In depth comparison and review of Koss UR 23i and Bowers & Wilkins P9 Signature. 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 P9 Signature |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | - | 413 g | |
| Colour | White | Black | Brown | |
| Earpad Material | - | Leather, memory foam | |
| Headband Material | - | Aluminium, memory foam | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Koss UR 23i | Bowers & Wilkins P9 Signature |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Foldable | - | Yes | Bowers & Wilkins P9 Signature can be folded. |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 2 - 30000 Hz | Bowers & Wilkins P9 Signature offer a larger frequency range than Koss UR 23i. |
| Max Input Power | - | 50 mW | |
| Total Harmonic Distortion (THD) | - | 0.2% | |
| Sensitivity | 94 dB | 111 dB | Bowers & Wilkins P9 Signature have higher sensitivity than Koss UR 23i. |
| Impedance | 34 Ohm | 22 Ohm | |
| Diaphragm | - | 40 mm |
| MICROPHONE | Koss UR 23i | Bowers & Wilkins P9 Signature |
|---|
| Type | On-cable | On-cable |
|---|
| CABLE | Koss UR 23i | Bowers & Wilkins P9 Signature |
|---|
| Cable Type | Headphones cable - 1.22 m | Headphones cable - detachable - 1.2 m Headphones cable - detachable - 5 m |
|
|---|---|---|---|
| Detachable Cable | - | Yes |
| CONNECTIONS | Koss UR 23i | Bowers & Wilkins P9 Signature |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headphones (mini-phone 3.5 mm 4-pole) |
|---|
| OTHERS | Koss UR 23i | Bowers & Wilkins P9 Signature |
|---|
| Included Accessories | - | Carrying case, 3.5 mm to 6.3 mm adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - lifetime | Limited warranty - parts and labour - 2 years |
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