Side by side comparison and review of Koss UR 23i and Sennheiser HD 820. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Koss UR 23i | Sennheiser HD 820 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - wired | |
|---|---|---|---|
| Weight | - | 360 g | |
| Colour | White | Black | - | |
| Earpad Material | - | Microfibre | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Koss UR 23i | Sennheiser HD 820 |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Connectivity Technology | Wired | Wired | |
| Noise Isolating | - | Yes | Sennheiser HD 820 are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 6 - 48000 Hz | Sennheiser HD 820 offer a larger frequency range than Koss UR 23i. |
| Sensitivity | 94 dB | 103 dB/Vrms | Sennheiser HD 820 have higher sensitivity than Koss UR 23i. |
| Impedance | 34 Ohm | 300 Ohm |
| MICROPHONE | Koss UR 23i | Sennheiser HD 820 |
|---|
| Type | On-cable | - |
|---|
| CABLE | Koss UR 23i | Sennheiser HD 820 |
|---|
| Cable Type | Headphones cable - 1.22 m | Headphones cable - OFC - 3 m | |
|---|---|---|---|
| Cable Length | - | 3 m | |
| Plated Connector | - | Gold |
| CONNECTIONS | Koss UR 23i | Sennheiser HD 820 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (phone stereo 6.3 mm) |
|---|
| OTHERS | Koss UR 23i | Sennheiser HD 820 |
|---|
| Included Accessories | - | USB flash drive, microfibre cleaning cloth, 4.4 mm Pentaconn stereo jack plug, XLR-4 connector | |
|---|---|---|---|
| Service & Support | Limited warranty - lifetime | - |
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