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Koss KPH30i Review | 93 Data compared

Avg. price in UK: ~£35
Avg. price in US: ~$30
Form factor: on-ear
Connectivity: wired
Battery life: N/A hours
Active noise cancellation (ANC): no

Koss KPH30i review. Compare 93 technical specifications and user reviews to see how it ranks among headphones and if it is worth buying.

5.2

Good

4.2

Poor

9.1

Exceptional

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%
8.7
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
4.7
Workout
Score components:
28.0%
8.7
Weight
24.0%
1.0
Water resistance
20.0%
4.0
IP rating
16.0%
0.0
Battery life
12.0%
10
Can be used as a headset

Best prices in UK

Best rankings

#429 in Best Wired Headphones
#1006 in Best Headphones with Mic

Verdict

The Koss KPH30i is a lightweight, open-air on-ear headphone featuring a 60-ohm impedance, a frequency response of 15–25,000 Hz, and a sensitivity of 101 dB SPL. It utilizes a 35mm dynamic driver housed in a retro-inspired, all-plastic chassis with a patented silicone suspension headband for adjusted comfort. Main characteristics include a warm, balanced sound signature with punchy mid-bass and a spacious soundstage that punches well above its budget price point, further complemented by an in-line microphone and remote on its 4-foot rugged cable. Pros include its exceptional value-to-performance ratio, non-fatiguing audio suitable for long sessions, and the security of a limited lifetime warranty. However, notable cons include a fragile plastic build prone to snapping, non-replaceable cables, and a lack of sound isolation due to the open-back design.

Technical Specifications of Koss KPH30i

Overall score

5.2

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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.

Sound

3.2

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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

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

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

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

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Calls & Controls

4.8

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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

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

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

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

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

N/A

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Connectivity

6.2

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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

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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Features

4.1

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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

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

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Battery

4.4

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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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Design

7.2

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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

Koss

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

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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Koss KPH30i vs the average headphone

Why is Koss KPH30i better than the average headphone?

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Spatial audio support
Koss KPH30i supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
What it is: Supports immersive surround sound playback
When it matters: When movies, games, and immersive mixes are part of your listening.
Importance: MEDIUM
Koss KPH30i supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
65.6% lower weight
Koss KPH30i is lighter than the average headphone (75 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
Koss KPH30i is lighter than the average headphone (75 g vs 218 g). The average pair of headphones weighs 218 g.75 g vs 218 g
Direct 3.5 mm plug
Koss KPH30i 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
Koss KPH30i 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
Koss KPH30i 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
Koss KPH30i includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
5,000 Hz higher treble extension
Koss KPH30i has a higher highest frequency than the average headphone (25,000 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
Koss KPH30i has a higher highest frequency than the average headphone (25,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.25000 Hz vs 20000 Hz
Quick mic mute
Koss KPH30i includes a quick mic mute, the average headphone does not. 33.5% of headphones support a mute function.
What it is: Ability to mute microphone during calls
When it matters: When you need to silence the mic quickly during meetings or multiplayer games.
Importance: LOW
Koss KPH30i includes a quick mic mute, the average headphone does not. 33.5% of headphones support a mute function.
Open-back design
Koss KPH30i uses an open-back design, while the average headphone does not. 9.3% of headphones have an open-back design.
What it is: Shows whether the headphones use an open-back housing that lets air and sound pass through more freely than a closed design.
When it matters: When you listen in quiet places and care more about spacious sound than blocking outside noise or preventing sound leakage.
Importance: MEDIUM
Koss KPH30i uses an open-back design, while the average headphone does not. 9.3% of headphones have an open-back design.
3 Hz lower bass extension
Koss KPH30i has a lower lowest frequency than the average headphone (15 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
Koss KPH30i has a lower lowest frequency than the average headphone (15 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.15 Hz vs 18 Hz
65.6% lower weight
Koss KPH30i is lighter than the average headphone (75 g vs 218 g). The average pair of headphones weighs 218 g.
Open-back design
Koss KPH30i uses an open-back design, while the average headphone does not. 9.3% of headphones have an open-back design.
Spatial audio support
Koss KPH30i supports spatial audio, the average headphone does not. 30.7% of headphones support spatial audio.
5,000 Hz higher treble extension
Koss KPH30i has a higher highest frequency than the average headphone (25,000 Hz vs 20,000 Hz). The average headphones reach a highest frequency of 20,000 Hz.
3 Hz lower bass extension
Koss KPH30i has a lower lowest frequency than the average headphone (15 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
Direct 3.5 mm plug
Koss KPH30i 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
Koss KPH30i includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
Quick mic mute
Koss KPH30i includes a quick mic mute, the average headphone does not. 33.5% of headphones support a mute function.

Calls & Controls

Why is Koss KPH30i worse than the average headphone?

