews

Based on 6,260 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–²Better than 80% of headphones
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Best prices

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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 Sennheiser CX 3 00

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
Score components:

52%

6.1

Sound

20%

4.0

Features

10%

7.2

Design

8%

4.6

Connectivity

6%

4.0

Battery

4%

4.5

Calls & Controls

5.5
User score
User score
8.4/ 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
Score components

70%

8.0

User ratings

30%

9.2

Number of reviews

Based on 6,260 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
8.4
Popularity
Popularity
9.2/ 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
Popularity:
Sennheiser CX 3 00 has a popularity score of 9.2 points, which is higher than that of 87% of products in this category.
9.2
Value for money
Value for money
7.2/ 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
Score components:

60%

6.0

Overall score

40%

10

Price

7.2
Active noise cancellation (ANC)
no
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
9.9 mm
Driver size
9.9 mm
This pair of headphones uses a driver size of 9.9 mm, smaller driver size than 91.8% of headphones.
Number of drivers
1
Number of drivers
1
This pair of headphones uses 1 drivers, fewer drivers than 4% of headphones and equal to 96% of headphones.
Lowest frequency
17 Hz
Lowest frequency
17 Hz
This pair of headphones reaches a lowest frequency of 17 Hz, lower lowest frequency than 53.2% of headphones and equal to 0.9% of headphones.
Show more
Noise-canceling microphone
no
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
no
Can be used as a headset
no
This pair of headphones is not headset-ready, while 15.1% is. 84.9% of headphones can be used as headsets.
Number of microphones
0
Number of microphones
0
This pair of headphones has 0 microphones, fewer microphones than 73.2% of headphones and equal to 26.9% of headphones.
Boom microphone
no
Boom microphone
no
This pair of headphones does not include a boom microphone. 13.5% of headphones have a boom microphone.
Microphone SNR
N/A
Show more
Connectivity
wired
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
Multipoint support
no
This pair of headphones does not support multipoint. 30.6% of headphones support multipoint.
Show more
Ambient sound mode
no
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
EQ support
no
This pair of headphones does not support EQ customization. 23.2% of headphones support EQ.
Companion app
no
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
no
Voice assistant support
no
This pair of headphones does not support voice assistants. 60.9% of headphones support voice assistants.
Show more
Battery life
N/A
Battery life with ANC
N/A
Charging time
N/A
Quick charge
no
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
Sennheiser
Form factor
in-ear
Weight
12 g
Weight
12 g
This pair of headphones weighs 12 g, lighter than 92.7% of headphones and equal to 1.1% of headphones.
Acoustic design
closed-back
Clamp force
N/A
Show more

