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Reviewed on Apr 26, 2016

Koss UR20 HEADPHONES REVIEW

Type : Over-ear
Enclosure : Closed-Back
Wireless : No
Noise-Cancelling : No
Mic : No
Transducer : Dynamic

The Koss UR-20 are below-average headphones that perform poorly in most of our test categories. They are moderately comfortable but have a weak, unexciting sound and leak quite a bit. People around you will hear your audio at high volumes, and they only provide passive isolation from ambient noise.

Test Results
Design 5.2
Sound 7.2
Isolation 5.1
Microphone 0
Active Features 0
Connectivity 4.8
Pros
  • Comfortable.
  • Lightweight over-ear design.
Cons
  • Poor noise isolation.
  • leaks a lot.
  • Below-average audio reproduction.
  • No audio controls.
  • Bass and treble delivery varies significantly across users. Sensitive to glasses.
  1. Update 2/16/2018: Converted to Test Bench 1.2.
  2. Update 8/10/2017: Converted to Test Bench 1.1. Learn more about our new versioned test bench system here.

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Summary

  • 5.6 Mixed Usage
  • 7.0 Critical Listening
  • 4.7 Commute/Travel
  • 4.7 Sports/Fitness
  • 5.5 Office
  • 5.7 TV
  • 5.5 Gaming
Mixed Usage 5.6

The Koss UR20 are not good as everyday headphones. They have a poor sound, poor isolation, and a cheap, fragile design.

Critical Listening 7.0

Average for critical listing. They have a decently balanced sound quality but a closed back design that limits their soundstage.

Commute/Travel 4.7

Not designed for commuting. They're cumbersome to carry around and do not isolate from ambient noise effectively. You will easily hear your surroundings, and these are not open back headphones.

Sports/Fitness 4.7

Not made for sports. The Koss UR 20 are bulky and big and don't have a decent control scheme. They will quickly fall off your head during exercise.

Office 5.5

The Koss UR20 are not good for office use. The poor seal of the earcups allows the chatter of even a moderately loud office to seep into your audio. Also, they leak quite a bit

TV 5.7

Average for home theater use. They have a decent sound for listening to music and watching movies. They also have no latency since they're wired. They have a longer audio cable than most, but they won't be the ideal headphones to comfortably watch movies from your couch unless you have an extension cord.

Test Results

Style

The Koss UR 20 are a little bulky. They have an all-black color scheme that's a little bland. The large circular ear cups and retro-designed headband may work for some but is not visually appealing.

7.5 Comfort
Weight : 0.55 lbs
Clamping Force
:
0.77 lbs

The Koss UR20 are quite comfortable. They're lightweight and large ear cups easily fit around the ears of most listeners. The headband design is good and the padding of the ear cups is soft. Unfortunately the pressure they apply around the ears, is uneven and can be uncomfortable for some.

0 Controls
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
4.0 Stability

These headphones are not at all stable. They move as you tilt your head, which means they easily fall off your ears if you're performing any moderate activity. They also do not have a detachable cable, which may get hooked on something and pull the headphones off your head, further decreasing stability.

5.2 Portability
L : 7.87 "
W : 7.09 "
H : 4.33 "
Volume : 241.64 Cu. Inches
Transmitter required : N/A

The Koss UR20 are not portable. They're big, bulky and don't fold into a smaller format or lay flat to take up less space. They will fit in your backpack but will be too cumbersome to carry around in anything else. They also do not come with a pouch or case, which is disappointing.

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

Build quality is average at best. The all plastic design does not feel very durable. The hinge mechanism is cheaply and poorly made. On the upside, the ear cups are relatively dense and the headband design is flexible. They can handle a fair amount of physical stress but are not as durable as some other headphones.

N/A Breathability
Avg.Temp.Difference : N/A
Cable
Detachable : No
Length : 8.33 ft
Connection : 1/8" TRS
Top
Headshots 1
Headshots 2
8.6 Bass
Std. Err.
:
2.01 dB
Low-Frequency Extension
:
17.82 Hz
Low-Bass
:
-0.2 dB
Mid-Bass
:
1.05 dB
High-Bass
:
3.46 dB
6.5 Mid
Std. Err.
:
4.62 dB
Low-Mid
:
4.56 dB
Mid-Mid
:
3.35 dB
High-Mid
:
-4.6 dB
6.4 Treble
Std. Err.
:
4.79 dB
Low-Treble
:
-3.34 dB
Mid-Treble
:
4.09 dB
High-Treble
:
-7.27 dB
6.0 Frequency Response Consistency
Avg. Std. Deviation
:
0.93 dB

The frequency response consistency is mediocre-at-best. Our measurements showed some inconsistencies in bass delivery across our human subjects. The maximum amount of deviation in the bass range is about 6dB, which is noticeable. In the treble range, they show some inconsistency and seem to be sensitive to positioning and placement.

6.9 Soundstage
PRTF Accuracy (Std. Dev.)
:
3.51 dB
PRTF Size (Avg.)
:
6.93 dB
PRTF Distance
:
17.6 dB
Openness
:
5.4
Acoustic Space Excitation
:
4.2
Correlated Crosstalk
:
-0.24 dB
8.5 Imaging
Weighted Group Delay
:
0.22
Weighted Amplitude Mismatch
:
0.65
Weighted Frequency Mismatch
:
1.95
Weighted Phase Mismatch
:
6.3
6.2 Total Harmonic Distortion
Weighted THD @ 90
:
11.039
Weighted THD @ 100
:
100.847
4.5 Noise Isolation
Isolation Audio
:
Overall Attenuation
:
-8.68 dB
Bass
:
0.61 dB
Mid
:
-4.39 dB
Treble
:
-22.55 dB
Self-Noise
:
0 dB

Poor isolation. These non-noise cancelling headphones block very little noise in the bass and mid regions. In the treble range, they provide a decent amount of isolation, reaching the maximum of -28dB at 8KHz.

6.3 Leakage
Leakage Audio
:
Overall Leakage @ 1ft
:
43.31 dB

Poor leakage. The overall level of leakage is on the high side and the leakage happens throughout a broad frequency range, from 300Hz to 4KHz.

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 Wireless Range
Obstructed Range
:
N/A
Line of Sight Range
:
N/A
10 Latency
Default Latency
:
0 ms
aptX Latency
:
N/A
aptX(LL) Latency
:
N/A
N/A Battery
Battery Type
:
N/A
Battery Life
:
N/A
Charge Time
:
N/A
Power Saving Feature
:
N/A
Audio while charging
:
N/A
Passive Playback
:
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.

0 Bluetooth
Bluetooth Version
:
N/A
Multi-Device Pairing
:
N/A
NFC Pairing
:
N/A
7.2 Wired
OS Compatibility
:
Not OS specific
Analog Audio
:
Yes
USB Audio
:
No
PS4 Compatible
:
Audio Only
Xbox One Compatible
:
Audio Only
PC Compatible
:
Audio Only
0 Base/Dock
Type
:
N/A
Optical Input
:
N/A
Line In
:
N/A
Line Out
:
N/A
USB Input
:
N/A
RCA Input
:
N/A
PS4 Compatible
:
N/A
Xbox One Compatible
:
N/A
PC Compatible
:
N/A
Power Supply
:
N/A
Dock Charging
:
N/A
In the box

  • Koss UR-20 Headphones
  • 1/8" to 1/4" Adapter

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