Just three words: Couldn't be better!😎👍

棒

Worked while others didn't

only this one worked for me, others are just a garbage

Fácil de usar

totally worth it use freelly without doubting us

Love this Add-on works as advertised.

aucune amélioration constaté

suppi

You know an add-on is good when you don't click "no" when it asks for a rating. Simple and does exactly as it advertises. If you need a volume booster, just get this one.

This is the best sound booster that you can find on the Internet. Thanks for making this service available to users of the Firefox Browser.