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
2,470
4
311
3
103
2
78
1
223
Review by Shockbeez
by Shockbeez, 3 years ago
very awesome for videos too loud or too quiet and I couldn't notice a quality drop unlike most boosted volume apps/add-ons! Very nice.