Detailed comparison and review of Koss UR 23i and Sennheiser HD 4.20s. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | Koss UR 23i | Sennheiser HD 4.20s |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Colour | White | Black | Black | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Koss UR 23i | Sennheiser HD 4.20s |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Ear Cups Type | - | Closed | |
| Connectivity Technology | Wired | Wired | |
| Noise Isolating | - | Yes | Sennheiser HD 4.20s are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | - | |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | - |
| MICROPHONE | Koss UR 23i | Sennheiser HD 4.20s |
|---|
| Type | On-cable | On-cable | |
|---|---|---|---|
| Microphone Operation Mode | - | Omni-directional | |
| Sensitivity | - | -44 dBV/Pascal |
| REMOTE CONTROL | Koss UR 23i | Sennheiser HD 4.20s |
|---|
| Controls | - | 1-button remote |
|---|
| CABLE | Koss UR 23i | Sennheiser HD 4.20s |
|---|
| Cable Type | Headphones cable - 1.22 m | - | |
|---|---|---|---|
| Cable Length | - | 1.4 m | |
| Plated Connector | - | Gold |
| CONNECTIONS | Koss UR 23i | Sennheiser HD 4.20s |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (mini-phone 3.5 mm 4-pole) |
|---|
| OTHERS | Koss UR 23i | Sennheiser HD 4.20s |
|---|
| Service & Support | Limited warranty - lifetime | Limited warranty - parts and labour - 2 years |
|---|
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