Works as advertised. Would love if there was a way to set the default volume to 600%, rather than having to set it each time.

Excellent, thank you very much Aliaksandr!

works very well, it actually boosts sound

this is just what I need to hear lots of videos online. thank you.

nice

Perfect!! It works flawlessly.

Свою задачу выполняет. Поставил, чтобы увеличить звук на ютубе. Простое управление.

An excellent audio control using Firefox while on a Mac computer.

I can finally blast DnB home alone.