In depth comparison and review of Bowers & Wilkins P9 Signature and Sennheiser HD 4.40. 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 | Bowers & Wilkins P9 Signature | Sennheiser HD 4.40 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless - NFC | |
|---|---|---|---|
| Weight | 413 g | - | |
| Colour | Brown | - | |
| Earpad Material | Leather, memory foam | - | |
| Headband Material | Aluminium, memory foam | - |
| SOUND QUALITY | Bowers & Wilkins P9 Signature | Sennheiser HD 4.40 |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Ear Cups Type | - | Closed | |
| Foldable | Yes | - | Bowers & Wilkins P9 Signature can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.0 | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 2 - 30000 Hz | 18 - 22000 Hz | Bowers & Wilkins P9 Signature offer a larger frequency range than Sennheiser HD 4.40. |
| Max Input Power | 50 mW | - | |
| Total Harmonic Distortion (THD) | 0.2% | 0.5% | Bowers & Wilkins P9 Signature have lower total harmonic distortion than Bowers & Wilkins P9 Signature. |
| Sensitivity | 111 dB | 113 dB | Sennheiser HD 4.40 have higher sensitivity than Bowers & Wilkins P9 Signature. |
| Impedance | 22 Ohm | 18 Ohm | |
| Diaphragm | 40 mm | - |
| MICROPHONE | Bowers & Wilkins P9 Signature | Sennheiser HD 4.40 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | - | Omni-directional | |
| Frequency Response | - | 100 - 10000 Hz | |
| Microphones Included | - | 2 |
| CABLE | Bowers & Wilkins P9 Signature | Sennheiser HD 4.40 |
|---|
| Cable Type | Headphones cable - detachable - 1.2 m Headphones cable - detachable - 5 m |
- | |
|---|---|---|---|
| Detachable Cable | Yes | - |
| BATTERY AND CHARGING | Bowers & Wilkins P9 Signature | Sennheiser HD 4.40 |
|---|
| Battery Type | - | Headphone battery lithium polymer |
|---|
| CONNECTIONS | Bowers & Wilkins P9 Signature | Sennheiser HD 4.40 |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | - |
|---|
| OTHERS | Bowers & Wilkins P9 Signature | Sennheiser HD 4.40 |
|---|
| Included Accessories | Carrying case, 3.5 mm to 6.3 mm adapter | - | |
|---|---|---|---|
| Service & Support | Limited warranty - parts and labour - 2 years | - |
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