Troubleshooting : A.N.C. not working
If you are having issues with the Active Noise Cancelling functionality, there are a few troubleshooting tips we advise you try to resolve the issue:
Ensure that the headphone is switched on.
Push the control knob for 2 seconds to turn on your headphones.
Ensure that the ANC is switched on.
Push the ANC button for 2 seconds to turn ANC on. Short-press the ANC button to toggle the ANC modes.
Check the ANC level in the Marshall Bluetooth app.
Go to the Marshall Bluetooth app and set the level of the ANC in the ANC settings menu.