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
2,534
4
314
3
105
2
78
1
230
Review by Eddy Soeparmin
by Eddy Soeparmin, a year ago
It does really boost the up the volume just by sliding the volume bar in the 100% tab.