Detailed comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC MS and V7 HU521-2EP. 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 | V7 HU521-2EP |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC | Headset - wired - USB | |
|---|---|---|---|
| Height | - | 18.8 cm | |
| Width | - | 6.8 cm | |
| Depth | - | 16.5 cm | |
| Weight | 227 g | 172.5 g | V7 HU521-2EP are lighter than EPOS I SENNHEISER IMPACT MB 660 UC MS headphones. |
| Colour | - | Black | |
| Recommended Use | Portable electronics, computer | Computer | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC MS | V7 HU521-2EP |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | - | Yes | |
| 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 V7 HU521-2EP. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 118 dB | 110 dB | EPOS I SENNHEISER IMPACT MB 660 UC MS have higher sensitivity than V7 HU521-2EP. |
| Impedance | 46 Ohm | 32 Ohm | |
| Diaphragm | - | 40 mm | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC MS | V7 HU521-2EP |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Frequency Response | 150 - 6800 Hz | - | |
| Audio Input Details | - | Omni-directional - 300° | |
| Sensitivity | - | -44 dB |
| REMOTE CONTROL | EPOS I SENNHEISER IMPACT MB 660 UC MS | V7 HU521-2EP |
|---|
| Controls | - | Mute, volume |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC MS | V7 HU521-2EP |
|---|
| Cable Type | Audio cable Micro-USB cable |
Headset cable - 1.8 m | |
|---|---|---|---|
| Cable Length | - | 1.8 m |
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC MS | V7 HU521-2EP |
|---|
| 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 | V7 HU521-2EP |
|---|
| Transmission Range | 25 m | - |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | V7 HU521-2EP |
|---|
| Connector Type | - | USB (4 PIN USB Type A) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC MS | V7 HU521-2EP |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | - | |
|---|---|---|---|
| Compliant Standards | - | FCC, RoHS | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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