Side by side comparison and review of EPOS I SENNHEISER IMPACT SC 660 TC and beyerdynamic DT 990 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 SC 660 TC | beyerdynamic DT 990 PRO |
|---|
| Product Type | Headset - wired - Easy Disconnect | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | 113 g | 250 g | EPOS I SENNHEISER IMPACT SC 660 TC are lighter than EPOS I SENNHEISER IMPACT SC 660 TC headphones. |
| Colour | Black with silver | Black | |
| Earpad Material | Leatherette | - |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT SC 660 TC | beyerdynamic DT 990 PRO |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Open | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 50 - 18000 Hz | 5 - 35000 Hz | beyerdynamic DT 990 PRO offer a larger frequency range than EPOS I SENNHEISER IMPACT SC 660 TC. |
| Max Input Power | - | 100 mW | |
| Total Harmonic Distortion (THD) | - | 0.2% | |
| Sensitivity | 103 dB | 96 dB | EPOS I SENNHEISER IMPACT SC 660 TC have higher sensitivity than beyerdynamic DT 990 PRO. |
| Impedance | 200 Ohm | 250 Ohm | |
| Magnet Material | Neodymium | - |
| MICROPHONE | EPOS I SENNHEISER IMPACT SC 660 TC | beyerdynamic DT 990 PRO |
|---|
| Form Factor | Headset microphone | - | |
|---|---|---|---|
| Type | Boom | - | |
| Frequency Response | 150 - 6800 Hz | - |
| CABLE | EPOS I SENNHEISER IMPACT SC 660 TC | beyerdynamic DT 990 PRO |
|---|
| Cable Type | Headset cable - 1 m | Headphones cable - 3 m | |
|---|---|---|---|
| Cable Length | - | 3 m | |
| Plated Connector | - | Gold |
| CONNECTIONS | EPOS I SENNHEISER IMPACT SC 660 TC | beyerdynamic DT 990 PRO |
|---|
| Connector Type | Headset (EasyDisconnect) | Headphones (mini-phone 3.5mm) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT SC 660 TC | beyerdynamic DT 990 PRO |
|---|
| Included Accessories | Carrying pouch, leatherette ear pads, cable clip | 6.3 mm (1/4") stereo adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - 3 years | - |
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