Reviewed on Aug 01, 2017

Koss KSC75 HEADPHONES REVIEW

Usage Ratings - Version 1.3
5.3
Mixed Usage
6.9
Neutral Listening
4.3
Commute/Travel
6.3
Sports/Fitness
4.8
Office
4.2
Wireless Gaming
6.0
Wired Gaming
1.5
Phone Call
Type : On-ear
Enclosure : Open-Back
Wireless : No
Noise-Cancelling : No
Mic : No
Transducer : Dynamic

The Koss KSC75 are budget on-ear headphones with a stable ear-hook design. They're compact and will easily fit into your pockets. They also have an open design and a decently well-balanced sound which makes them a very affordable critical listening option but they may lack a bit of bass for more casual listeners. Unfortunately, they're not very durable and look a little cheap.

Test Results
Design 6.1
Isolation 2.0
Microphone 0
Active Features 0
Connectivity 3.6
Pros
  • Above-average sound quality.
  • Stable and portable design.
Cons
  • Poor noise isolation, by design.
  • Subpar build quality.
  • Leaky at average volumes, by design.
  1. Update 11/6/2019: Converted to Test Bench 1.3.
  2. Update 2/16/2018: Converted to Test Bench 1.2.
  3. Update 8/10/2017: Converted to Test Bench 1.1. Learn more about our new versioned test bench system here.

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6.1

Design

The KSC75 aren't the best-looking headphones but they're lightweight and have a stable fit. Thanks to their ear-hook design they will rarely fall off your ears unless the non-detachable audio cable gets hooked on something. They're also easy to carry around on your person but do not come with a case. Unfortunately, they do not have any controls and their build quality does not feel very durable. The cable is flimsy and the ear cups look and feel cheap.

Style

The KSC75 are budget clip-on on-ears. They're only offered in one color scheme and feel somewhat like airline headphones. They won't stand out and won't be a fashion statement. However, their simple utilitarian design may appeal to some listeners.

6.5 Comfort
Weight : 0.1 lbs
Clamping Force
:
0 lbs

The KSC75 are lightweight and moderately comfortable headphones. They're on-ears with an ear-hook design that's stable but slightly uncomfortable. The hooks put a bit pressure behind your ears at first, and it's particularly worse if you wear glasses. However, the hooks stop feeling as intrusive after having the headphones on for a while.

0 Controls
OS Compatibility
:
Not OS specific
Ease of use : N/A
Feedback : N/A
Call/Music Control : No
Volume Control : No
Microphone Control : N/A
Channel Mixing
:
N/A
Noise Canceling Control : N/A
Talk-Through
:
N/A
Additional Buttons : N/A
8.8 Breathability
Avg.Temp.Difference : 1.2 C
7.7 Portability
L : 2.5 "
W : 3.3 "
H : 2 "
Volume : 17 Cu. Inches
Transmitter required : N/A

These headphones have a small footprint and are quite easy to carry around on your person. They have a simple ear hook design, so they do not have a headband, and you can easily fold and fit them into your pockets. They do not come with a good case however, which is a little disappointing.

0 Case
Type : No case
L : N/A
W : N/A
H : N/A
Volume : N/A
5.5 Build Quality

The build quality of these headphones is sub-par and feels cheap. The ear cups are not particularly dense, and they have thin non-replaceable audio cables. They're lightweight headphones, so they won't get damaged by a shoulder height drop. However, their build quality doesn't feel durable which is to be expected for their budget price range. On the upside, they also benefit from the Koss limited lifetime warranty.

7.5 Stability

The KSC75 have an ear hook design that's stable enough to run with. They're lightweight and barely move once you achieve a good fit. Unfortunately, they have a non-detachable cable that may get caught on something and yank the headphones off your ears. You can limit this issue by passing the cable under your clothes, but this means they won't be the ideal headphones for the gym or strenuous exercises.

Headshots 1
Headshots 2
Top

Sound

They have an excellent Mid Range, an open Soundstage, and perform very consistently across multiple humans. However, their Bass lacks low-end thump and rumble, their Mid Range sounds slightly muddy and their Treble is on the bright side. They also have a mediocre distortion performance, especially in the Bass Range.

Sound Profile
Neutral
:
6.6
Bass-Heavy
:
2.3
Warm
:
4.8
Bright
:
7.7
7.0 Peaks/Dips
Peaks
:
1.97 db
Dips
:
1.49 db
8.9 Frequency Response Consistency
Avg. Std. Deviation
:
0.22 dB

Very good Consistency performance. The maximum amount of deviation in the Bass Range across our human subjects is +/-3dB at 20Hz which is decent. However, the Mid and Treble Ranges show excellent consistency up to 10KHz with very little deviation.

7.4 Imaging
Weighted Group Delay
:
0.27
Weighted Amplitude Mismatch
:
0.14
Weighted Frequency Mismatch
:
2.92
Weighted Phase Mismatch
:
24.3
5.4 Soundstage
PRTF Accuracy (Std. Dev.)
:
5.07 dB
PRTF Size (Avg.)
:
-1.74 dB
PRTF Distance
:
7.87 dB
Openness
:
9.8
Acoustic Space Excitation
:
6.1
6.8 Weighted Harmonic Distortion
WHD @ 90
:
0.219
WHD @ 100
:
0.715
2.0

Isolation

The HSC75 have an open design not meant to isolate listeners from ambient noise. Noise easily seeps into the ear cups which produces a more immersive listening experience but also means they won't be ideal for loud environments, like commuting via public transit. They also leak quite a bit and would not be suitable to use in quiet settings, as they might distract the people around you.

