Detailed comparison and review of EPOS I SENNHEISER IMPACT SC 660 TC and MSI H991. 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 SC 660 TC | MSI H991 |
|---|
| Product Type | Headset - wired - Easy Disconnect | Headset - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | 113 g | 300 g | EPOS I SENNHEISER IMPACT SC 660 TC are lighter than EPOS I SENNHEISER IMPACT SC 660 TC headphones. |
| Colour | Black with silver | - | |
| Earpad Material | Leatherette | - | |
| Recommended Use | - | Computer |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT SC 660 TC | MSI H991 |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Adjustable Headband | - | Yes | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 50 - 18000 Hz | 20 - 20000 Hz | MSI H991 offer a larger frequency range than EPOS I SENNHEISER IMPACT SC 660 TC. |
| Sensitivity | 103 dB | 101 dB +/- 3dB | EPOS I SENNHEISER IMPACT SC 660 TC have higher sensitivity than MSI H991. |
| Impedance | 200 Ohm | 32 Ohm | |
| Diaphragm | - | 40 mm | |
| Magnet Material | Neodymium | - |
| MICROPHONE | EPOS I SENNHEISER IMPACT SC 660 TC | MSI H991 |
|---|
| Form Factor | Headset microphone | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Microphone Operation Mode | - | Omni-directional | |
| Frequency Response | 150 - 6800 Hz | - | |
| Sensitivity | - | -47 dB | |
| Sensitivity Margin | - | +/- 3dB | |
| Impedance | - | 2.2 kOhm |
| CABLE | EPOS I SENNHEISER IMPACT SC 660 TC | MSI H991 |
|---|
| Cable Type | Headset cable - 1 m | - | |
|---|---|---|---|
| Cable Length | - | 1.5 m |
| CONNECTIONS | EPOS I SENNHEISER IMPACT SC 660 TC | MSI H991 |
|---|
| Connector Type | Headset (EasyDisconnect) | Headset (mini-phone 3.5mm) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT SC 660 TC | MSI H991 |
|---|
| Included Accessories | Carrying pouch, leatherette ear pads, cable clip | - | |
|---|---|---|---|
| Service & Support | Limited warranty - 3 years | - |
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