04-24-2017 04:31 AM
So, I bought a Hero5 Black and Karma grip about two months ago and almost straight away I noticed an issue with the sound.
With the USB connections cover door in place, the sound is okay (not brilliant, but ok).
Take the door off (when inserting camera into grip or USB powering the camera) and the sound becomes muffled.
GoPro support suggested not using the camera with the door off(!) however this makes my £300 karma grip useless.
Still waiting on a fix, nearly 6 weeks later.