Thank you Aliaksandr, now I can hear my television shows with my broken headphones! :)

Simple and effective.

I have finally found a youtube audio booster, this extension is a blessing for playing low volume video.

even works on sites where sound-fixer doesnt, like some sites where you can watch movies

This add-on is a must have for me. Many YouTube videos have a very low volume and with "600% Sound Volume" I can listen to them.

I really like the addon, it does exactly what I want it to do... I have to turn it off to play tiktok videos in FF though. Not a big problem, but if that could be fixed that would be nice

Works very well on my laptop, which has not so good sounds, making online movies hard to hear. This booster tremendously helps w/the sounds.

love it, does exactly what I want, I would highly appreciate if the extension icon were white, since the current dark icon is near impossible to see when a dark theme is used.

GOOD JOB MATE! Highly recommended using Firefox on Lenovo T420, i7, 16gb ram, and 1tb Samsung e860 ssd

did the jop greatly

works great!! no issues so far using win7...