It has been a great help with listening to videos that have really low volume. Works really well. A big Thank you for making this :)

Thank you!! YouTube is always too quiet without this addon...

1. The tool is extremely straightforward and simple to use.
2. It does exactly as it said, just pump the volume boost as much as you need and those videos you really want to watch without headphones but are low on volume, suddenly become loud enough that you can double task or w.e it is you were planning that required a boost.

The volume boost itself works well. My two issues are that it can need re-setting for each new video (the number stops representing the actual volume after the first video), and that the hotkey to bring it up cannot be rebound. I have something else set to shift+ctrl+v.

Used for Lenovo Y520 with low volume issues. This app work well. Thank you.

brilliant addition to firefox

Does what it says and does it well. However, one does need to have the audio playing in order to change the volume. It would be better if one could change it wasn't playing.

Definitely boosts volume on my cheap sound bar. Best I have seen yet. Thanks Guys