Excellent solution for one of the most annoying weak points of Youtube. One of the easiest to use extensions I ever used, just install and set the desired volume. It's just perfect.
I also hope youtubers learn how to record audio (I'm really fed of some channels using stereo mics for recording a single voice...)

Works just fine with most of the videos, but not with the music (on sites like vk.com) and music videos (auto-generated on youtube).
But that's not a big deal and I still recommend this extension to everyone.

Very handy for a laptop that has no volume to speak of!

This is the best of many boosters that I have tried.

funciona 10/10

Works instantly!!

Most of the time, it just mutes any sound on the page. Trying to increase the volume doesn't work. The only way to undo it is to reload the page entirely. It doesn't seem to work.

Did not increase volume. Worse and useless because it sucks your personal private information.

Easy to use no useless extra features, everything just as described

latest update broke playback in twitch clips editor

Pretty good volume control add-on but doesnt work on all sites. For instance, it does not work on Spotify's web player.

Although there are many sound boosters and they are similar to each other, this one is the very best one I have used. It precisely clicks any amount lower and higher in volume. No need to use the slider. Also has keyboard keys to use for increase and decrease.