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
2,679
4
324
3
111
2
79
1
241
Review by Firefox user 18948069
by Firefox user 18948069, a month ago
As a deaf person with 7% left, this add-on has been such a lifesaver when I only need a tab to be louder and not my entire PC!