Basically if you use external speakers and aren't playing content (sound) then you will hear buzzing and clicking regardless of whether you are plugged in or not. This does not occur when using usb speakers, bluetooth, or the speakers on the laptop.
I have been through two Razer 14's from the microsoft store which both have this problem and I have heard from one other person who allegedly went through 3 laptops which all had the same problem. So I would love to hear that someone DOESN'T have this issue as it would give me hope.
Link to 2 videos of issue. on power/ on battery
https://drive.google.com/drive/folders/1vv7DYARKkZZfD5smA1bondCT-ykliluR?usp=sharing
Again this is not support related, as i am interested in other customers answers.