Very Sick Finnish siren

[ACAFan20]

Today i was just scrolling through my Youtube recommended list and found this very sick Instoma AHV 2000 siren. If you watch the video and listen to the Voice, You can confirm this thing is Very sick... Does anyone know what just happened? Its probably a mic overload but WOW this thing is very sick that it sounds like its gonna explode.

The video:
https://www.youtube.com/watch?v=l8cwdufzIpI