Detailed comparison and review of Koss UR 23i and beyerdynamic DT 990 PRO. 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 | beyerdynamic DT 990 PRO |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | - | 250 g | |
| Colour | White | Black | Black | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Koss UR 23i | beyerdynamic DT 990 PRO |
|---|
| 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 | 5 - 35000 Hz | beyerdynamic DT 990 PRO offer a larger frequency range than Koss UR 23i. |
| Max Input Power | - | 100 mW | |
| Total Harmonic Distortion (THD) | - | 0.2% | |
| Sensitivity | 94 dB | 96 dB | beyerdynamic DT 990 PRO have higher sensitivity than Koss UR 23i. |
| Impedance | 34 Ohm | 250 Ohm |
| MICROPHONE | Koss UR 23i | beyerdynamic DT 990 PRO |
|---|
| Type | On-cable | - |
|---|
| CABLE | Koss UR 23i | beyerdynamic DT 990 PRO |
|---|
| Cable Type | Headphones cable - 1.22 m | Headphones cable - 3 m | |
|---|---|---|---|
| Cable Length | - | 3 m | |
| Plated Connector | - | Gold |
| CONNECTIONS | Koss UR 23i | beyerdynamic DT 990 PRO |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (mini-phone 3.5mm) |
|---|
| OTHERS | Koss UR 23i | beyerdynamic DT 990 PRO |
|---|
| Included Accessories | - | 6.3 mm (1/4") stereo adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - lifetime | - |
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