Side by side comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC MS and Sennheiser HD 300 PRO. 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 | Sennheiser HD 300 PRO |
|---|
| Product Type | Headset - Bluetooth - wireless - NFC | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | 227 g | 297 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 | - | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT MB 660 UC MS | Sennheiser HD 300 PRO |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| 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 | 6 - 25000 Hz | Sennheiser HD 300 PRO offer a larger frequency range than EPOS I SENNHEISER IMPACT MB 660 UC MS. |
| Max Input Power | - | 500 mW | |
| Total Harmonic Distortion (THD) | 0.5% | <0.1% | Sennheiser HD 300 PRO have lower total harmonic distortion than EPOS I SENNHEISER IMPACT MB 660 UC MS. |
| Sensitivity | 118 dB | 108 dB | EPOS I SENNHEISER IMPACT MB 660 UC MS have higher sensitivity than Sennheiser HD 300 PRO. |
| Impedance | 46 Ohm | 64 Ohm | |
| Max Sound Pressure | - | 123 dB |
| MICROPHONE | EPOS I SENNHEISER IMPACT MB 660 UC MS | Sennheiser HD 300 PRO |
|---|
| Frequency Response | 150 - 6800 Hz | - |
|---|
| CABLE | EPOS I SENNHEISER IMPACT MB 660 UC MS | Sennheiser HD 300 PRO |
|---|
| Cable Type | Audio cable Micro-USB cable |
Headphones cable - 1.55 m | |
|---|---|---|---|
| Cable Length | - | 1.55 m |
| BATTERY AND CHARGING | EPOS I SENNHEISER IMPACT MB 660 UC MS | Sennheiser HD 300 PRO |
|---|
| 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 | Sennheiser HD 300 PRO |
|---|
| Transmission Range | 25 m | - |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT MB 660 UC MS | Sennheiser HD 300 PRO |
|---|
| Connector Type | - | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT MB 660 UC MS | Sennheiser HD 300 PRO |
|---|
| Included Accessories | Carrying case, Bluetooth adapter, airplane adapter | 6.3 mm (1/4") stereo adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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