Detailed comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC MS and KEF M500. 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 | KEF M500 |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC | Headset - wired | |
|---|---|---|---|
| Weight | 227 g | 208 g | KEF M500 are lighter than EPOS I SENNHEISER IMPACT MB 660 UC MS headphones. |
| Colour | - | Classic | |
| Body Material | - | Aluminium alloy | |
| Recommended Use | Portable electronics, computer | Portable electronics, phone | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC MS | KEF M500 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | - | Yes | |
| Foldable | Yes | Yes | Both headphones 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 KEF M500. |
| Max Input Power | - | 30 mW | |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 118 dB | 103 dB | EPOS I SENNHEISER IMPACT MB 660 UC MS have higher sensitivity than KEF M500. |
| Impedance | 46 Ohm | 32 Ohm | |
| Diaphragm | - | 40 mm | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC MS | KEF M500 |
|---|
| Type | - | On-cable | |
|---|---|---|---|
| Frequency Response | 150 - 6800 Hz | - |
| REMOTE CONTROL | EPOS I SENNHEISER IMPACT MB 660 UC MS | KEF M500 |
|---|
| Controls | - | Volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC MS | KEF M500 |
|---|
| Cable Type | Audio cable Micro-USB cable |
2 x headset cable - 1.3 m | |
|---|---|---|---|
| Plated Connector | - | Gold |
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC MS | KEF M500 |
|---|
| 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 | KEF M500 |
|---|
| Transmission Range | 25 m | - |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | KEF M500 |
|---|
| Connector Type | - | Headset (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC MS | KEF M500 |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | Protective case, in-flight plug adapter, 3.5 mm to 6.3 mm adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | Limited warranty - 1 year |
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