In depth comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC and Bowers & Wilkins PX7. 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 | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC - USB, 3.5 mm jack | Headphones - Bluetooth - wireless, wired - 3.5 mm jack, USB-C | |
|---|---|---|---|
| Height | - | 22 cm | |
| Width | - | 17.5 cm | |
| Depth | - | 8 cm | |
| Weight | 227 g | 304 g | EPOS I SENNHEISER IMPACT MB 660 UC are lighter than EPOS I SENNHEISER IMPACT MB 660 UC headphones. |
| Colour | - | Carbon | Space grey | Silver | |
| Earpad Material | - | Soft leather, memory foam | |
| Headband Material | - | Carbon fibre | |
| Recommended Use | Portable electronics, computer | Portable electronics | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
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| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | - | Yes | |
| Foldable | Yes | Yes | Both headphones can be folded. |
| Connectivity Technology | Wireless | Wireless, wired | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 5.0 | Bowers & Wilkins PX7 have a more advanced version of Bluetooth than EPOS I SENNHEISER IMPACT MB 660 UC. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Device ID Profile (DIP) | 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, aptX | SBC, AAC, aptX, aptX HD | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | NoiseGard active noise compensation | Adaptive Noise Cancelling | |
| Noise Isolating | - | Yes | Bowers & Wilkins PX7 are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 17 - 23000 Hz | 10 - 30000 Hz | Bowers & Wilkins PX7 offer a larger frequency range than EPOS I SENNHEISER IMPACT MB 660 UC. |
| Total Harmonic Distortion (THD) | <0.5% | <0.3% | Bowers & Wilkins PX7 have lower total harmonic distortion than EPOS I SENNHEISER IMPACT MB 660 UC. |
| Sensitivity | 118 dB | 111 dB | EPOS I SENNHEISER IMPACT MB 660 UC have higher sensitivity than Bowers & Wilkins PX7. |
| Impedance | 46 Ohm | 20 Ohm | |
| Diaphragm | - | 43.6 mm |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Bowers & Wilkins PX7 microphone can cancel out ambient noise. |
| Noise Cancelling Technology | - | CVC2 (Clear Voice Communication v2) | |
| Frequency Response | 150 - 6800 Hz | - | |
| Microphones Included | 3 | 6 | Bowers & Wilkins PX7 have a built-in microphone. |
| REMOTE CONTROL | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
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| Controls | - | Volume control, on/off, answer/end, play/pause, next/previous track |
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| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
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| Cable Type | Audio cable Micro-USB cable |
Headphones cable - detachable - 1.2 m USB to USB-C cable - detachable - 1.2 m |
|
|---|---|---|---|
| Detachable Cable | - | Yes |
| FEATURES | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
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| Sensors | - | Proximity sensor |
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| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
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| Battery Type | Headset battery rechargeable - lithium polymer | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | 700 mAh | - | |
| Battery Life | 30 hours | 30 hour(s) | Both headphones last the same amount of time on a single charge. |
| Battery Life Details | - | Continuous playback (noise cancelling ON / Bluetooth): up to 30 hours Continuous playback (with 15 min charge): up to 5 hours |
|
| Standby Time | 360 hours | - | |
| Charging Time | 3 hours | - |
| WIRELESS LINK | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
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| Transmission Range | 25 m | - |
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| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
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| Connector Type | - | Headphones (mini-phone stereo 3.5 mm 4-pole) USB (USB Type-C) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC | Bowers & Wilkins PX7 |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | Carrying case | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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