I have the same problem with my Sony Z1, after updating to lollipop, there is a definite problem with the sound. Like others I am experiencing, no bass, bad sound quality and high volume. Occasionally the sound is fine, occasionally it isn't. I have found no logic to it. It does not just happen with the walkman app. It happens with Google play music as well. This needs to be fixed asap Sony or you will lose many loyal customers!
... View more