Sennheiser Px 100 III Review | 93 Data compared

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  • Avg. price in UK: ~£70
  • Avg. price in US: ~$90
  • Form factor: on-ear
  • Connectivity: wired
  • Battery life: N/A hours
  • Active noise cancellation (ANC): no

Sennheiser Px 100 III review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

4.1

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%

4.1

Technical Score

20.0%

?

User score

Poor
4.1

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%

3.1

Sound

20.0%

4.1

Features

10.0%

7.5

Design

8.0%

6.2

Connectivity

6.0%

4.9

Battery

4.0%

4.9

Calls & Controls

Poor
?

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%

?

User reviews

30.0%

?

Popularity

  • 2.1
    Gaming

    Score components:

    35.0%

    0.0

    Audio latency

    25.0%

    0.0

    Low-latency game mode

    20.0%

    10

    Can be used as a headset

    12.0%

    1.0

    Noise-canceling microphone

    8.0%

    0.0

    Battery life

  • 1.8
    Travel

    Score components:

    28.0%

    1.0

    Active noise cancellation (ANC)

    24.0%

    0.0

    Battery life

    18.0%

    8.4

    Weight

    16.0%

    0.0

    Multipoint support

    14.0%

    0.0

    Ambient sound mode

  • 2.7
    Calls

    Score components:

    28.0%

    1.0

    Noise-canceling microphone

    24.0%

    10

    Can be used as a headset

    18.0%

    0.0

    Multipoint support

    16.0%

    0.0

    Battery life

    14.0%

    0.0

    Companion app

  • 6.5
    Workout

    Score components:

    28.0%

    8.4

    Weight

    24.0%

    9.0

    Water resistance

    20.0%

    4.0

    IP rating

    16.0%

    0.0

    Battery life

    12.0%

    10

    Can be used as a headset

  • No image
No image

Best prices in UK

    N/A~ £70

Best rankings

?

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

Verdict

The Sennheiser PX 100-III (also known as the PX 100-IIi) is a lightweight, open-back supra-aural headphone featuring a steel-reinforced foldable headband and a frequency response of 15–27,000 Hz. These portable on-ear headphones utilize neodymium magnets for low distortion and high sound pressure levels (114 dB), delivering a warm sound signature with a propulsive bass response and clear, detailed imaging across a 32-ohm impedance. Its primary pros include an extremely compact 'Fold n' Flip' design for travel, a comfortable padded headband, and an integrated three-button in-line remote with a microphone for hands-free calls and music control. However, available cons include significant sound leakage due to the open-back design, a fixed single-sided cable that lacks a detachable option, and a mid-bass emphasis that can occasionally muddy the detail in classical or jazz tracks.

Technical Specifications of Sennheiser Px 100 III

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%

?

Sound

20.0%

?

Features

10.0%

?

Design

8.0%

?

Connectivity

6.0%

?

Battery

4.0%

?

Calls & Controls

4.1
Sennheiser Px 100 III has a technical score of 4.14 points, which is lower than that of 84.7% 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%

0.0

User reviews

30.0%

1.0

Popularity

?
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.
1.0
Sennheiser Px 100 III has a popularity of 1 points, which is lower than 72.7% 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%

4.1

Overall score

40.0%

10

Price

5.9
Sennheiser Px 100 III has a quality-to-price ratio of 5.9 points, which is lower than 85.5% 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
Sennheiser Px 100 III 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

36.5 mm
Sennheiser Px 100 III uses a driver size of 36.5 mm, smaller driver size than 72.9% of headphones and equal to 0.1% 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
Sennheiser Px 100 III 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

15 Hz
Sennheiser Px 100 III reaches a lowest frequency of 15 Hz, lower lowest frequency than 58.5% of headphones and equal to 5.7% of headphones.
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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
Sennheiser Px 100 III 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
Sennheiser Px 100 III 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
Sennheiser Px 100 III 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
Sennheiser Px 100 III 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

wired
Sennheiser Px 100 III supports wired connectivity, equal to 52.6% of headphones.
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

N/A
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

N/A
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

N/A
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

N/A
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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
Sennheiser Px 100 III 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

N/A
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
Sennheiser Px 100 III supports voice assistants. 39.2% of headphones support voice assistants.
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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

N/A
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

N/A
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

N/A
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

N/A
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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

Sennheiser
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

on-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

85 g
Sennheiser Px 100 III weighs 85 g, lighter than 79.6% of headphones and equal to 0.1% 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

open-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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Sennheiser Px 100 III vs the average headphone

  • 61% lower weight
    Sennheiser Px 100 III is lighter than the average headphone (85 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

    Sennheiser Px 100 III is lighter than the average headphone (85 g vs 218 g). The average pair of headphones weighs 218 g.85 g vs 218 g
  • 12 dB/mW higher sensitivity
    Sennheiser Px 100 III has a higher sensitivity than the average headphone (114 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

    Sennheiser Px 100 III has a higher sensitivity than the average headphone (114 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.114 dB/mW vs 102 dB/mW
  • Direct 3.5 mm plug
    Sennheiser Px 100 III includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
    What it is: Shows whether the headphones end in a built-in 3.5 mm male plug instead of relying on a separate detachable cable.
    When it matters: When direct wired compatibility with older devices or adapters matters.

