Side by side comparison and review of Koss UR 23i and Bose QuietComfort 45. 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 | Bose QuietComfort 45 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 18.4 cm | |
| Width | - | 15.2 cm | |
| Depth | - | 7.62 cm | |
| Weight | - | 241 g | |
| Dimensions & Weight Details | - | Case: 14.5 cm x 5.08 cm x 21.1 cm / 188 g | |
| Colour | White | Black | Black | Smoke white | Triple black | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 9 m |
| SOUND QUALITY | Koss UR 23i | Bose QuietComfort 45 |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.1 | |
| Active Noise Cancelling | - | Yes | Bose QuietComfort 45 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Acoustic Noise Cancelling | |
| Noise Isolating | - | Yes | Bose QuietComfort 45 are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 20 - 20000 Hz | - | |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | - |
| MICROPHONE | Koss UR 23i | Bose QuietComfort 45 |
|---|
| Type | On-cable | - |
|---|
| CABLE | Koss UR 23i | Bose QuietComfort 45 |
|---|
| Cable Type | Headphones cable - 1.22 m | USB-C to USB-A cable - detachable - 30 cm |
|---|
| BATTERY AND CHARGING | Koss UR 23i | Bose QuietComfort 45 |
|---|
| Battery Type | - | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 460 mAh | |
| Battery Life | - | 24 hour(s) | |
| Charging Time | - | 2.5 hour(s) |
| CONNECTIONS | Koss UR 23i | Bose QuietComfort 45 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | - |
|---|
| OTHERS | Koss UR 23i | Bose QuietComfort 45 |
|---|
| Included Accessories | - | Carrying case | |
|---|---|---|---|
| Service & Support | Limited warranty - lifetime | - |
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