In depth comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC and Panasonic RP-HF400B. 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 | Panasonic RP-HF400B |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC - USB, 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 227 g | 130 g | Panasonic RP-HF400B are lighter than EPOS I SENNHEISER IMPACT MB 660 UC headphones. |
| Colour | - | Black | |
| Recommended Use | Portable electronics, computer | Portable electronics | |
| Bluetooth Range (Operating Distance) | 25 m | 10 m | EPOS I SENNHEISER IMPACT MB 660 UC have a greater operating distance than Panasonic RP-HF400B. |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC | Panasonic RP-HF400B |
|---|
| 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 have a more advanced version of Bluetooth than Panasonic RP-HF400B. |
| 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, aptX | - | |
| Active Noise Cancelling | Yes | - | EPOS I SENNHEISER IMPACT MB 660 UC are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | NoiseGard active noise compensation | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 17 - 23000 Hz | - | |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | 118 dB | - | |
| Impedance | 46 Ohm | 32 Ohm | |
| Diaphragm | - | 30 mm | |
| Magnet Material | - | Neodymium |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC | Panasonic RP-HF400B |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Frequency Response | 150 - 6800 Hz | - | |
| Microphones Included | 3 | - |
| REMOTE CONTROL | EPOS I SENNHEISER IMPACT MB 660 UC | Panasonic RP-HF400B |
|---|
| Controls | - | Volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC | Panasonic RP-HF400B |
|---|
| Cable Type | Audio cable Micro-USB cable |
USB charge cable - 0.1 m |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC | Panasonic RP-HF400B |
|---|
| Battery Type | Headset battery rechargeable - lithium polymer | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 700 mAh | - | |
| Battery Life | 30 hours | 20 hour(s) | EPOS I SENNHEISER IMPACT MB 660 UC lasts longer on a single charge than the Panasonic RP-HF400B. |
| 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 | Panasonic RP-HF400B |
|---|
| Transmission Range | 25 m | 10 m | EPOS I SENNHEISER IMPACT MB 660 UC have greater transmission range than Panasonic RP-HF400B. |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC | Panasonic RP-HF400B |
|---|
| Connector Type | - | Bluetooth |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC | Panasonic RP-HF400B |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | - | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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