Works fine but I'd welcome if there was an option to limit the volume range to 0-100%. I don't need the extra boost and the range of the slider for 0-100 is quite small.

This extension does a great job. A particular highlight for me is that you can turn down the volume on videos. I often find that videos are much too loud when you start them. It's always very unpleasant for me when videos start too loudly, but that's finally come to an end.