In depth comparison and review of Bowers & Wilkins PX and Sennheiser HD 660 S. 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 PX | Sennheiser HD 660 S |
|---|
| Product Type | Headphones - Bluetooth - wireless - USB, 3.5 mm jack | Headphones - wired - 6.35 mm jack | |
|---|---|---|---|
| Weight | 335 g | 260 g | Sennheiser HD 660 S are lighter than Bowers & Wilkins PX headphones. |
| Colour | Space grey | Soft gold | Matte black | Anthracite, matte black | |
| Earpad Material | Soft leather, memory foam | - | |
| Recommended Use | Portable electronics | Professional audio, portable electronics |
| SOUND QUALITY | Bowers & Wilkins PX | Sennheiser HD 660 S |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Open | |
| Adjustable Headband | Yes | - | |
| Foldable | Yes | - | Bowers & Wilkins PX can be folded. |
| Connectivity Technology | Wireless | Wired | |
| 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 | 10 - 20000 Hz | 9 - 41500 Hz | Sennheiser HD 660 S offer a larger frequency range than Bowers & Wilkins PX. |
| Total Harmonic Distortion (THD) | <0.3% | 0.04% | Sennheiser HD 660 S have lower total harmonic distortion than Bowers & Wilkins PX. |
| Sensitivity | 111 dB | 104 dB/Vrms | Bowers & Wilkins PX have higher sensitivity than Sennheiser HD 660 S. |
| Impedance | 22 Ohm | 150 Ohm | |
| Diaphragm | 40 mm | - | |
| Features | Bluetooth aptX technology | - |
| MICROPHONE | Bowers & Wilkins PX | Sennheiser HD 660 S |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Microphones Included | 6 | - |
| REMOTE CONTROL | Bowers & Wilkins PX | Sennheiser HD 660 S |
|---|
| Controls | Volume control, on/off, answer/end, play/pause, next/previous track | - |
|---|
| CABLE | Bowers & Wilkins PX | Sennheiser HD 660 S |
|---|
| Cable Type | Headphones cable - detachable - 1.2 m | Headphones cable - OFC - straight | |
|---|---|---|---|
| Detachable Cable | Yes | - |
| BATTERY AND CHARGING | Bowers & Wilkins PX | Sennheiser HD 660 S |
|---|
| 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 | Bowers & Wilkins PX | Sennheiser HD 660 S |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) USB (USB Type-C) |
Headphones (phone stereo 6.3 mm) |
|---|
| OTHERS | Bowers & Wilkins PX | Sennheiser HD 660 S |
|---|
| Included Accessories | Protective pouch, USB charging cable (120cm) | 3.5 mm to 6.3 mm adapter, 4.4 mm Pentaconn stereo jack plug | |
|---|---|---|---|
| Service & Support | - | Limited warranty - parts and labour - 2 years |
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