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
2,469
4
311
3
103
2
78
1
223
Review by RK
by RK, 2 years ago
Works perfectly and just as described. Great for getting more use out of laptop speakers.