600% Sound Volume by Aliaksandr

4.5 Stars out of 5

2,468

311

103

223

3,183 reviews

Rated 5 out of 5
by Firefox user 17644166, 2 years ago
Rated 5 out of 5
by SPEEDBALL50, 2 years ago
Rated 5 out of 5
by Firefox user 17643846, 2 years ago
I just added it and it seems to work as it promises.
Rated 5 out of 5
by pyrushh, 2 years ago
love this addon
Rated 5 out of 5
by Firefox user 14577864, 2 years ago
Rated 1 out of 5
by Speede-du-potar, 2 years ago
Ne marche plus ? Ben alors une étoile !
Rated 5 out of 5
by Mike, 2 years ago
Fixed my laptops low sound issue. Before I could hardly hear a thing now I have to turn it down.
Rated 5 out of 5
by SloshDeco, 2 years ago
Rated 5 out of 5
by PowPow216, 2 years ago
Simple, easy to use, does what it says it does. Easy 5 Stars
Rated 5 out of 5
by Firefox user 13843725, 2 years ago
Rated 4 out of 5
by DEE, 2 years ago
Rated 5 out of 5
by The_Blinded, 2 years ago
Rated 5 out of 5
by Lep, 2 years ago
Rated 5 out of 5
by art, 2 years ago
Rated 5 out of 5
by Firefox user 17635729, 2 years ago
Rated 5 out of 5
by odns, 2 years ago
Perfect as it its. A volume slider & booster that works amazingly!
Rated 5 out of 5
by Connor, 2 years ago
Genuine life-saver. Perfect for people like myself that have hard of hearing issues. Some videos are simply too quiet and this saves my life. Makes content way more enjoyable.
Rated 4 out of 5
by KennyG, 2 years ago
A great option for people like me who don't hear well to amp up the volume
Rated 5 out of 5
by Firefox user 17630952, 2 years ago
Rated 5 out of 5
by Marc_za, 2 years ago
As it says: simple and reliable. Awesome.
Rated 5 out of 5
by crumb, 2 years ago
Nothing more, nothing less. Perfect.
Rated 5 out of 5
by revkae, 2 years ago
Rated 5 out of 5
by Mushi, 2 years ago
Does what it says on the tin! Simple to use but an amazing improvement to browsing and youtube.
Rated 5 out of 5
by Firefox user 17627920, 2 years ago
Rated 5 out of 5
by Nyaa, 2 years ago