1. Introduction
The Sennheiser SC 660 ANC USB is a premium, wired headset designed for professionals in contact centers and office environments. It offers outstanding sound performance and advanced noise control features to enhance productivity in noisy settings. This headset is optimized for Unified Communications (UC) and is Skype for Business certified, ensuring seamless integration with your communication platforms.
Key features include Active Noise Cancellation (ANC) for improved listening comfort, an ultra noise-cancelling microphone for crystal-clear conversations, and convenient in-line call controls. Its durable design, crafted from high-quality materials like stainless steel and brushed aluminum, ensures longevity and reliability for daily use.
2. What's in the Box

Image: All components included with the Sennheiser SC 660 ANC USB headset.
Upon unboxing your Sennheiser SC 660 ANC USB headset, you should find the following items:
- Sennheiser SC 660 ANC USB Headset: The main headset unit with integrated microphone.
- USB Cable with In-line Call Control: Permanently attached to the headset, featuring buttons for call management and volume.
- Carry Pouch: A protective case for convenient storage and transport.
- Clothing Clip: For securing the cable to your clothing.
- Leatherette Ear Pads: Pre-installed on the headset for comfort.
- Ear Pad Holders: Components that secure the ear pads to the headset.
- Safety Guide: Important safety information and warnings.
- Quick Guide: A brief setup and usage instruction manual.
3. Setup
3.1 Connecting the Headset
The Sennheiser SC 660 ANC USB headset connects directly to your computer via its integrated USB cable. No additional drivers are typically required for basic functionality on most operating systems (Windows, macOS).
- Locate an available USB port on your computer.
- Plug the USB connector of the headset into the USB port.
- Your computer should automatically detect the headset and install any necessary generic drivers.
- Verify that the headset is selected as the default audio input and output device in your computer's sound settings and within your communication software (e.g., Skype for Business, Microsoft Teams, Zoom).
3.2 Adjusting for Comfort

Image: Front view of the headset, highlighting its adjustable components.
For optimal comfort during extended use, adjust the headset to fit your head properly:
- Headband: Gently slide the earcups up or down along the headband until the headset rests comfortably on your head, with the ear pads covering your ears. The unibody headband is designed for strength and comfort.
- Microphone Boom: Position the microphone boom so that the microphone is approximately 2-3 cm (1 inch) from the corner of your mouth. The boom is flexible and can be adjusted for optimal voice pickup.
4. Operating Instructions
4.1 In-line Call Control Unit

Image: Detailed view of the in-line call control unit.
The in-line call control unit provides easy access to essential call management functions:
- Answer/End Call: Press the Call Button (typically with a phone icon) to answer an incoming call or end an active call.
- Volume Up/Down: Use the + and - buttons to adjust the listening volume.
- Mute Microphone: Press the Microphone Mute Button (typically with a microphone icon) to mute or unmute your microphone. An indicator light on the control unit may show the mute status.
- Redial: Double-press the Call Button to redial the last outgoing call (functionality may vary depending on software).
4.2 Active Noise Cancellation (ANC)
The SC 660 ANC USB features Active Noise Cancellation to reduce background noise for improved listening comfort. The ANC switch is located on the side of the in-line control unit.
- To activate ANC, slide the ANC switch to the ON position.
- To deactivate ANC, slide the ANC switch to the OFF position.
Note: ANC primarily reduces low-frequency ambient noise, such as air conditioning hum or fan noise, enhancing your focus.
4.3 Proximity Sensor Technology
The headset incorporates Proximity Sensor technology for convenient call handling:
- Answering a Call: Simply put the headset on your head to answer an incoming call.
- Putting a Call on Hold: Take the headset off your head to automatically put an active call on hold.
- Resuming a Call: Put the headset back on your head to resume a call that was on hold.
5. Features Overview

