In depth comparison and review of Sennheiser HD 25 Plus and EPOS I SENNHEISER IMPACT MB 660 UC MS. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless - NFC | |
|---|---|---|---|
| Weight | 140 g | 227 g | Sennheiser HD 25 Plus are lighter than Sennheiser HD 25 Plus headphones. |
| Design | DJ | - | |
| Recommended Use | Professional audio, home audio | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 25 m |
| SOUND QUALITY | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Headphones Form Factor | On-ear | 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 | 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 | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 16 - 22000 Hz | 17 - 23000 Hz | EPOS I SENNHEISER IMPACT MB 660 UC MS offer a larger frequency range than Sennheiser HD 25 Plus. |
| Total Harmonic Distortion (THD) | 0.3% | 0.5% | Sennheiser HD 25 Plus have lower total harmonic distortion than Sennheiser HD 25 Plus. |
| Sensitivity | 120 dB | 118 dB | Sennheiser HD 25 Plus have higher sensitivity than EPOS I SENNHEISER IMPACT MB 660 UC MS. |
| Impedance | 70 Ohm | 46 Ohm |
| MICROPHONE | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Frequency Response | - | 150 - 6800 Hz |
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| CABLE | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Cable Type | Headphones cable - 1.3 m Headphones cable - 1.5 m |
Audio cable Micro-USB cable |
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| BATTERY AND CHARGING | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Battery Type | - | Headset battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 30 hours | |
| Standby Time | - | 360 hours | |
| Charging Time | - | 3 hours |
| WIRELESS LINK | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Transmission Range | - | 25 m |
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| CONNECTIONS | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Connector Type | Headphones (mini-phone stereo 3.5 mm) | - |
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| OTHERS | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC MS |
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| Included Accessories | Protective pouch, 3.5 mm to 6.3 mm adapter, 2 pairs of earpads | Carrying case, Bluetooth adapter, airplane adapter | |
|---|---|---|---|
| Service & Support | - | Limited warranty - 2 years |
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