Detailed comparison and review of Koss UR 23i and Sennheiser HD 559. 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 559 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - wired | |
|---|---|---|---|
| Series | - | HD 5 | |
| Colour | White | Black | Black | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Koss UR 23i | Sennheiser HD 559 |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Open | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 14 - 26000 Hz | Sennheiser HD 559 offer a larger frequency range than Koss UR 23i. |
| Total Harmonic Distortion (THD) | - | 0.2% | |
| Sensitivity | 94 dB | 108 dB/Vrms | Sennheiser HD 559 have higher sensitivity than Koss UR 23i. |
| Impedance | 34 Ohm | 50 Ohm |
| MICROPHONE | Koss UR 23i | Sennheiser HD 559 |
|---|
| Type | On-cable | - |
|---|
| CABLE | Koss UR 23i | Sennheiser HD 559 |
|---|
| Cable Type | Headphones cable - 1.22 m | Headphones cable - 3 m | |
|---|---|---|---|
| Cable Length | - | 3 m | |
| Detachable Cable | - | Yes |
| CONNECTIONS | Koss UR 23i | Sennheiser HD 559 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (phone stereo 6.3 mm) |
|---|
| OTHERS | Koss UR 23i | Sennheiser HD 559 |
|---|
| Service & Support | Limited warranty - lifetime | - |
|---|
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