Noise cancelling
Short answer
Pair the headphones with your device and connect them to the Marshall Bluetooth app. Push the A.N.C. button to toggle between noise cancelling and transparency mode. Adjust the noise control in the app.
Learn how to activate and use the noise cancelling mode of the Marshall Monitor III A.N.C:
Make sure your headphones are paired with your device and connected to the Marshall Bluetooth app.
Push the A.N.C. button to toggle between noise cancelling and transparency modes.
If you want to adjust the noise control, open the Marshall Bluetooth app and go to the A.N.C. settings.