Introduction
The EPOS C1 Professional Headset is designed for clear communication and comfortable extended use. This manual provides instructions for setting up, operating, and maintaining your headset, ensuring optimal performance.
Key Features
- Exceptional Audio Clarity: Wired headset with 3.5mm connection for crystal-clear sound.
- Comfortable For All-Day Wear: Lightweight, on-ear design with adjustable headband.
- Optimized For Voice Clarity: Noise-canceling boom microphone reduces background distractions.
- Simple Device Compatibility: Connects to smartphones, tablets, and laptops with a standard 3.5mm jack.
- Eco-Friendly And Upgrade-Ready: Delivered in sustainable packaging with support for EPOS Connect software.
- Integrated Remote Control: For easy management of calls and audio.
- LED Mute Indicator: Provides visual confirmation of mute status.
- Enterprise-Grade Hearing Protection: Through EPOS Connect software.
What's in the Box
Verify that all items are present in the package:
- EPOS C1 Headset with integrated cable
- Ear Cushions (pre-installed)
- User Manual (this document)

Figure 1: Contents of the EPOS C1 Headset package.
Setup
- Connect the Headset: Insert the 3.5mm jack of the EPOS C1 headset into the corresponding audio port on your computer, smartphone, or tablet. The headset is plug-and-play and requires no additional drivers for basic functionality.
- Adjust the Headband: Gently extend or retract the headband to achieve a comfortable and secure fit on your head. The ear cups should rest comfortably over your ears.
- Position the Microphone: Adjust the flexible boom microphone so that it is positioned approximately 1-2 inches (2.5-5 cm) from your mouth for optimal voice pickup.

Figure 2: Headset components and connection point.

Figure 3: Plug-and-play simplicity with 3.5mm devices and Chromebooks.
Operating Instructions
Volume Control
The headset features an in-line remote control for easy volume adjustment. Use the volume up (+) and volume down (-) buttons to control the audio output level.
Mute Function
Press the mute button on the in-line remote to mute or unmute your microphone. An LED indicator on the remote will show the microphone's mute status.
Call Management
For devices that support it, the in-line remote may also include a call control button to answer or end calls.

Figure 4: Headset design emphasizing ease of use.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the headset. Do not use liquid cleaners or solvents.
- Storage: Store the headset in a cool, dry place when not in use. Avoid extreme temperatures.
- Cable Care: Avoid sharp bends or excessive pulling on the cable to prevent damage.
- Ear Cushions: The ear cushions are designed for durability but can be replaced if worn. Contact support for replacement options.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from headset | Headset not properly connected; device volume too low; headset muted. | Ensure 3.5mm jack is fully inserted. Increase device volume. Check if headset is muted via in-line control. |
| Microphone not working | Microphone muted; incorrect input device selected on computer/device. | Unmute microphone using in-line control. Verify microphone is selected as input device in your device's audio settings. |
| Poor audio quality | Loose connection; audio source issue; environmental interference. | Check 3.5mm connection. Test with another audio source. Move away from potential interference sources. |
Specifications
| Feature | Detail |
|---|---|
| Brand | EPOS |
| Model Name | C1 3.5mm Jack |
| Connectivity Technology | Wired (3.5 mm Jack) |
| Ear Placement | On Ear |
| Microphone | Noise-Canceling Boom Microphone |
| Control Type | In-line Call Control, Volume Control |
| Weight | 81 Grams (2.86 ounces) |
| Dimensions (L x W x H) | 7.76 x 7.32 x 2.2 inches (approximate) |
| Impedance | 22 Ohms |
| Sensitivity | 110 dB |
| Frequency Range | 20 Hz - 20,000 Hz |
| Compatible Devices | Devices with a 3.5mm audio jack, Chromebook certified |
Warranty and Support
The EPOS C1 Professional Headset comes with a 2-year manufacturer's warranty. For warranty claims, technical support, or further assistance, please visit the official EPOS support website or contact their customer service.
You can find more information and support resources on the EPOS Store on Amazon.
Product Video
Video 1: Overview of the EPOS C1 Professional Headset, highlighting its features and benefits for professional communication.







