Side by side comparison and review of Koss UR 23i and Poly Blackwire 3320-M. 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 3320-M |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB-C | |
|---|---|---|---|
| Series | - | Blackwire 3300 series | |
| Height | - | 17.8 cm | |
| Width | - | 15.5 cm | |
| Depth | - | 3.2 cm | |
| Weight | - | 130 g | |
| Colour | White | Black | Black | |
| Earpad Material | - | Foam | |
| Recommended Use | Portable electronics | Portable electronics, computer |
| SOUND QUALITY | Koss UR 23i | Poly Blackwire 3320-M |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Adjustable Headband | - | Yes | |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Poly Blackwire 3320-M are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 94 dB | 116 dB | Poly Blackwire 3320-M have higher sensitivity than Koss UR 23i. |
| Impedance | 34 Ohm | 32 Ohm | |
| Max Sound Pressure | - | 118 dB | |
| Diaphragm | - | 32 mm | |
| Features | - | Dynamic EQ optimised | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Koss UR 23i | Poly Blackwire 3320-M |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dB |
| REMOTE CONTROL | Koss UR 23i | Poly Blackwire 3320-M |
|---|
| Controls | - | Mute, volume, answer/end |
|---|
| CABLE | Koss UR 23i | Poly Blackwire 3320-M |
|---|
| Cable Type | Headphones cable - 1.22 m | - |
|---|
| CONNECTIONS | Koss UR 23i | Poly Blackwire 3320-M |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | USB (24 pin USB-C) |
|---|
| OTHERS | Koss UR 23i | Poly Blackwire 3320-M |
|---|
| Compatibility | - | Mac, Windows | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams | |
| Supported Host Device OS | - | Windows 10, macOS | |
| Service & Support | Limited warranty - lifetime | - |
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