Chosen Solution
When it is not charging it is fine, perfect audio. When I am using it while it charges or it is just on while charging, it makes this static or humming noise, not loud enough to go over my other audio but its there and gets really annoying when I have no other sound to over lap it.
Hi, What are you charging it with? If it is an AC / DC adapter then perhaps the noise is coming from that. Try a different charging source and see if it disappears “Nancy Wake”? Interesting! Cheers.