Xperia Z4 tablet: Static noise in speakers, what causes it?

[F17jager]

Xperia Z4 tablet: Static noise in speakers

So i just got the tablet today, and im not sure if there were static noise when i got it but now there is always static noise when some sort of sound is playing. And you hear the static noise better when the volume is low. I really hope its a software problem!
But does anyone possibly know what causes this?

 

[Rukbat]

Re: Xperia Z4 tablet: Static noise in speakers

Just got it today? Have it replaced.

It could be software, hardware, bad speakers, a loose connection - that's what warranties are for.