Question Speaker causes buzzing sound when connected to PC

[ihatemymonitor]

Speaker: https://www.amazon.com/dp/B07PBV3GWC

when its line connected to my pc (DC5V AUX to my PC's Audioback) it has a constant buzzing hissing sound. it comes and goes. It ruins the audio completely.

I do not exerpeince this when its in bluetooth mode. Only via my PC.

How to fix?

Sample video: www.streamable.com/xg9gdw

 

[jsedit]

Very late answering this - so you've most likely solved the issue - but do a search for Ground Loop Isolator. If that's the sound you're hearing, spend £8 on one on Amazon, and see if that fixes it.