Detailed comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC MS and JVC HA S31BT. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 227 g | 158 g | JVC HA S31BT are lighter than EPOS I SENNHEISER IMPACT MB 660 UC MS headphones. |
| Recommended Use | Portable electronics, computer | Portable electronics | |
| Bluetooth Range (Operating Distance) | 25 m | 10 m | EPOS I SENNHEISER IMPACT MB 660 UC MS have a greater operating distance than JVC HA S31BT. |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | Yes | Both headphones can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 4.1 | EPOS I SENNHEISER IMPACT MB 660 UC MS have a more advanced version of Bluetooth than JVC HA S31BT. |
| 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), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC | |
| 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 | - | |
| Sound Effects | - | Dynamic Bass Boost (DBB) | |
| Frequency Response | 17 - 23000 Hz | 20 - 20000 Hz | EPOS I SENNHEISER IMPACT MB 660 UC MS offer a larger frequency range than JVC HA S31BT. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 118 dB | - | |
| Impedance | 46 Ohm | 32 Ohm | |
| Diaphragm | - | 30.7 mm | |
| Magnet Material | - | Ferrite |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Frequency Response | 150 - 6800 Hz | - |
| REMOTE CONTROL | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Controls | - | 4-button remote |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Cable Type | Audio cable Micro-USB cable |
USB charge cable - detachable |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Battery Type | Headset battery rechargeable | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | 30 hours | 17 hour(s) | EPOS I SENNHEISER IMPACT MB 660 UC MS lasts longer on a single charge than the JVC HA S31BT. |
| Standby Time | 360 hours | - | |
| Charging Time | 3 hours | 3 hour(s) | The charging of both headphones last the same time. |
| WIRELESS LINK | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Transmission Range | 25 m | - |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Connector Type | - | USB (power only) (micro-USB) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC MS | JVC HA S31BT |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | - | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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