Side by side comparison and review of Koss UR 23i and Poly SupraPlus NC. 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 SupraPlus NC |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset | |
|---|---|---|---|
| Colour | White | Black | - | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Koss UR 23i | Poly SupraPlus NC |
|---|
| Headphones Form Factor | Full size | - | |
|---|---|---|---|
| Connectivity Technology | Wired | - | |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 20 - 20000 Hz | - | |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | - |
| MICROPHONE | Koss UR 23i | Poly SupraPlus NC |
|---|
| Type | On-cable | - |
|---|
| CABLE | Koss UR 23i | Poly SupraPlus NC |
|---|
| Cable Type | Headphones cable - 1.22 m | - |
|---|
| CONNECTIONS | Koss UR 23i | Poly SupraPlus NC |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | - |
|---|
| OTHERS | Koss UR 23i | Poly SupraPlus NC |
|---|
| Included Accessories | - | Monitor receiver | |
|---|---|---|---|
| TAA Compliant | - | Yes | |
| Service & Support | Limited warranty - lifetime | - |
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