In depth comparison and review of Sennheiser HD 25 Plus and EPOS I SENNHEISER IMPACT MB 660 UC. 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 |
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| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless - NFC - USB, 3.5 mm jack | |
|---|---|---|---|
| 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 |
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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 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) | |
| Bluetooth Audio Codec | - | SBC, aptX | |
| Active Noise Cancelling | - | Yes | EPOS I SENNHEISER IMPACT MB 660 UC are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | NoiseGard active noise compensation | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 16 - 22000 Hz | 17 - 23000 Hz | EPOS I SENNHEISER IMPACT MB 660 UC 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. |
| Impedance | 70 Ohm | 46 Ohm |
| MICROPHONE | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC |
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| Form Factor | - | Built-in | |
|---|---|---|---|
| Frequency Response | - | 150 - 6800 Hz | |
| Microphones Included | - | 3 |
| CABLE | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC |
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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 |
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| Battery Type | - | Headset battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 700 mAh | |
| 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 |
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| Transmission Range | - | 25 m |
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| CONNECTIONS | Sennheiser HD 25 Plus | EPOS I SENNHEISER IMPACT MB 660 UC |
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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 |
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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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