Introduction
Welcome to the Dyson OnTrac™ Headphones user manual. This guide provides comprehensive instructions for setting up, operating, maintaining, and troubleshooting your new headphones. Please read this manual thoroughly to ensure optimal performance and longevity of your device.

Front view of the Dyson OnTrac™ Headphones in CNC Black Nickel.
What's in the Box
Your Dyson OnTrac™ Headphones package includes the following items:
- Dyson OnTrac™ Headphones (CNC Black Nickel)
- USB-C Charging Cable
- Protective Case
- Headband
- Ear Cushions (pre-installed)
Setup
1. Initial Charging
Before first use, fully charge your Dyson OnTrac™ Headphones. Connect the provided USB-C charging cable to the headphone's USB Type-C jack and to a compatible power source. A full charge provides up to 55 hours of listening time, even with Active Noise Cancellation enabled.

The headphones are designed for extended use, offering up to 55 hours of battery life.
2. Bluetooth Pairing
- Ensure your headphones are charged and powered on.
- Activate Bluetooth on your device (smartphone, tablet, computer).
- Select "Dyson OnTrac" from the list of available Bluetooth devices.
- Once paired, the headphones will indicate a successful connection. The Bluetooth range is approximately 9 meters (30 feet).
3. MyDyson App Integration
For enhanced control and customization, download the MyDyson app from your device's app store. The app allows you to:
- Adjust EQ settings.
- Manage Active Noise Cancellation (ANC) modes.
- Receive automatic software updates.
- Monitor sound exposure and noise pollution.

The MyDyson app provides advanced control and features for your headphones.
Operating Your Headphones
Active Noise Cancellation (ANC)
The Dyson OnTrac™ Headphones feature best-in-class noise cancellation, utilizing 8 Active Noise Cancelling microphones that sense outside sounds 384,000 times per second. Double-tap the outer cap of the earcups to switch between ANC modes:
- Isolation Mode: Blocks out ambient sound for an immersive listening experience.
- Transparency Mode: Allows you to hear your surroundings without removing the headphones.

The advanced noise cancellation system within the Dyson OnTrac™ Headphones.
Enhanced Sound Range
Experience an enhanced sound range from 6Hz to 21kHz. A Digital Signal Processor (DSP) reveals expanded sub-bass and high-end brilliance, allowing you to hear more detail in your audio.

Visual representation of the wide frequency response (6Hz - 21kHz) for detailed audio reproduction.
Comfort and Fit
The headphones are engineered for all-day comfort, featuring soft microfibre ear cushions, even weight distribution, and optimized clamp force. They have been tested on diverse head sizes to ensure a comfortable fit for various users.

The Dyson OnTrac™ Headphones are certified comfortable by US Ergonomics, ensuring a pleasant wearing experience.
Customization
Personalize your headphones with customizable outer caps and ear cushions available in a range of colors and finishes. These can be easily interchanged to match your style.

The modular design allows for easy customization of ear cushions and outer caps.
Controls and Features
- Touch Control: Manage playback, volume, and calls with intuitive touch controls on the earcups.
- Crystal-clear Calls: Integrated microphones ensure clear voice transmission during calls.
- Head Detection: Battery-saving feature that pauses audio when headphones are removed and resumes when put back on.

The control button offers simple, one-touch operation for various functions.
Maintenance
Cleaning
- Ear Cushions: Gently wipe the microfibre ear cushions with a soft, dry, lint-free cloth. For deeper cleaning, the customizable ear cushions can be removed and cleaned according to their specific material care instructions.
- Headband and Outer Surfaces: Use a soft, slightly damp cloth to wipe the headband and outer surfaces of the earcups. Avoid using harsh chemicals or abrasive materials.
- Charging Port: Ensure the USB-C charging port is free from dust and debris. Use a soft, dry brush if necessary.
Storage
When not in use, store your Dyson OnTrac™ Headphones in the provided protective case to prevent scratches and damage. Store in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
If you encounter issues with your Dyson OnTrac™ Headphones, please refer to the following common solutions:
- No Power: Ensure the headphones are fully charged using the provided USB-C cable. Check the charging cable and power adapter for damage.
- Cannot Pair via Bluetooth:
- Ensure Bluetooth is enabled on your device and the headphones are in pairing mode.
- Move the headphones closer to your device (within 9 meters).
- Forget "Dyson OnTrac" from your device's Bluetooth settings and attempt to re-pair.
- Restart both your headphones and your device.
- No Sound or Low Volume:
- Check the volume levels on both your headphones and the connected device.
- Ensure the headphones are properly connected via Bluetooth.
- Test with a different audio source or device.
- Active Noise Cancellation Not Working:
- Ensure ANC is activated by double-tapping the outer cap.
- Check for any obstructions around the microphone ports.
- Update headphone firmware via the MyDyson app.
If the issue persists, please contact Dyson customer support.
Specifications
| Brand | Dyson |
| Model Name | Dyson OnTrac™ headphones CNC Black Nickel |
| Model Number | 8MF-XD-THA0135A |
| Colour | Black Nickel |
| Ear Placement | Over Ear |
| Noise Control | Active Noise Cancellation |
| Battery Average Life | 55 Hours |
| Audio Driver Type | Dynamic Driver |
| Frequency Range | 6Hz to 21kHz |
| Enclosure Material | Aluminium |
| Item Weight | 451 Grams |
| Bluetooth Version | 5.0 |
| Bluetooth Range | 9 Metres |
| Headphone Jack | USB Type-C Jack |
| Control Type | Touch Control |
| Water Resistance Level | Waterproof |
| Compatible Devices | Laptops, Desktops, Tablets, Cellphones, Music Production Equipment, Gaming Consoles, Smart Speaker, Television |
Warranty Information
The Dyson OnTrac™ Headphones come with a 2-year warranty from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use. Please retain your proof of purchase for warranty claims. For full terms and conditions, refer to the warranty card included in your product packaging or visit the official Dyson website.
Support
For further assistance, technical support, or service inquiries, please contact Dyson customer support:
- Customer Service Number: 18002586688
- Manufacturer: Dyson India Pvt Ltd
- Registered Office: #22, First Floor, Augusta Point, Golf Course Road, Sector 53, Gurugram, Haryana, India - 122002
- Online Support: Visit the official Dyson website for FAQs, product registration, and online chat support.
- MyDyson App: Utilize the MyDyson app for software updates and personalized support.