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!!

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

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.

Sería bueno que tuviera un apartado donde se puedan consultar los atajos de teclado