In depth comparison and review of Bowers & Wilkins P9 Signature and EPOS I SENNHEISER ADAPT 135 USB II. 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 | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | - | ADAPT 100 Series | |
| Weight | 413 g | 145.3 g | EPOS I SENNHEISER ADAPT 135 USB II are lighter than Bowers & Wilkins P9 Signature headphones. |
| Colour | Brown | Black | |
| Earpad Material | Leather, memory foam | Leatherette | |
| Headband Material | Aluminium, memory foam | - | |
| Recommended Use | - | Portable electronics, computer |
| SOUND QUALITY | Bowers & Wilkins P9 Signature | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Foldable | Yes | - | Bowers & Wilkins P9 Signature can be folded. |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 2 - 30000 Hz | 20 - 20000 Hz | Bowers & Wilkins P9 Signature offer a larger frequency range than EPOS I SENNHEISER ADAPT 135 USB II. |
| Max Input Power | 50 mW | - | |
| Total Harmonic Distortion (THD) | 0.2% | - | |
| Sensitivity | 111 dB | - | |
| Impedance | 22 Ohm | - | |
| Max Sound Pressure | - | 115 dB | |
| Diaphragm | 40 mm | - | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Bowers & Wilkins P9 Signature | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | Mono | |
| Noise Cancelling | - | Yes | EPOS I SENNHEISER ADAPT 135 USB II microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 8000 Hz |
| REMOTE CONTROL | Bowers & Wilkins P9 Signature | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Controls | - | Volume, answer/end |
|---|
| CABLE | Bowers & Wilkins P9 Signature | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Cable Type | Headphones cable - detachable - 1.2 m Headphones cable - detachable - 5 m |
Headset cable | |
|---|---|---|---|
| Detachable Cable | Yes | - |
| FEATURES | Bowers & Wilkins P9 Signature | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| CONNECTIONS | Bowers & Wilkins P9 Signature | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | Headset (USB Type-A) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Bowers & Wilkins P9 Signature | EPOS I SENNHEISER ADAPT 135 USB II |
|---|
| Included Accessories | Carrying case, 3.5 mm to 6.3 mm adapter | - | |
|---|---|---|---|
| Software Certification | - | Optimised for UC | |
| Service & Support | Limited warranty - parts and labour - 2 years | Limited warranty - 2 years |
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