Side by side comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC MS and No Fear Premier. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | No Fear Premier |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC | Headset - wired | |
|---|---|---|---|
| Weight | 227 g | - | |
| Colour | - | Black / red | |
| Recommended Use | Portable electronics, computer | Portable electronics | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC MS | No Fear Premier |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | EPOS I SENNHEISER IMPACT MB 660 UC MS can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.2 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Device ID Profile (DIP) | - | |
| Active Noise Cancelling | Yes | - | EPOS I SENNHEISER IMPACT MB 660 UC MS are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | Adaptive Noise Control | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 17 - 23000 Hz | 20 - 20000 Hz | EPOS I SENNHEISER IMPACT MB 660 UC MS offer a larger frequency range than No Fear Premier. |
| Max Input Power | - | 100 mW | |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 118 dB | 105 dB | EPOS I SENNHEISER IMPACT MB 660 UC MS have higher sensitivity than No Fear Premier. |
| Impedance | 46 Ohm | 32 Ohm | |
| Diaphragm | - | 40 mm |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC MS | No Fear Premier |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | Omni-directional | |
| Frequency Response | 150 - 6800 Hz | 50 - 10000 Hz | No Fear Premier offer a larger microphone frequency range than EPOS I SENNHEISER IMPACT MB 660 UC MS. |
| Sensitivity | - | -38 dB | |
| Microphones Included | - | 6 |
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC MS | No Fear Premier |
|---|
| Cable Type | Audio cable Micro-USB cable |
- | |
|---|---|---|---|
| Cable Length | - | 1.2 m |
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC MS | No Fear Premier |
|---|
| Battery Type | Headset battery rechargeable | - | |
|---|---|---|---|
| Battery Life | 30 hours | - | |
| Standby Time | 360 hours | - | |
| Charging Time | 3 hours | - |
| WIRELESS LINK | EPOS I SENNHEISER IMPACT MB 660 UC MS | No Fear Premier |
|---|
| Transmission Range | 25 m | - |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC MS | No Fear Premier |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | - | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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