In depth comparison and review of Koss UR 23i and EPOS I SENNHEISER C20. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Koss UR 23i | EPOS I SENNHEISER C20 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | |
|---|---|---|---|
| Series | - | C-series | |
| Height | - | 20 cm | |
| Width | - | 16.5 cm | |
| Depth | - | 5.8 cm | |
| Weight | - | 200 g | |
| Colour | White | Black | Black | |
| Recommended Use | Portable electronics | - | |
| Bluetooth Range (Operating Distance) | - | 25 m |
| SOUND QUALITY | Koss UR 23i | EPOS I SENNHEISER C20 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | - | |
| Total Harmonic Distortion (THD) | - | 3% | |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | - | |
| Features | - | EPOS BrainAdapt Technology |
| MICROPHONE | Koss UR 23i | EPOS I SENNHEISER C20 |
|---|
| Type | On-cable | Boom |
|---|
| CABLE | Koss UR 23i | EPOS I SENNHEISER C20 |
|---|
| Cable Type | Headphones cable - 1.22 m | - |
|---|
| BATTERY AND CHARGING | Koss UR 23i | EPOS I SENNHEISER C20 |
|---|
| Battery Type | - | Headset battery rechargeable | |
|---|---|---|---|
| Standby Time | - | 300 hours | |
| Charging Time | - | 2 hour(s) |
| CONNECTIONS | Koss UR 23i | EPOS I SENNHEISER C20 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | - |
|---|
| OTHERS | Koss UR 23i | EPOS I SENNHEISER C20 |
|---|
| Included Accessories | - | Carrying case, charging cable, BTD 800 USB dongle | |
|---|---|---|---|
| Service & Support | Limited warranty - lifetime | Limited warranty - 2 years |
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