Article ID : 00231524 / Last Modified : 10/06/2023Print

There's a difference in volume between the left and right sides, or the bass (low frequency) sound is insufficient

    IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.

    If you feel that the bass (low frequency) sound is low or there's a difference in volume levels between the left and right sides of the headphones, change the earbuds to another size that comfortably and snugly fits both ears.


    1. Size M earbuds come attached to both sides of the headphones at the time of purchase.
    2. Try the earbud sizes in order from the larger sizes to the smaller sizes, and use the ones that feel more sealed. The best size earbuds may be different for the left and right ears.
    3. Make sure that you are wearing the earbuds properly.
      • For WF-1000XM5, WF-1000XM4, and LinkBuds S, you can measure the air-tightness of the earbud tips using the Determines Optimal Earbud Tips function of the Sony | Headphones Connect app.
        For details, refer to the How to wear the headphones properly and select most suitable earbud tips article.
      • Using the WF-SP800N headset as an example, as you insert the headset units into each ear, twist the headset to secure the arc supporter into your ear grooves.
        Image fitting the arc supporter to the ear
      • Ear grooves
      • Arc supporter