Great Concept _ but BAD creation.
1) anything above 100 % - there is a slight hum the background.

2) it doesn't "stay assigned" - Everytime i open firefox, I need to re-assign it to the level I need. .. ALL of the other extensions ... stay the way I set them - like my ad-blocker I do not "need to" ... 'turn it on' ... for every use.
I turn it on, set it & forget about it ...

this one I constantly need to "re-assign the level I had set the last time I had the browser open"

3) ( all of your keyboard shortcuts are already assigned by YOUTUBE, # keys refer to the chapter you want to watch, Arrow keys ALREADY assigned to control "move page up or down on page" , Right & Left arrows ( ALREADY assigned to move forward or Backward in video by ) 5 seconds.

4) STOP the constant need to ask questions !
( upon every use ) .. do you want to use this ad free - or pay for a premium to remove ads.

Yes - I am fine with banner ads.

Why the constant NEED to ask - if I already told you the answer.

if the extension app asks any more (stupid questions )... a questions I have already answered multiple times previously ) _ i will change my rating to a 0 star.

Not work on open.spotify. Unknown .js script in code.

I advise Firefox users not to install this poorly written extension.

The "details" section lists 4 feature bullet points and several quotes from positive user reviews. There are no instructions there, or anywhere. If the developer had spent 5 minutes browsing other extensions, he'd know that the details section is for instructions.

There is no settings page. Normally, an extension offers, if nothing else, alternative hotkeys in case, like me, a user is already using the extension's default hotkey.

Using this extension to switch to the tab with sound doesn't work if the tab is in a different Firefox window, making this feature more or less useless.

After trying the extension on several web sites that play sound, I find the extension is sometimes capable of increasing the volume but sometimes has no effect.

Tried to rate it to get 600% and still goes back to 100 EVERY time

Doesn't work for all sites.

Works but the problem is that it won't remember settings! Why do I have to keep boosting audio? Fix this problem!

after i used it for a while after a few days it apparently doesn't work anymore for google meet. very infuriating.

Works for Youtube. Apparently does not work with open.spotify.com which is what I needed it for. Am I missing something?

It is working great, but I am not able to use it when I am manipulating the playback speed of video in YouTube, so if you are like me who often manipulates the playback speed then this extension is not for you, or else I would request the devs to see into this and resolve this bug or whatever issue it is in the upcoming update, apart from this the extension is seemless and no issues faced as of now.

Recent Update seems to have broken the ability to watch a lot of videos.

works well. but it doesnt let you play videos on different playback speed (even you are not using the extension). Uninstalled.

Unfortunately it disables the option to change video speed which makes it unusable for me.

If it's fixed I'll change it to 5 stars.

Works, but can't watch videos in double speed while the addon is running.

Doesn't work on sites like Bandcamp and Soundcloud

Normally this works perfectly fine but I'm running into a problem at the moment.. it isn't working for a YouTube video. No idea why!

When it works, amazing ad on but when it doesn't it's just super frustrating.

When active, YouTube video's speed doesn't work.

This add-on worked once and has since stopped working.

It doesn't work reliably for me, which is disappointing because it looks like it does for everyone else =( In sites like Twitter and WhatsApp, which don't constantly play sound but do sometimes, I have to set the volume back to 100% and then up to whatever level I want whenever I haven't played a sound in a while. This is without closing the tab or navigating away, and with the icon still showing the higher volume :(

when you increase volume your video speed will set back to 1x.

Doesn't work with Facebook videos

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Addon is broken on many sites due to CORS violation, e.g. on Bandcamp site.