In depth comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC and JVC TINYPHONES HA-KD9BT. 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 | JVC TINYPHONES HA-KD9BT |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC - USB, 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 227 g | 120 g | JVC TINYPHONES HA-KD9BT are lighter than EPOS I SENNHEISER IMPACT MB 660 UC headphones. |
| Design | - | Kids | |
| Recommended Use | Portable electronics, computer | - | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | EPOS I SENNHEISER IMPACT MB 660 UC can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 4.2 | Both headphones have the same Bluetooth version. |
| 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 | SBC | |
| 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 | - | |
| Frequency Response | 17 - 23000 Hz | 20 - 20000 Hz | EPOS I SENNHEISER IMPACT MB 660 UC offer a larger frequency range than JVC TINYPHONES HA-KD9BT. |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | 118 dB | 85 dB | EPOS I SENNHEISER IMPACT MB 660 UC have higher sensitivity than JVC TINYPHONES HA-KD9BT. |
| Impedance | 46 Ohm | 20 Ohm | |
| Magnet Material | - | Ferrite |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Frequency Response | 150 - 6800 Hz | - | |
| Microphones Included | 3 | - |
| REMOTE CONTROL | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Controls | - | Volume, power on/off |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Cable Type | Audio cable Micro-USB cable |
USB charge cable - detachable |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Battery Type | Headset battery rechargeable - lithium polymer | 1 x headphone battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 700 mAh | - | |
| Battery Life | 30 hours | 12 hour(s) | EPOS I SENNHEISER IMPACT MB 660 UC lasts longer on a single charge than the JVC TINYPHONES HA-KD9BT. |
| Standby Time | 360 hours | - | |
| Charging Time | 3 hours | 3 hour(s) | The charging of both headphones last the same time. |
| Included Qty | - | 1 |
| WIRELESS LINK | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Transmission Range | 25 m | - |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Connector Type | - | Bluetooth USB (power only) (micro-USB) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC | JVC TINYPHONES HA-KD9BT |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | Stickers | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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