1. Introducció
The EPOS Sennheiser IMPACT SC 660 USB ML is a premium, wired, double-sided USB headset designed for professionals. It is optimized for Unified Communications (UC) and certified for Skype for Business, offering outstanding sound performance, convenient call handling, durability, and all-day comfort. This headset features HD sound, an ultra noise-cancelling microphone, and a USB connector for seamless integration with various devices and platforms.

Figura 1: Frontal view of the EPOS Sennheiser IMPACT SC 660 USB ML Headset.
2. Què hi ha a la caixa
Carefully unpack your EPOS Sennheiser IMPACT SC 660 USB ML headset and ensure all components are present:
- IMPACT SC 660 USB ML Headset
- Funda protectora
- Cable clip mounted on headset
- Leatherette ear pad/s (spare)
- Suport magnètic
- Guia ràpida
- Guia de seguretat

Figure 2: All included components: headset, carry pouch, in-line call control, clothing clip, USB connector, leatherette ear pads, ear pad holders, safety guide, and quick guide.
3. Configuració
The IMPACT SC 660 USB ML headset is designed for simple plug-and-play setup.
3.1 Connexió dels auriculars
- Localitza un port USB disponible a l'ordinador o a un dispositiu compatible.
- Plug the USB connector of the headset into the USB port.
- The headset will be automatically recognized by your operating system. No additional drivers are typically required for basic functionality.
3.2 Compatibilitat de programari
This headset is optimized for Unified Communications (UC) and certified for various platforms, ensuring seamless integration and optimal performance:
- Skype per a empreses
- Microsoft Teams
- Google Meet
- Alcatel-Lucent Enterprise
- Webex de Cisco
- Avaya
- Funciona amb Chromebook

Figure 3: The headset is optimized for various Unified Communications platforms, including Microsoft Teams, Google Meet, Alcatel-Lucent Enterprise, Webex by Cisco, Avaya, and Chromebook.
3.3 Com portar els auriculars
Adjust the headband and microphone boom for a comfortable and secure fit. The microphone boom is flexible to allow for optimal positioning near your mouth.

Figure 4: A person wearing the headset, demonstrating proper microphone positioning for natural, clear conversations with EPOS Voice and noise-cancelling microphone technology.
Video 1: Official product description video for the EPOS Sennheiser IMPACT SC 600 Series, highlighting key features and benefits for business communication.
4. Instruccions de funcionament
The IMPACT SC 660 USB ML headset provides intuitive controls for managing your calls and audio.
4.1 In-Line Call Control Unit
The headset features an in-line call control unit for easy management of calls and audio settings:
- Respondre/Finalitzar la trucada: Press the dedicated call button to answer or end a call.
- Control de volum: Feu servir els botons '+' i '-' per ajustar el volum d'escolta.
- Silenciar el micròfon: Press the microphone mute button to mute or unmute your microphone.
- Torna a marcar: Some applications may support redialing directly from the control unit.
4.2 Ús del micròfon
The ultra noise-cancelling microphone filters out unwanted background noise, ensuring crystal-clear conversations. Position the microphone approximately two fingers' width from the corner of your mouth for optimal voice pickup.
4.3 Característiques de so
- So HD: Powered by a neodymium speaker, the headset delivers clear and natural voice and audio experiences.
- ActiveGard Technology: This technology protects users against acoustic injury caused by sudden sound bursts on the line.
- Sound Enhancement Profiles: The headset automatically adjusts sound enhancement profiles for optimal communication or multimedia listening.

Figura 5: lateral view of the headset, highlighting the in-line call control unit and USB connector.

Figure 6: Image illustrating how sound enhancement profiles adjust automatically for optimal communication or multimedia experiences.
5. Manteniment
Proper care and maintenance will extend the life and performance of your headset.
5.1 Neteja
- Coixinets per a les orelles: The soft leatherette ear pads can be gently wiped with a damp drap. Assegureu-vos que estiguin completament secs abans d'usar-los.
- Headset Body: Use a soft, dry cloth to clean the headset body. Avoid using harsh chemicals or abrasive materials.
5.2 Emmagatzematge
When not in use, store the headset in its protective case. The ear cups can be folded flat for easy transportation and storage, protecting the headset from damage.
5.3 Cura del cable
The headset features Vectran reinforced cables for enhanced durability. Avoid sharp bends or excessive pulling on the cable to prevent damage.
6. Solució De Problemes
If you encounter issues with your headset, try the following basic troubleshooting steps:
- Sense so/Micròfon no funciona:
- Assegureu-vos que el connector USB estigui completament inserit al port.
- Check your computer's audio settings to ensure the headset is selected as the default playback and recording device.
- Verify that the microphone is not muted using the in-line control unit.
- Try plugging the headset into a different USB port or another computer to rule out port or system-specific issues.
- Qualitat de so baixa:
- Adjust the volume using the in-line control or your computer's settings.
- Ensure the microphone is positioned correctly near your mouth for clear voice pickup.
- Comproveu si hi ha algun dany físic al cable o als connectors.
- Auriculars no reconeguts:
- Reinicieu l'ordinador.
- Assegureu-vos que el vostre sistema operatiu estigui actualitzat.
For more complex issues, refer to the detailed Safety Guide or Quick Guide included in the box, or contact EPOS customer support.
7. Especificacions
| Nom del model | IMPACT SC 660 USB ML |
| Marca | EPOS |
| Tecnologia de connectivitat | USB |
| Conector d'auriculars | USB |
| Col·locació de l'orella | A l'orella |
| Factor de forma | A l'orella |
| Color | Negre |
| Material | Plàstics |
| Pes de l'article | 7.9 unces (224 grams) |
| Dimensions del producte | 13 x 2.44 x 2.44 polzades |
| Resposta de freqüència (micròfon) | 150 – 6,800 Hz (banda ampla) |
| Frequency Response (Speaker) | 50-18,000 Hz |
| Impedància | 200 ohms |
| Control de soroll | Cancel·lació de soroll (micròfon) |
| Característica especial | Lleuger |
| Dispositius compatibles | Laptops, Tablets (via USB) |
| Característica del cable | Retractable, Vectran reinforced |
| Tipus de control | Call Control (in-line remote) |
8. Garantia i assistència
8.1 Informació de la garantia
The EPOS Sennheiser IMPACT SC 660 USB ML headset comes with a Garantia internacional 3 anys. This warranty covers manufacturing defects and ensures peace of mind regarding the quality and durability of your headset. Please retain your proof of purchase for warranty claims.
8.2 Atenció al client
For technical assistance, warranty claims, or further inquiries, please visit the official EPOS website or contact their customer support directly. Refer to the contact information provided in your Safety Guide or on the EPOS weblloc.