    Importance: MEDIUM

    Sennheiser Px 100 III includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
  • In-line controls
    Sennheiser Px 100 III includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
    What it is: Controls available on in-line remote of wired cable
    When it matters: When your wired setup depends on cable-mounted buttons or call controls.

    Importance: LOW

    Sennheiser Px 100 III includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
  • 0.2 % lower distortion
    Sennheiser Px 100 III has a lower total harmonic distortion than the average headphone (0.1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
    What it is: Percentage of harmonic distortion in audio output
    When it matters: When cleaner sound reproduction matters at louder volumes.

    Importance: LOW

    Good value: <=1%

    Sennheiser Px 100 III has a lower total harmonic distortion than the average headphone (0.1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.0.1 % vs 0.3 %
  • 7,000 Hz higher treble extension
    Sennheiser Px 100 III has a higher highest frequency than the average headphone (27,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
    What it is: Highest audio frequency the headphones can reproduce
    When it matters: When treble extension and overall frequency reach matter to you.

    Importance: MEDIUM

    Good value: >=24000 Hz

    Sennheiser Px 100 III has a higher highest frequency than the average headphone (27,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.27000 Hz vs 20000 Hz
  • Foldable design
    Sennheiser Px 100 III has a foldable design, the average headphone does not. 61% of headphones are foldable.
    What it is: Earcups or headband can fold for compact storage
    When it matters: When you travel often and want easier storage in a bag.

    Importance: LOW

    Sennheiser Px 100 III has a foldable design, the average headphone does not. 61% of headphones are foldable.
  • Sidetone support
    Sennheiser Px 100 III supports sidetone, the average headphone does not. 29.7% of headphones support sidetone.
    What it is: Lets users hear their own voice during calls
    When it matters: When long calls matter and you do not want to sound unnaturally loud in your own ears while speaking.

    Importance: LOW

    Sennheiser Px 100 III supports sidetone, the average headphone does not. 29.7% of headphones support sidetone.
  • 61% lower weight
    Sennheiser Px 100 III is lighter than the average headphone (85 g vs 218 g). The average pair of headphones weighs 218 g.
  • Foldable design
    Sennheiser Px 100 III has a foldable design, the average headphone does not. 61% of headphones are foldable.
  • Open-back design
    Sennheiser Px 100 III uses an open-back design, while the average headphone does not. 9.3% of headphones have an open-back design.
  • 12 dB/mW higher sensitivity
    Sennheiser Px 100 III has a higher sensitivity than the average headphone (114 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
  • 0.2 % lower distortion
    Sennheiser Px 100 III has a lower total harmonic distortion than the average headphone (0.1 % vs 0.3 %). The average headphones have total harmonic distortion of 0.3 %.
  • 7,000 Hz higher treble extension
    Sennheiser Px 100 III has a higher highest frequency than the average headphone (27,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
  • 3 Hz lower bass extension
    Sennheiser Px 100 III has a lower lowest frequency than the average headphone (15 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
  • 11 dB SPL higher sound pressure level
    Sennheiser Px 100 III has a higher sound pressure level than the average headphone (114 dB SPL vs 103 dB SPL). The average headphones reach a sound pressure level of 103 dB SPL.
  • Direct 3.5 mm plug
    Sennheiser Px 100 III includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
  • In-line controls
    Sennheiser Px 100 III includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
  • Sidetone support
    Sennheiser Px 100 III supports sidetone, the average headphone does not. 29.7% of headphones support sidetone.
  • Fixed cable
    Sennheiser Px 100 III has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • 21 mm tighter earcup width
    Sennheiser Px 100 III has tighter earcup width than the average headphone (22 mm vs 43 mm). The average headphones offer an inner earcup width of 43 mm.
  • No passive noise reduction
    Sennheiser Px 100 III does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
  • 3.5 mm smaller driver size
    Sennheiser Px 100 III has smaller driver size than the average headphone (36.5 mm vs 40 mm). The average headphones use a driver size of 40 mm.
  • 6 years older release date
    Sennheiser Px 100 III was released earlier than the average headphone (2,011 vs 2,017). The average headphones were released in 2,017.
    September 2011
  • No passive noise reduction
    Sennheiser Px 100 III does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
    What it is: Shows whether the headphones reduce outside noise through physical sealing, fit, and materials rather than active electronics.
    When it matters: When you want better isolation from fit and seal alone, even with ANC turned off or not available.

    Importance: MEDIUM

    Sennheiser Px 100 III does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
  • Fixed cable
    Sennheiser Px 100 III has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
    What it is: Cable can be removed or replaced
    When it matters: When you care about easier cable replacement, simpler storage, or the option to swap to shorter, longer, or upgraded leads.

