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.
- Lightweight over-ear design.
- Poor noise isolation.
- leaks a lot.
- Below-average audio reproduction.
- No audio controls.
The Koss UR-20 are unstable headphones that will easily slip off your head. They are a bit bulky and feel a little cheap in their build quality. They also don't have any audio controls, which is disappointing. However, they're lightweight, the large ear cups are well-padded and comfortably fit most ears, and the headband doesn't apply too much pressure to the head.
The UR-20 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.
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.
These headphones 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.
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.
The Koss UR-20 have poor sound quality. Bass is weak, and instruments and vocals are overemphasized. The high frequencies are also inconsistent and too pronounced. This results in a boxy sound that lacks excitement and can be overly sharp with some tracks. They also have a noticeable amount of distortion, which is disappointing.
Poor performance. Despite the large ear cups, these headphones produce some of the least amount of bass we have measured. Also, due to poor design and build quality, the seal is not consistent resulting in inconsistent bass response between left and right ears.
Poor performance. It seems these headphones are trying to compensate for the lack of bass by hyping low-mid and mid. Combined with the lacking bass, this results in a boxy and honky sound.
Poor and inconsistent performance. The overall treble response is on the bright side, especially around 8KHz, making these headphones noticeably sibilant.
Subpar performance. The overall amount of distortion is high, especially in the bass and treble ranges. The harmonic distortion in the treble range at higher volumes is quite noticeable.
The UR-20 poorly isolate listeners. They only offer passive isolation and can block a bit of high-frequency noise. However, they fail to isolate in loud environments and easily let the ambient noise of a train or plane seep into your audio. They also leak a lot and might disturb the people around you at moderate-to-high volumes.
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.
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.
No active features.
No compatible app.
In the box
- Koss UR-20 Headphones
- 1/8" to 1/4" Adapter