Sennheiser CX 3 00 vs the average pair of headphones

246810TotalDesignSoundBatteryConnectivityCalls & ControlsFeatures
  • 94.5% lower weight
    Weight
    12 g
    This pair of headphones is lighter than the average pair of headphones (12 g vs 218 g). The average pair of headphones weighs 218 g.
    12 g vs 218 g
  • Spatial audio support
    Spatial audio
    yes
    This pair of headphones supports spatial audio, the average pair of headphones does not. 15.9% of headphones support spatial audio.
  • 16 dB/mW higher sensitivity
    Sensitivity
    118 dB/mW
    This pair of headphones has a higher sensitivity than the average pair of headphones (118 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
    118 dB/mW vs 102 dB/mW
  • Direct 3.5 mm plug
    Has a 3.5mm male connector
    yes
    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
    In-line controls
    yes
    This pair of headphones includes in-line controls, the average pair of headphones does not. 36.6% of headphones support in-line controls.
  • 3.6x cheaper
    Sennheiser CX 3 00 is cheaper than the average pair of headphones (£25 vs £90).
    £25 vs £90
  • 15 dB SPL higher sound pressure level
    Sound pressure level
    118 dB SPL
    This pair of headphones has a higher sound pressure level than the average pair of headphones (118 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
    118 dB SPL vs 103 dB SPL
  • 57.5% more popular
    Sennheiser CX 3 00 is more popular than the average pair of headphones (9.24 vs 5.9).
    9.24 vs 5.87
  • 3.6x cheaper
    Sennheiser CX 3 00 is cheaper than the average pair of headphones (£25 vs £90).
    £25 vs £90
  • 57.5% more popular
    Sennheiser CX 3 00 is more popular than the average pair of headphones (9.24 vs 5.9).
    9.24 vs 5.87
  • 94.5% lower weight
    Weight
    12 g
    This pair of headphones is lighter than the average pair of headphones (12 g vs 218 g). The average pair of headphones weighs 218 g.
    12 g vs 218 g
  • Spatial audio support
    Spatial audio
    yes
    This pair of headphones supports spatial audio, the average pair of headphones does not. 15.9% of headphones support spatial audio.
  • 16 dB/mW higher sensitivity
    Sensitivity
    118 dB/mW
    This pair of headphones has a higher sensitivity than the average pair of headphones (118 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
    118 dB/mW vs 102 dB/mW
  • 15 dB SPL higher sound pressure level
    Sound pressure level
    118 dB SPL
    This pair of headphones has a higher sound pressure level than the average pair of headphones (118 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
    118 dB SPL vs 103 dB SPL
  • Direct 3.5 mm plug
    Has a 3.5mm male connector
    yes
    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
    In-line controls
    yes
    This pair of headphones includes in-line controls, the average pair of headphones does not. 36.6% of headphones support in-line controls.
  • 30.1 mm smaller driver size
    Driver size
    9.9 mm
    This pair of headphones has smaller driver size than the average pair of headphones (9.9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    9.9 mm vs 40 mm
  • Non-replaceable earpads
    Replaceable earpads
    no
    This pair of headphones has non-replaceable earpads, while the average pair of headphones has replaceable ones. 75.6% of headphones have replaceable earpads.
  • No voice assistant support
    Voice assistant support
    no
    This pair of headphones does not support voice assistants, the average pair of headphones does. 60.8% of headphones support voice assistants.
  • Fixed cable
    Detachable cable
    no
    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.
  • Not headset-ready
    Can be used as a headset
    no
    This pair of headphones is not headset-ready, while the average pair of headphones is. 84.8% of headphones can be used as headsets.
  • No battery indicator
    Battery level indicator
    no
    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.
  • 1 fewer microphones
    Number of microphones
    0
    This pair of headphones has fewer microphones than the average pair of headphones (0 vs 1). The average headphones have 1 microphones.
    0 vs 1
  • 0.2 % higher distortion
    THD (Total Harmonic Distortion)
    0.5 %
    This pair of headphones has a higher total harmonic distortion than the average pair of headphones (0.5 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    0.5 % vs 0.3 %
  • Non-replaceable earpads
    Replaceable earpads
    no
    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
    Detachable cable
    no
    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.
  • 30.1 mm smaller driver size
    Driver size
    9.9 mm
    This pair of headphones has smaller driver size than the average pair of headphones (9.9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
    9.9 mm vs 40 mm
  • 0.2 % higher distortion
    THD (Total Harmonic Distortion)
    0.5 %
    This pair of headphones has a higher total harmonic distortion than the average pair of headphones (0.5 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    0.5 % vs 0.3 %
  • No battery indicator
    Battery level indicator
    no
    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.
  • Not headset-ready
    Can be used as a headset
    no
    This pair of headphones is not headset-ready, while the average pair of headphones is. 84.8% of headphones can be used as headsets.
  • 1 fewer microphones
    Number of microphones
    0
    This pair of headphones has fewer microphones than the average pair of headphones (0 vs 1). The average headphones have 1 microphones.
    0 vs 1
  • No voice assistant support
    Voice assistant support
    no
    This pair of headphones does not support voice assistants, the average pair of headphones does. 60.8% of headphones support voice assistants.

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

H
head-fi.org
03/01/2015
Summary of the review
D
digit.in
01/08/2023
Summary of the review
T
technuovo.com
17/06/2015
Summary of the review
W
whathifi.com
03/09/2015
Summary of the review
E
expertreviews.co.uk
11/02/2015
Summary of the review
T
trustedreviews.com
03/11/2014
Summary of the review
B
businesstraveller.com
24/08/2015
Summary of the review
H
haus.de
07/04/2021
Summary of the review
R
roxarmy.com
13/11/2017
Summary of the review
T
tweakers.net
05/02/2016
Summary of the review

Third-party reviews

Based on 6,260 buyer reviews from online shops.
Reviews last updated: June 2026 · How we calculate this

What we like about Sennheiser CX 3 00

  • Punchy and powerful bass response suitable for pop and hip-hop
  • Detailed sound reproduction for the price point
  • Compact and lightweight design with excellent comfort for long sessions
  • Elliptical, tangle-resistant cable design
  • Effective passive noise isolation when a proper seal is achieved
  • Includes multiple ear tip sizes (XS, S, M, L) and a hard carry case
  • Low profile L-shaped 3.5mm jack for better durability in pockets

What we don't like about Sennheiser CX 3 00

  • Lack of an in-line microphone or remote controls
  • Midrange and treble can sometimes lack crispness or feel slightly recessed
  • Build quality concerns, particularly with cable durability over long-term use
  • Bass can occasionally become 'muddy' or overpowering on complex tracks
  • The angled plug may not fit well with certain thick phone cases
  • Silicone tips may slip out easily if the user is perspiring heavily

Verdict

The Sennheiser CX 3.00 is a lightweight (12g) in-ear headphone featuring high-quality dynamic drivers with neodymium magnets, delivering a frequency response of 17 Hz to 21,000 Hz and a sound pressure level of 118 dB. Characterised by its sleek, minimalist design and an 18-ohm impedance optimized for portable devices, it includes an elliptical tangle-free cable and a 3.5mm angled jack. Main pros include its powerful, bass-driven stereo sound, effective passive noise isolation, and a comfortable fit provided by four sizes of ear adapters. However, notable cons include the absence of an in-line microphone or remote for calls and mixed feedback regarding long-term cable durability.

Compare Sennheiser CX 3 00 with other products in the Headphones category

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