To use these add-ons, you'll need to download Firefox.

Log in
Add-on icon

Reviews for 600% Sound Volume

600% Sound Volume by Aliaksandr

4.5 Stars out of 5
5
2,472
4
312
3
103
2
78
1
223
Review by Viijo
by Viijo, 3 years ago
Works great! thanks so much. Watching videos is now clearer with this extension. thanks again!