The noise canceling effects are not sufficient.

  • Make sure the noise canceling function is turned on. You can check the noise canceling settings with “INZONE Hub” or the “Sony | Headphones Connect” app.
  • If the size of the earbud tips does not match the size of your ear canals or the headset is not being worn properly in your ears, tap operations may not work correctly, or you may not obtain the correct sound qualities, noise canceling effects, or call performance.
    If any of this is the case, try the following.
    • Change the earbud tips to ones that fit more snugly in your ears. When changing the earbud tips, try the earbud tip sizes in order from the larger ones to the smaller ones. The size of the left and right earbud tips may be different.
    • INZONE Hub” or the “Sony | Headphones Connect” app will help you to determine which earbud tips suit you best to achieve the optimal noise canceling effect.


    • The function that determines the optimal earbud tips for you measures the air-tightness of the earbud tips and determines whether or not the headset units are being worn in your ears correctly. Select a size that fits comfortably.
  • Check that you are wearing the headset properly in your ears. Wear the headset so that the earbud tip is comfortably situated as deep in the ear canal as possible.
  • The noise canceling function is effective for noise in low frequency ranges in locations such as offices, near air conditioners, on trains, and on planes and is not as effective for noise in higher frequencies, such as human voices.