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2015-09-06 11:57 PM
2015-09-07 03:26 AM
Welcome to the community,
You should check the sound settings on the handset, as you may have an auto sound option turned on which is changing the audio levels.
Menu > Settings > Sound & Notifications > Audio Settings
Have a play in this section.
Let us know how you get on.
2015-09-08 12:00 PM
I have got the same problem with my Xperia (5.0.2).
In addition to the aforesaid, the problem arises after you listening the music first (sound volume and sound quality - ok), then talking or playing by phone and after that I am trying to listen music again - the sound in hearphones becomes awful. Sound volume may be very loud and the same time, sound quality (bass, treble) becomes different settings and it is impossible to listen to music with such awful quality. Only phone restarting helps to return settings back (equalizer settings and type of earphones). I chose type of earphones proceeding from impedance parameters (Hifiman earphones). Please help.
2015-09-09 06:39 PM
2017-10-23 01:21 AM
Yes I noticed. Sony software seems to do automatic compression to your music. This is one of the many reasons I'm switching to another manufacturer phone. The other two are. Turning down volume without even a prompt. And bad engineering on IP65. The o-ring that sits over USB port falls out and water gets inthrough USB micro port and kills display
2018-08-11 11:49 PM
It does it when my phone is fully charged and I have the charger pluged in, while using my headset. When I unpluged the charger, it stopped doing it!