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Fixed cable
Koss KPH30i has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
2.4 higher clamp force
Koss KPH30i has a higher clamp force than the average headphone (6.7 vs 4.3). The average headphones have a clamp force of 4.3.
Tangle-prone cable
Koss KPH30i uses a tangle-prone cable, while the average headphone is easier to manage. 64.2% of headphones use a tangle-free cable.
No passive noise reduction
Koss KPH30i does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
5 mm smaller driver size
Koss KPH30i has smaller driver size than the average headphone (35 mm vs 40 mm). The average headphones use a driver size of 40 mm.
No passive noise reduction
Koss KPH30i 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
Koss KPH30i does not offer passive noise reduction, while the average headphone does. 82.7% of headphones have passive noise reduction.
Fixed cable
Koss KPH30i 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
Koss KPH30i has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
5 mm smaller driver size
Koss KPH30i has smaller driver size than the average headphone (35 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
Koss KPH30i has smaller driver size than the average headphone (35 mm vs 40 mm). The average headphones use a driver size of 40 mm.35 mm vs 40 mm
2.4 higher clamp force
Koss KPH30i has a higher clamp force than the average headphone (6.7 vs 4.3). The average headphones have a clamp force of 4.3.
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
Koss KPH30i has a higher clamp force than the average headphone (6.7 vs 4.3). The average headphones have a clamp force of 4.3.6.7 vs 4.3
Tangle-prone cable
Koss KPH30i uses a tangle-prone cable, while the average headphone is easier to manage. 64.2% of headphones use a tangle-free cable.
What it is: Cable designed to resist tangling
When it matters: When you often carry wired headphones in a bag or pocket.
Importance: LOW
Koss KPH30i uses a tangle-prone cable, while the average headphone is easier to manage. 64.2% of headphones use a tangle-free cable.

Graphic comparison of Koss KPH30i and

Attribute category

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Third-party reviews

United Kingdom

United States

(Reviews last updated: June 2026)

What customers like about Koss KPH30i?

Exceptional price-to-performance ratio, often punching well above its cost
Warm and balanced sound signature with a particularly detailed and natural midrange
Wide and expansive soundstage for an on-ear design
Extremely lightweight and comfortable for long listening sessions due to the patented silicone suspension headband
Includes a built-in microphone and in-line remote for calls and playback control
Backed by Koss's limited lifetime warranty

What customers dislike about Koss KPH30i?

Fragile plastic build quality; the headband is prone to snapping if handled roughly
Open-back design results in high sound leakage and zero passive noise isolation
The thin, non-detachable cable is perceived as a potential failure point
Sub-bass roll-off is noticeable, which may disappoint 'bassheads' or EDM listeners
Stock foam pads can feel scratchy or thin, leading many users to recommend immediate pad swaps (e.g., Yaxi or Grado pads)
Lacks a folding mechanism, making it less compact for travel than other models like the Porta Pro

Expert reviews

samma3a.com

12/09/2019

Koss KPH30i On-Ear Headphones Review - Samma3a Tech

The Koss KPH30i on-ear headphones deliver exceptional raw value and impressive sound quality for a $30 price tag, easily living up to their internet hype. Visually, they feature a lightweight, all-plastic retro design weighing just 75 grams, featuring a silicone suspension strap and a flexible, though somewhat flimsy, headband adjustment system. The sonic character leans toward a...Read more

homestudiobasics.com

21/11/2025

The Koss KPH30i Will Change Your Life - Home Studio Basics Would you like more reviews from YouTube or specifically written publications?

The Koss KPH30i is widely celebrated in the audiophile community as an exceptional semi-open back, on-ear headphone that offers incredible value for its $20–$30 price range. The reviewer notes that its sound signature is remarkably well-balanced, featuring a punchy mid-bass that avoids bloating, a pristine mid-range that highlights vocals and instruments, and a crisp, detailed...Read more

headphonesty.com

03/09/2021

Review: Koss KPH30i – You Should Meet the New Guy - Headphonesty

The Headphonesty review characterizes the Koss KPH30i as an exceptional value, praising their smooth, engaging sound, open soundstage, and lightweight, comfortable design with an inline microphone. However, the review notes significant limitations, including a lack of sub-bass, only average resolution, a fragile plastic frame, and non-replaceable ear pads.

headfonics.com

03/04/2020

KOSS KPH30i Review - Headfonics

The Headfonics review of the Koss KPH30i highlights these budget-friendly, open-back headphones as providing a balanced, pleasurable listening experience with articulate, lean mid-bass and impressive soundstage depth. Key advantages include exceptional vocal clarity, clear instrument separation comparable to higher-end models, and a comfortable, lightweight design, making them an...Read more

xander51.medium.com

26/04/2019

Koss KPH30i Headphones Review - Alex Rowe - Medium

The Koss KPH30i is reviewed as an exceptional $30 open-back headphone, offering audio performance comparable to models in the $150 range with a functional, no-gimmick design. The review highly praises the value for money, highlighting the clear, competitive sound quality as a major pro. Medium·Alex RoweHowever, the review notes a significant con regarding the construction, stating...Read more

digitec.ch

14/11/2019

Astro A50 review (direct comparison with Koss KPH30i)

The Digitec review of the Astro A50 praises the premium wireless headset for its exceptional comfort, redesigned, easy-to-use charging dock, and improved microphone quality. Key advantages include a crisp sound signature, reliable 2.4 GHz connectivity, and automatic power-saving motion sensors. However, the review notes drawbacks such as a high price point, outdated micro-USB...Read more

tech

14/05/2021

Koss KPH30i Review: Cheap Headphones with Incredible Sound", "Koss KPH30i: Small and Cheap but They Sound Great - Review", "Koss KPH30i: The Cheap Hea...

The provided link is incomplete, preventing a summary of the review's specific pros, cons, and technical details. Please provide the full URL or text to receive a detailed analysis. AI can make mistakes, so double-check responses

Video reviews

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