Anyone have this issue with the 7000 series inspiron  2 in 1s?

Where the speaker and audio jack sound crackles without the power plugin?

I went I far as to ship it to dell to fix and now its back in my procession, and still i have this problem. Now I am starting to wonder if this is a known defect due to the small batter.  

Yes I even played with power management to set for performance and not battery safer, still some crackling. 

Any help would be greatly appreciated.