Side by side comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC MS and Shure SRH940-EFS. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | Shure SRH940-EFS |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | 227 g | 322 g | EPOS I SENNHEISER IMPACT MB 660 UC MS are lighter than EPOS I SENNHEISER IMPACT MB 660 UC MS headphones. |
| Recommended Use | Portable electronics, computer | Professional audio, home audio | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC MS | Shure SRH940-EFS |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | 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 | 5 - 30000 Hz | Shure SRH940-EFS offer a larger frequency range than EPOS I SENNHEISER IMPACT MB 660 UC MS. |
| Max Input Power | - | 1000 mW | |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 118 dB | 100 dB/mW | EPOS I SENNHEISER IMPACT MB 660 UC MS have higher sensitivity than Shure SRH940-EFS. |
| Impedance | 46 Ohm | 42 Ohm | |
| Diaphragm | - | 40 mm | |
| Magnet Material | - | Neodymium magnet |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC MS | Shure SRH940-EFS |
|---|
| Frequency Response | 150 - 6800 Hz | - |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC MS | Shure SRH940-EFS |
|---|
| Cable Type | Audio cable Micro-USB cable |
Headphones cable - detachable - coiled - 3 m Headphones cable - detachable |
|
|---|---|---|---|
| Cable Length | - | 3 m | |
| Detachable Cable | - | Yes | |
| Plated Connector | - | Gold |
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC MS | Shure SRH940-EFS |
|---|
| 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 | Shure SRH940-EFS |
|---|
| Transmission Range | 25 m | - |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | Shure SRH940-EFS |
|---|
| Connector Type | - | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC MS | Shure SRH940-EFS |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | Carrying case, 6.3 mm (1/4") stereo adapter, velour ear pads | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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