asmongold brought me here

no effect

Exactly what i was looking for, balance audio either left or right channel for each tab. Works great.

THIS is the best if you need to AMPLIFY your volume above 100% !

Doesn't work at all for me 😥

works perfectly for my needs, without those suspicious permissions required for all the other volume control addons

Good idea but doesn't work on most tabs. Even after refreshing the page, the add-on doesn't apply to the page.

Worked sometimes but has given up the ghost and virtually mutes the sound now.

didn't work whatsoever. changing volume would permanently mute whatever I was trying to adjust.

Great to boost the volume of individual tabs

It is stupid that you can't set a default volume and amplification! Every single time I have to manually adjust it! Why?

Doesn't work at all

Most of the times works fine (sometimes it has no effect in the audio), I only use it to amplify volume in youtube.