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

Couldn't find anywhere to suggest, but can you adjust/add the ability to alter "step" other than 10? I like having more control to be able to go by steps of 1 (or even .1) if possible. Thank you!

Work very well. some times is anoying that when a new video/episode i got to move the slider to get it to work again.

I would give this a 4.5. The only thing I would add is the ability to set it and forget it for a website. Most of the videos I've seen on youtube are too low of volume.

Not sure if its just me but keeps resetting to 100% from 600% every time page refreshes. Not sure if there is a way to prevent this.

it works and is simple