Side by side comparison and review of Koss UR 23i and Bose QuietComfort 35 II. 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 35 II |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless - NFC | |
|---|---|---|---|
| Height | - | 18 cm | |
| Width | - | 17 cm | |
| Depth | - | 8.13 cm | |
| Weight | - | 309 g | |
| Colour | White | Black | Triple midnight | Rose gold | Black | Silver | |
| Body Material | - | Plastic, metal, leather, alcantara | |
| Earpad Material | - | Leather | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 9 m |
| SOUND QUALITY | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Foldable | - | Yes | Bose QuietComfort 35 II can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Active Noise Cancelling | - | Yes | Bose QuietComfort 35 II are equipped with active noice cancellation. |
| Noise Isolating | - | Yes | Bose QuietComfort 35 II are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | - | |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | - |
| MICROPHONE | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Controls | - | Volume, power on/off, play/pause, next/previous track, skip track, voice assistant |
|---|
| CABLE | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Cable Type | Headphones cable - 1.22 m | Headphones cable - detachable - 1.2 m USB charge cable - detachable - 30 cm |
|
|---|---|---|---|
| Cable Length | - | 1.2 m | |
| Detachable Cable | - | Yes | |
| Plated Connector | - | Gold |
| FEATURES | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Internet of Things (IoT) Compatible | - | Yes | |
|---|---|---|---|
| Intelligent Assistant | - | Google Assistant |
| BATTERY AND CHARGING | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Battery Type | - | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Life | - | 20 hour(s) | |
| Charging Time | - | 2.25 hour(s) |
| CONNECTIONS | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (mini-phone 3.5 mm 4-pole) |
|---|
| OTHERS | Koss UR 23i | Bose QuietComfort 35 II |
|---|
| Included Accessories | - | Carrying case | |
|---|---|---|---|
| Compatibility | - | iPhone, iPad, iPod, Android phone | |
| Service & Support | Limited warranty - lifetime | Limited warranty - parts and labour - 1 year |
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