0.6 Noise Isolation
Isolation Audio
:
Overall Attenuation
:
-0.66 dB
Bass
:
-0.05 dB
Mid
:
0.78 dB
Treble
:
-2.54 dB

Poor Isolation. Due to the open-back design, these headphones isolate very little. They provide no reduction in outside noise in the Bass and Mid Ranges, and provide only 3dB of isolation in the Treble Range.

4.7 Leakage
Leakage Audio
:
Overall Leakage @ 1ft
:
51.16 dB

Poor Leakage performance. The significant portion of Leakage with these headphones is between 1KHz and 20KHz which is a broad range. Additionally, the overall level of Leakage is loud.

0

Microphone

Integrated
:
N/A
In-line
:
N/A
Boom
:
N/A
Detachable Boom
:
N/A
0 Recording Quality
Recorded Speech
:
N/A
LFE
:
N/A
FR Std. Dev.
:
N/A
HFE
:
N/A
Weighted THD
:
N/A
Gain
:
N/A
0 Noise Handling
Speech + Pink Noise : N/A
Speech + Subway Noise : N/A
SpNR
:
N/A
0

Active Features

No active features.

N/A Battery
Battery Type
:
N/A
Continuous Battery Life
:
N/A
Additional Charges
:
N/A
Total Battery Life
:
N/A
Charge Time
:
N/A
Power Saving Feature
:
N/A
Audio while charging
:
N/A
Passive Playback
:
N/A
Charging Port : N/A
0 App Support
App Name : N/A
iOS : N/A
Android : N/A
Mac OS : N/A
Windows : N/A
Equalizer
:
N/A
ANC control
:
N/A
Mic Control : N/A
Room effects
:
N/A
Playback control
:
N/A
Button Mapping : N/A
Surround Sound : N/A

No Compatible app.

3.6

Connectivity

0 Bluetooth
Bluetooth Version
:
N/A
Multi-Device Pairing
:
N/A
NFC Pairing
:
N/A
Line of Sight Range
:
N/A
Default Latency
:
N/A
aptX Latency
:
N/A
aptX(LL) Latency
:
N/A
0 Non-Bluetooth Wireless
Non-BT Line of Sight Range
:
N/A
Non-BT Latency
:
N/A
9.0 Wired
Analog Audio
:
Yes
USB Audio
:
No
Detachable : No
Length : 4.3 ft
Connection : 1/8" TRS
Wired Latency
:
0 ms
PC / PS4 Compatibility
PC / PS4 Analog
:
Audio Only
PC / PS4 Wired USB
:
No
PC / PS4 Non-BT Wireless
:
No
Xbox One Compatibility
Xbox Analog
:
Audio Only
Xbox Wired USB
:
No
Xbox Wireless
:
No
0 Base/Dock
Type
:
N/A
USB Input
:
N/A
Line In
:
N/A
Line Out
:
N/A
Optical Input
:
N/A
RCA Input
:
N/A
Dock Charging
:
N/A
Power Supply
:
N/A

In the box

  • Koss KSC75 Headphones
  • Manual

Compared to other Headphones

See our recommendations for the best on-ear headphones, the best headphones under $20, and the best on-ear wireless headphones.

Koss Porta Pro KTC
SEE PRICE
Amazon.com

The Koss Porta Pro are a slightly better headphone overall when compared to the Koss KSC75. The Porta Pro have a better-balanced sound and a more comfortable on-ear fit that you can wear for longer than the KSC75. The Porta Pro also have a better more durable design, although not by much. On the upside, the KSC75 are bit more portable and have a slightly more stable design if you plan to use them for sports.

5.3 Mixed Usage

The KSC75 like the Koss Porta Pros are not the most versatile headphones. They're flimsy and lacking in features. They also don't isolate much and leak due to their open design. However, they produce a decently balanced sound that lacks a little bass but should be good enough for most listeners. This makes them a decent option for critical listening but they might not be well-suited for other use cases.

6.9 Neutral Listening

The KSC75 Have a decently balanced sound. They have a good reproduction of Mid Range frequencies so instruments and vocals sound full and decently balanced throughout the mix. They lack a bit of Bass and their Treble Range is a bit inconsistent so they may sound overly sharp on some tracks. They have a relatively good Soundstage despite the small ear cups thanks to their open design which makes them a decent, budget option for neutral listening but they won't be the ideal headphone for fans of Bass.

4.3 Commute/Travel

Not ideal for commuting. They do not block a lot of ambient noise and won't perform well in loud environments.

6.3 Sports/Fitness

Mediocre at best for sports. They're lightweight, compact and have a stable clip-on design. The open ear cups also allows you to monitor your environment. However their non-detachable cable may yank the headphones off your ears, they have no control scheme and they're also not as breathable or as comfortable as the Koss Porta Pro.

4.8 Office

Subpar for office use. They leak at higher volumes and don't prevent the chatter of a lively office from seeping into your audio.

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