Side by side comparison and review of Koss UR 23i and Poly Blackwire C5220. 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 | Poly Blackwire C5220 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - 3.5 mm jack, USB-A | |
|---|---|---|---|
| Series | - | Blackwire 5200 series | |
| Weight | - | 164.2 g | |
| Colour | White | Black | Black | |
| Earpad Material | - | Artificial leather | |
| Recommended Use | Portable electronics | Portable electronics, computer |
| SOUND QUALITY | Koss UR 23i | Poly Blackwire C5220 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Adjustable Headband | - | Yes | |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Poly Blackwire C5220 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | - | |
| Sensitivity | 94 dB | 90 dB | Koss UR 23i have higher sensitivity than Poly Blackwire C5220. |
| Impedance | 34 Ohm | 32 Ohm | |
| Diaphragm | - | 28 mm | |
| Features | - | Digital signal processing, Dynamic EQ optimised | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Koss UR 23i | Poly Blackwire C5220 |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Poly Blackwire C5220 microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dB |
| REMOTE CONTROL | Koss UR 23i | Poly Blackwire C5220 |
|---|
| Controls | - | Mute, volume, answer/end |
|---|
| CABLE | Koss UR 23i | Poly Blackwire C5220 |
|---|
| Cable Type | Headphones cable - 1.22 m | USB-A cable - 21.7 cm |
|---|
| FEATURES | Koss UR 23i | Poly Blackwire C5220 |
|---|
| Features | - | 280° rotatable microphone |
|---|
| CONNECTIONS | Koss UR 23i | Poly Blackwire C5220 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | USB (USB Type-A) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Koss UR 23i | Poly Blackwire C5220 |
|---|
| Included Accessories | - | Carrying case | |
|---|---|---|---|
| Software Included | - | Poly Lens | |
| Compatibility | - | Mac, Windows | |
| Software Certification | - | Certified for Skype for Business, Certified for Microsoft Teams, Certified for Zoom Rooms, Avaya Certified, Cisco Jabber Certified | |
| Supported Host Device OS | - | macOS, Windows | |
| Service & Support | Limited warranty - lifetime | Limited warranty - 2 years |
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