Detailed comparison and review of Sennheiser HD 4.20s and EPOS I SENNHEISER IMPACT MB 660 UC MS. 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 | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless - NFC | |
|---|---|---|---|
| Weight | - | 227 g | |
| Colour | Black | - | |
| Recommended Use | - | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 25 m |
| SOUND QUALITY | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Foldable | - | Yes | EPOS I SENNHEISER IMPACT MB 660 UC MS can be folded. |
| Connectivity Technology | Wired | Wireless | |
| 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 | |
| Noise Isolating | Yes | - | Sennheiser HD 4.20s are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | - | 17 - 23000 Hz | |
| Total Harmonic Distortion (THD) | - | 0.5% | |
| Sensitivity | - | 118 dB | |
| Impedance | - | 46 Ohm |
| MICROPHONE | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Type | On-cable | - | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | - | 150 - 6800 Hz | |
| Sensitivity | -44 dBV/Pascal | - |
| REMOTE CONTROL | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Controls | 1-button remote | - |
|---|
| CABLE | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Cable Type | - | Audio cable Micro-USB cable |
|
|---|---|---|---|
| Cable Length | 1.4 m | - | |
| Plated Connector | Gold | - |
| BATTERY AND CHARGING | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Battery Type | - | Headset battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 30 hours | |
| Standby Time | - | 360 hours | |
| Charging Time | - | 3 hours |
| WIRELESS LINK | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Transmission Range | - | 25 m |
|---|
| CONNECTIONS | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | - |
|---|
| OTHERS | Sennheiser HD 4.20s | EPOS I SENNHEISER IMPACT MB 660 UC MS |
|---|
| Included Accessories | - | Carrying case, Bluetooth adapter, airplane adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - parts and labour - 2 years | Limited warranty - 2 years |
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