Image: Top-front view of the headset, emphasizing its design.
The Sennheiser SC 660 ANC USB headset is engineered with several features to optimize your communication experience:
- Designed for Skype for Business: Optimized for professionals requiring a consistently excellent hands-free communication solution with Skype for Business.
- HD Sound: Powered by Sennheiser HD stereo sound for a clearer and more natural meeting and entertainment experience.
- Easy Disconnect: Features a simple, quick-release mechanism designed to withstand repetitive plugging and unplugging, ideal for shift changes.
- Noise-Cancelling Technology: The microphone filters out unwanted background noise for crystal-clear conversations.
- State-of-the-Art Materials: Constructed with stainless steel hinges, brushed aluminum parts, and Vectran reinforced cables for high durability against everyday use.
- In-line Call Control Unit: Allows you to answer or end calls, control volume, mute your microphone, and redial calls directly from the headset.
- All-Day Comfort: Equipped with large leatherette ear-pads and a unibody headband construction built for maximum strength at stress points, ensuring a comfortable experience throughout the day.
- ActiveGard Technology: Protects against acoustic injury caused by sudden sound bursts on the line, ensuring safe listening levels.
- Travel-Friendly: Features foldable ear cups and includes a carrying case, making it easy to transport wherever your work takes you.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your headset.
- Cleaning: Use a soft, dry cloth to clean the headset. For ear pads, a slightly damp cloth can be used, but ensure they are completely dry before use. Avoid using harsh chemicals or abrasive materials.
- Storage: When not in use, store the headset in its provided carry pouch to protect it from dust and physical damage.
- Cable Care: Avoid sharp bends or excessive pulling on the cable to prevent internal damage. The cable is Vectran reinforced for durability, but proper handling is still recommended.
- Temperature: Do not expose the headset to extreme temperatures (hot or cold) or high humidity.
7. Troubleshooting
If you encounter issues with your Sennheiser SC 660 ANC USB headset, try the following steps:
- No Sound/Microphone Not Working:
- Ensure the headset is securely plugged into a working USB port.
- Check your computer's sound settings to confirm the headset is selected as the default playback and recording device.
- Verify that the microphone is not muted via the in-line control unit or your software application.
- Test the headset on a different USB port or another computer to rule out port or system issues.
- Active Noise Cancellation (ANC) Issues:
- Ensure the ANC switch on the in-line control unit is in the ON position.
- ANC is most effective against low-frequency, constant noises. It may not completely eliminate human voices or sudden loud sounds.
- Intermittent Connection:
- Try a different USB port.
- Ensure the cable is not damaged or kinked.
For more detailed troubleshooting and support, please refer to the official Troubleshooting Guide PDF available online: Sennheiser SC 660 ANC USB Troubleshooting Guide (PDF)
8. Specifications
Detailed technical specifications for the Sennheiser SC 660 ANC USB headset:
| Feature | Specification |
|---|---|
| Model Name | SC 660 ANC USB |
| Manufacturer Part Number | 508311 |
| Brand | EPOS |
| Connectivity Technology | Wired (USB) |
| Headphones Jack | USB |
| Style | Double-sided, ANC, USB |
| Ear Placement | Over Ear |
| Form Factor | Over Ear |
| Noise Control | Active Noise Cancellation |
| Microphone Type | Ultra Noise-Cancelling |
| Frequency Range | 20 Hz - 20,000 Hz |
| Control Type | In-line Call Control (Touch) |
| Compatible Devices | PC |
| Material | Stainless Steel |
| Item Weight | 8.8 Ounces (approx. 249 grams) |
| Product Dimensions | 6.69 x 3.94 x 0.9 inches |
| Water Resistance Level | Not Water Resistant |
| Cable Feature | Retractable (Vectran reinforced) |
| Earpiece Shape | Rounded |
| Carrying Case Material | Lightweight and sturdy fabric |
9. Warranty and Support
For information regarding warranty coverage, technical support, or service for your EPOS | Sennheiser product, please refer to the official EPOS website or contact their customer support directly. Keep your proof of purchase for warranty claims.
Additional resources, including drivers and software updates, may be available on the EPOS support pages.





