In depth comparison and review of Koss UR 23i and Bowers & Wilkins PX. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless - USB, 3.5 mm jack | |
|---|---|---|---|
| Weight | - | 335 g | |
| Colour | White | Black | Space grey | Soft gold | |
| Earpad Material | - | Soft leather, memory foam | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Adjustable Headband | - | Yes | |
| Foldable | - | Yes | Bowers & Wilkins PX can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Generic Access Profile (GAP), Service Discovery Application Profile (SDAP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Device ID Profile (DIP) | |
| Bluetooth Audio Codec | - | SBC, AAC, aptX HD | |
| Active Noise Cancelling | - | Yes | Bowers & Wilkins PX are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Adaptive Noise Cancelling | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 10 - 20000 Hz | Bowers & Wilkins PX offer a larger frequency range than Koss UR 23i. |
| Total Harmonic Distortion (THD) | - | <0.3% | |
| Sensitivity | 94 dB | 111 dB | Bowers & Wilkins PX have higher sensitivity than Koss UR 23i. |
| Impedance | 34 Ohm | 22 Ohm | |
| Diaphragm | - | 40 mm | |
| Features | - | Bluetooth aptX technology |
| MICROPHONE | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphones Included | - | 6 |
| REMOTE CONTROL | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Controls | - | Volume control, on/off, answer/end, play/pause, next/previous track |
|---|
| CABLE | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Cable Type | Headphones cable - 1.22 m | Headphones cable - detachable - 1.2 m | |
|---|---|---|---|
| Detachable Cable | - | Yes |
| BATTERY AND CHARGING | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 850 mAh | |
| Battery Life | - | 50 hour(s) | |
| Battery Life Details | - | Continuous playback (noise cancelling OFF / cable connection): up to 50 hours Continuous playback (noise cancelling ON / cable connection): up to 33 hours Continuous playback (noise cancelling OFF): up to 29 hours Continuous playback (noise cancelling ON / Bluetooth): up to 22 hours |
| CONNECTIONS | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (mini-phone stereo 3.5 mm 4-pole) USB (USB Type-C) |
|---|
| OTHERS | Koss UR 23i | Bowers & Wilkins PX |
|---|
| Included Accessories | - | Protective pouch, USB charging cable (120cm) | |
|---|---|---|---|
| Service & Support | Limited warranty - lifetime | - |
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