Replacing the earbud tips

M-sized earbud tips come attached to the left and right headset units at the time of purchase.

If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, tap operations or Speak-to-Chat speech detection 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 most suitable size of the earbud tips for left and right ears may be different.
  • The “Sony | Headphones Connect” app will help you to determine which earbud tips suit you best to achieve the optimal noise canceling effect, sound quality, etc.
  • 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 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.

Noise isolation earbud tips

The size of the earbud tips can be determined based on the color of the inside of the earbud tips.

SS size: red

S size: orange

M size: green

L size: light blue

  1. Remove the earbud tip.

    Hold the headset unit and twist the earbud tip while rotating it to pull it out.

    Do not pinch the end of the earbud tip when removing it.

    Illustration of removing the earbud tip while rotating it away from the headset unit

  2. Attach the earbud tip.

    Push the earbud tip firmly onto the sound conduit (sound output tube) on the headset so that the earbud tip covers the inner end of the sound conduit. Do not attach the earbud tip in a loose or skewed manner.

    Illustration of fitting the projecting part of the headset unit with the recess of the earbud tip to attach the earbud tip

    If the earbud tip is not completely attached, the earbud tip may be removed from the headset and the sound quality, noise canceling effects, and wearability may be impaired.

  3. Check that the earbud tip is securely attached.

    Twist the earbud tip to one side and check that the stem of the earbud tip is completely covering the sound conduit on the headset unit.


  • Earbud tips are consumables.
  • Avoid washing with water, wet wipes, and the use of organic solvents such as alcohol, as these can cause premature deterioration.

  • The earbud tips deteriorate through long-term use and storage. When there are cracked, peeled, or chipped portions, refrain from using them.
    If the earbud tips deteriorate, they cannot achieve proper sound qualities or noise canceling effects, and can cause injuries or diseases as the earbud tips may come off and remain in the ear.
  • As the earbud tips fit more snugly in your ears, you may feel a strain to your ears. If you experience discomfort, discontinue use.
  • Do not pull on the polyurethane foam portion of the earbud tip. If it is separated from the earbud tip, it will not function.
  • Do not subject the polyurethane foam portion of the earbud tip to pressure for over long periods of time. It may cause deformation and it may be difficult to return the earbud tip to the original shape.
  • When the earbud tips become dirty, do not wash them in water, and wipe off the dirt using a dry cloth. Do not use alcohol, etc. Doing so may quicken the deterioration.
  • When the earbud tips get soaked, drain the liquid well, and make sure that the earbud tips are dried before use or storage.
  • The varying sizes of the holes on the polyurethane foam portion of the earbud tip have no effect on the sound quality.
  • You may hear a cracking noise in your ears when wearing the headset. However, this is not a malfunction.
  • The foam materials may become firm at a low temperature. Warm the earbud tips a little with your hands before use.
  • When the environmental temperature or usage temperature is high, the polyurethane foam may take time to return to its original shape.
  • If you feel that the bass sound has become insufficient (or that the sound quality has deteriorated), exchange the earbud tips with new ones.