Side by side comparison and review of EPOS I SENNHEISER IMPACT SC 660 TC and Poly EncorePro 520V. 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 | Poly EncorePro 520V |
|---|
| Product Type | Headset - wired - Easy Disconnect | Headset - wired - 3.5 mm jack | |
|---|---|---|---|
| Series | - | EncorePro 500 series | |
| Height | - | 6.7 cm | |
| Width | - | 11.1 cm | |
| Depth | - | 14.9 cm | |
| Weight | 113 g | 74 g | Poly EncorePro 520V are lighter than EPOS I SENNHEISER IMPACT SC 660 TC headphones. |
| Colour | Black with silver | Black | |
| Earpad Material | Leatherette | Artificial leather |
| SOUND QUALITY | EPOS I SENNHEISER IMPACT SC 660 TC | Poly EncorePro 520V |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Poly EncorePro 520V are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard DIGITAL | |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 50 - 18000 Hz | - | |
| Sensitivity | 103 dB | - | |
| Impedance | 200 Ohm | - | |
| Diaphragm | - | 5.6 mm | |
| Signal-To-Noise Ratio | - | 50 dB | |
| Magnet Material | Neodymium | - |
| MICROPHONE | EPOS I SENNHEISER IMPACT SC 660 TC | Poly EncorePro 520V |
|---|
| Form Factor | Headset microphone | - | |
|---|---|---|---|
| Type | Boom | Boom | |
| Microphone Operation Mode | - | Omni-directional | |
| Noise Cancelling | - | Yes | Poly EncorePro 520V microphone can cancel out ambient noise. |
| Frequency Response | 150 - 6800 Hz | 20 - 16000 Hz | Poly EncorePro 520V offer a larger microphone frequency range than EPOS I SENNHEISER IMPACT SC 660 TC. |
| Sensitivity | - | 40 dB | |
| Sensitivity Margin | - | +/- 3dB |
| CABLE | EPOS I SENNHEISER IMPACT SC 660 TC | Poly EncorePro 520V |
|---|
| Cable Type | Headset cable - 1 m | - | |
|---|---|---|---|
| Cable Length | - | 78.5 cm |
| FEATURES | EPOS I SENNHEISER IMPACT SC 660 TC | Poly EncorePro 520V |
|---|
| Features | - | Boom mic length 135mm, 290° rotatable microphone |
|---|
| CONNECTIONS | EPOS I SENNHEISER IMPACT SC 660 TC | Poly EncorePro 520V |
|---|
| Connector Type | Headset (EasyDisconnect) | Headset (mini-phone 3.5mm) |
|---|
| OTHERS | EPOS I SENNHEISER IMPACT SC 660 TC | Poly EncorePro 520V |
|---|
| Included Accessories | Carrying pouch, leatherette ear pads, cable clip | - | |
|---|---|---|---|
| Software Certification | - | Certified for Skype for Business, UC certified | |
| Supported Host Device OS | - | macOS, Windows | |
| Service & Support | Limited warranty - 3 years | Limited warranty - 2 years |
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