    Importance: MEDIUM

    Sennheiser Px 100 III has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
  • 3.5 mm smaller driver size
    Sennheiser Px 100 III has smaller driver size than the average headphone (36.5 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

    Sennheiser Px 100 III has smaller driver size than the average headphone (36.5 mm vs 40 mm). The average headphones use a driver size of 40 mm.36.5 mm vs 40 mm
  • 21 mm tighter earcup width
    Sennheiser Px 100 III has tighter earcup width than the average headphone (22 mm vs 43 mm). The average headphones offer an inner earcup width of 43 mm.
    What it is: Internal width of the earcup cavity
    When it matters: When earcup fit affects comfort and pressure around your ears.

    Importance: MEDIUM

    Sennheiser Px 100 III has tighter earcup width than the average headphone (22 mm vs 43 mm). The average headphones offer an inner earcup width of 43 mm.22 mm vs 43 mm
  • 4.65x less popular
    Sennheiser Px 100 III is less popular than the average headphone (1.00 vs 4.646).
    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.
    Sennheiser Px 100 III is less popular than the average headphone (1.00 vs 4.646).1 vs 4.65
  • 14.2% worse value for money
    Sennheiser Px 100 III has worse value for money than the average headphone (5.90 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.
    Sennheiser Px 100 III has worse value for money than the average headphone (5.90 vs 6.736).5.9 vs 6.74
  • 6 years older release date
    Sennheiser Px 100 III was released earlier than the average headphone (2,011 vs 2,017). The average headphones were released in 2,017.
    September 2011
    What it is: Official release or launch date of the model
    When it matters: When you want a newer model for fresher features, longer support life, or simply to avoid buying into an older generation.

    Importance: LOW

    Good value: >=2020

    Sennheiser Px 100 III was released earlier than the average headphone (2,011 vs 2,017). The average headphones were released in 2,017.2011 vs 2017

Graphic comparison of Sennheiser Px 100 III and

Attribute category
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Third-party reviews

What customers like about Sennheiser Px 100 III?

  • Extremely lightweight and comfortable for long listening sessions
  • Highly portable, foldable design that can fit in a pocket
  • Warm and smooth sound signature with punchy bass
  • Single-sided cable reduces tangling compared to earlier models
  • Integrated three-button remote and microphone for hands-free calls
  • Reinforced steel-core headband for improved durability
  • Open-back design provides a more natural, spacious soundstage

What customers dislike about Sennheiser Px 100 III?

  • Open design offers zero noise isolation and leaks sound to others
  • Strong mid-bass can sometimes muddy the sound in jazz or classical tracks
  • Foam earpads tend to disintegrate over time and require replacement
  • Flimsy, thin cabling can be prone to snagging or internal breakage
  • Lack of 'treble sparkle' or high-end detail compared to competitors
  • Vertical plug design can be less durable than an L-shaped connector
  • Replacement of the original hard carrying case with a soft pouch

Expert reviews

G
gadgetspeak.com
12/04/2012

The Sennheiser PX100-IIi is a compact, folding over-the-ear headset designed specifically to integrate with Apple's iPhone, though it supports any standard 3.5mm audio jack connection. A major pro highlighted in the GadgetSpeak review is its highly portable form factor; it folds down tightly into a small drawstring canvas pouch, making it easy to store. It features clear left and...Read more

C
cnet.com
31/03/2011

The Sennheiser PX 100-IIi ($89) is an open-backed, lightweight, portable headphone model that improves upon its predecessor with a stealthy all-black profile and reinforced design updates. It features an integrated three-button in-line remote and microphone designed specifically for navigating music and making hands-free calls on iOS devices. Built for travel-friendly portability,...Read more

M
macwelt.de
17/11/2011

The Sennheiser PX 100-IIi is an updated classic open-back headphone that introduces a highly functional inline remote and microphone tailored for Apple devices. A key structural advantage of this model is its updated cable routing design, which now feeds into only a single side (the left headphone) to reduce tangles. The integrated remote sits at a comfortable height below the chin,...Read more

A
areadvd.de
05/02/2007

The Areadvd review concludes that the Sennheiser PX-100 is an exceptionally talented, open-back dynamic mini-headphone that offers an immense acoustic upgrade over cheap factory-bundled stock earbuds. Retailing at a market price of around €40, it stands out for its high portability, featuring a clever, legally protected folding design, a 1.2-meter Kevlar-reinforced copper cable, and...Read more

T
tweakers.net
06/04/2011

This Tweakers user review highlights the Sennheiser PX 100 Silver as a highly portable, budget-friendly on-ear headphone purchased for under €30. The reviewer praises its efficient foldable design, surprising physical durability over a year of heavy travel, and high-quality sound for the price. Conversely, the review notes that while the design is portable, the open-back, on-ear...Read more

Video reviews

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