very good , looked around for something like this because my jriver volume is louder than youtube and i wanted to make them sound the same , and with this i have done it. i have set it to +20db and it matches the jriver volume output now

Stop and restarting, and moving seekbar causes multiple volume boost.
That's not how it suppose to be.

nice tool but has problem with activation, sometimes stays inactive and there is no obvious way to turn it on. Just simple button on/off would be more comfortable.

Does not work except for muting left audio channel, giving lopsided audio effect both on external speakers and headphones. Complete waste of time. I'm running Gentoo.

This is great! Youtube sounds way better now! It works better than the recommended Youtube Audio add-on. Thanks and Cheers!

Makes zero change to audio
checked permissions, reinstalled a few times..
tripple checked all my audio settings.
Could be a problem with Linux, i'm on KDE Neon and maybe something with the firefox linux version could be different?
if you wanna test, i'm down.

Nice. Works perfect! Thumbs up. :)

It does what it says and works good so far.
A redesing to dark modus would be fine...