Exactly what I have been needing with the variability of YouTube volumes. Thank you!

good awesome

Just wow ! recommend it !

Not bad at all. Thank you for the free add-on.

My laptop volume was originally at like 20db even though it was 100%, now i can hear when i used this app. 10 out of 10!!!

Funciona perfeitamente.
Mas poderia memorizar melhor a seleção de volume para as paginas, quando se fecha o firefox ele reseta para 100%.

Doesn't work for all sites.

Excellent boost in sound from low input sound!

Simply does not work. (for HTML5 Apps)
- Also stop with the begging to view an ad

nice

Wonderful extension, actually works!

Perfect

Has worked well for youtube and streaming sports.

Just what I needed to watch YouTube videos with low volume. Great extension!

perfect