Noise Cancelling is not working effectively on my EAH-A1000

1. Make sure the headphones are worn correctly.
   
2. Confirm that your entire ear fits inside the ear pad.
3. Adjust the sliders so that the headphones fit comfortably and securely over your ears.
4. Check the fit again and test the Noise Cancelling function.

Note: A proper fit is important for effective Noise Cancelling performance and optimal sound quality.