Weird sound quality through the speaker after upgrade to marshmallow

[AlvinL]

My Xperia C5 , having trouble after i upgrade to marshmallow . When i play music , it sound like a wet speaker (clearaudio+ on) , when turn 'CA+' off , and i set the equalizer by myself (custom) the sound is like my phone before the upgrade. Someone please tell me how to repair it. Thank you

[YoGem]

@AlvinL wet speaker? Like there is too much treble, lack mediums and bass? ClearAudio+ Improve the clarity of "speeches" so that may be the right behavior.