This addin is really good, although it has several slight defects.
It should be the first priority to add a localstorage for saving configs that you have adjusted.

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Works as advertised.

Its exactly what it says and works perfectly !

very awesome for videos too loud or too quiet and I couldn't notice a quality drop unlike most boosted volume apps/add-ons! Very nice.

The only sound booster add on that works perfectly.