In depth comparison and review of Bowers & Wilkins P9 Signature and Sennheiser HD 450BT. 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 450BT |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 413 g | 238 g | Sennheiser HD 450BT are lighter than Bowers & Wilkins P9 Signature headphones. |
| Colour | Brown | Black | White | |
| Earpad Material | Leather, memory foam | - | |
| Headband Material | Aluminium, memory foam | - |
| SOUND QUALITY | Bowers & Wilkins P9 Signature | Sennheiser HD 450BT |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Foldable | Yes | Yes | Both headphones can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.0 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC, AAC, aptX, apt-X LL | |
| Active Noise Cancelling | - | Yes | Sennheiser HD 450BT are equipped with active noice cancellation. |
| 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 450BT. |
| Max Input Power | 50 mW | - | |
| Total Harmonic Distortion (THD) | 0.2% | <0.3% | Bowers & Wilkins P9 Signature have lower total harmonic distortion than Bowers & Wilkins P9 Signature. |
| Sensitivity | 111 dB | - | |
| Impedance | 22 Ohm | - | |
| Max Sound Pressure | - | 108 dB | |
| Diaphragm | 40 mm | - |
| MICROPHONE | Bowers & Wilkins P9 Signature | Sennheiser HD 450BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | - | Beamforming | |
| Frequency Response | - | 80 - 6000 Hz | |
| Microphones Included | - | 2 |
| CABLE | Bowers & Wilkins P9 Signature | Sennheiser HD 450BT |
|---|
| Cable Type | Headphones cable - detachable - 1.2 m Headphones cable - detachable - 5 m |
Audio cable - detachable USB-C charge cable - detachable |
|
|---|---|---|---|
| Detachable Cable | Yes | - |
| BATTERY AND CHARGING | Bowers & Wilkins P9 Signature | Sennheiser HD 450BT |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 600 mAh | |
| Battery Life | - | 30 hours | |
| Charging Time | - | 2 hours |
| CONNECTIONS | Bowers & Wilkins P9 Signature | Sennheiser HD 450BT |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | - |
|---|
| OTHERS | Bowers & Wilkins P9 Signature | Sennheiser HD 450BT |
|---|
| Included Accessories | Carrying case, 3.5 mm to 6.3 mm adapter | Carrying case | |
|---|---|---|---|
| Service & Support | Limited warranty - parts and labour - 2 years | Limited warranty - 2 years |
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