Product Overview
The Logitech G635 is a wired gaming headset designed for PC use, featuring advanced audio technology for an immersive experience. It incorporates large 50mm Pro-G drivers for detailed sound reproduction and DTS Headphone:X 2.0 surround sound for precise positional audio. The headset also includes LIGHTSYNC RGB lighting, which is customizable and can react to in-game actions. Communication is handled by a 6mm flip-to-mute microphone, and the headset offers programmable G-keys for enhanced control. Customization and EQ settings are managed through the Logitech G Hub software.

Image: Logitech G635 Gaming Headset, front view. This image displays the overall design of the headset with its earcups and headband.
Package Contents
- Logitech G635 Headset
- Micro-USB cable
- 3.5 mm audio cable
- User Documentation
Setup Instructions
- Connect to PC via USB: For full functionality, including DTS Headphone:X 2.0 surround sound and LIGHTSYNC RGB, connect the headset to your PC using the provided Micro-USB cable.
- Connect to PC/Console via 3.5mm Audio Jack: For basic audio and microphone functionality, connect the headset using the 3.5mm audio cable. Note that advanced features like DTS Headphone:X 2.0 and LIGHTSYNC RGB may not be available via 3.5mm connection.
- Install Logitech G Hub Software: Download and install the Logitech G Hub software from the official Logitech G website. This software is required to customize LIGHTSYNC RGB lighting, program G-keys, and adjust EQ settings for optimal audio performance.

Image: Side view of the Logitech G635 headset, illustrating the connection points for the Micro-USB and 3.5mm audio cables.
Video: Official product video for the Logitech G635 and G935 headsets, demonstrating features and setup. This video provides a visual guide to the headset's capabilities and initial configuration.
Operating Instructions
Audio Features
- 50mm Pro-G Drivers: These drivers are designed to deliver clear, precise audio with reduced distortion, enhancing the overall sound experience.
- DTS Headphone:X 2.0 Surround Sound: This technology provides a 3D soundscape, allowing for precise positional audio in supported games. Activate and configure this feature via the Logitech G Hub software.

Image: Graphic illustrating the DTS Headphone:X 2.0 surround sound technology, emphasizing precise positional audio.
LIGHTSYNC RGB Lighting
- The headset features customizable LIGHTSYNC RGB lighting. Use the Logitech G Hub software to select from approximately 16.8 million colors, create custom effects, or synchronize lighting with in-game actions.

Image: Close-up of the Logitech G635 earcup showcasing the customizable LIGHTSYNC RGB lighting in various colors.
Microphone and Controls
- 6mm Flip-to-Mute Microphone: The integrated microphone provides clear voice communication. To mute the microphone, simply flip it up. A red indicator light on the mic will show when it is muted.
- Programmable G-Keys: The headset features programmable G-keys (G1, G2, G3) on the left earcup. These can be assigned custom functions, macros, or commands using the Logitech G Hub software.
- Volume Control Knob: Adjust the audio volume using the dedicated knob located on the left earcup.
- Mute Button: A separate mute button is available for quick microphone muting.

Image: Diagram highlighting the location of the programmable G-keys, volume control, and mute button on the Logitech G635 headset.

Image: Close-up view of the 6mm flip-to-mute microphone on the Logitech G635 headset.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the headset. Avoid abrasive cleaners or solvents. For the fabric earcups, gentle wiping with a damp cloth may be suitable, but avoid excessive moisture.
- Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Handle the Micro-USB and 3.5mm audio cables with care. Avoid sharp bends or excessive pulling to prevent damage. Ensure the Micro-USB connection is secure when in use.
Troubleshooting
No Audio or Distorted Sound
- Check Connections: Ensure both the Micro-USB or 3.5mm audio cable is securely connected to the headset and your device.
- Volume Levels: Verify that the volume knob on the headset is turned up and that your device's audio output is not muted or set too low.
- Software Settings: Open Logitech G Hub and check audio settings, including EQ and surround sound configurations. Ensure the G635 is selected as the default audio output device in your system settings.
- Cable Integrity: If using the Micro-USB cable, ensure it is not damaged. A faulty cable can lead to intermittent audio.
Microphone Not Working
- Flip-to-Mute: Ensure the microphone is flipped down and not in the muted position. Check for the red indicator light.
- Mute Button: Verify that the microphone mute button on the headset is not activated.
- Software Settings: In Logitech G Hub, check microphone input levels and ensure the G635 microphone is selected as the default input device in your system and application settings (e.g., Discord, game chat).
- Cable Connection: A loose Micro-USB connection can affect microphone functionality. Re-seat the cable firmly.
LIGHTSYNC RGB Not Functioning
- USB Connection Required: LIGHTSYNC RGB functionality requires the headset to be connected via the Micro-USB cable. It is not available when using only the 3.5mm audio cable.
- Logitech G Hub: Ensure Logitech G Hub software is running and the lighting settings are configured as desired.
Specifications
| Feature | Detail |
|---|---|
| Brand | Logitech G |
| Model Name | Logitech G635 Gaming Headset |
| Model Number | 981-000748 |
| Connectivity Technology | Wired (Micro-USB, 3.5 mm Jack) |
| Ear Placement | Over Ear |
| Audio Driver Type | Hybrid Driver |
| Audio Driver Size | 50 mm (Pro-G) |
| Frequency Response | 20 Hz - 20,000 Hz |
| Microphone | 6 mm Flip-to-Mute |
| Surround Sound | DTS Headphone:X 2.0 |
| Lighting | LIGHTSYNC RGB |
| Programmable Keys | 3 G-keys |
| Weight | 344 g |
| Material | Plastic (with stainless-steel bands) |
| Compatible Devices | Gaming Consoles, PCs |

Image: Comparison table detailing differences between Logitech G633 and G635 models, including surround sound version, driver size, and microphone size.
Warranty Information
The Logitech G635 Gaming Headset comes with a 2 Years Limited Hardware Warranty. For detailed terms and conditions, please refer to the official Logitech G website or the warranty documentation included with your product.
Support
For further assistance, software downloads (Logitech G Hub), and updated user documentation, please visit the official Logitech G support website. You can also find FAQs and community forums for additional help.
Logitech G Hub Software: Essential for customizing your headset's features, including LIGHTSYNC RGB, G-key assignments, and audio EQ settings. Ensure you have the latest version installed for optimal performance.







