600% Sound Volume by Aliaksandr

4.5 Stars out of 5

2,678

324

111

241

3,433 reviews

Rated 3 out of 5
by Anonymous, 4 years ago
When using it, playback speed of YouTube videos don't change. DEVELOPERS PLEASE FIX IT...
Rated 1 out of 5
by Firefox user 16783935, 4 years ago
Does not work with Kaltura embedded videos, the only thing I'd use it for (professor makes super quiet lessons).
Rated 5 out of 5
by Firefox user 12120963, 4 years ago
Rated 5 out of 5
by Firefox user 13804775, 4 years ago
Very nice and efficient.
Rated 5 out of 5
by Saeed, 4 years ago
Rated 5 out of 5
by Hosam, 4 years ago
Rated 5 out of 5
by Dystopian Utopian, 4 years ago
Works great and doesn't blow the speakers out like some others
Rated 5 out of 5
by Firefox user 16756422, 4 years ago
Rated 5 out of 5
by RealSmoke, 4 years ago
nice
Rated 5 out of 5
by Pavlin, 4 years ago
very good extension
Rated 5 out of 5
by Firefox user 16775690, 4 years ago
Rated 4 out of 5
by Junior, 4 years ago
Rated 2 out of 5
by alN, 4 years ago
when you increase volume your video speed will set back to 1x.
Rated 5 out of 5
by Never, 4 years ago
Rated 5 out of 5
by Firefox user 16031787, 4 years ago
Works great
Rated 5 out of 5
by Firefox user 14415264, 4 years ago
Rated 5 out of 5
by Firefox user 15114105, 4 years ago
Si, good tool.
Rated 1 out of 5
by Firefox user 16766048, 4 years ago
Doesn't works.
Rated 5 out of 5
by Firefox user 15313904, 4 years ago
Rated 5 out of 5
by Firefox user 14853498, 4 years ago
Rated 5 out of 5
by Yung Habriel, 4 years ago
Pretty epic way to listen to Kendrick lamar
Rated 5 out of 5
by Pablo Cifuentes, 4 years ago
Rated 5 out of 5
by Firefox user 16758962, 4 years ago
Rated 5 out of 5
by Alex, 4 years ago
Rated 5 out of 5
by Alyest, 4 years ago