Lumia 950 speakers/sound system

So my speaker makes a very annoying squeaking/vibrating sound when certain pitched sounds come out from it. I noticed it from watching the latest Ask Dan. Is this something that others are experiencing? I tried to replicate it on my Lumia 1020 watching the same video but nothing.

Also, I've noticed that my volume often drops randomly. My hope is that it's not something that's just happening n my phone since I think I've had it slightly passed the AT&T 30 day return date policy.