I got this extension because one side of my headphones were quieter than the other side and this fixed the problem. I wish that there was a way that I can keep the setting for every tab so I don't have to keep on adding it but it might come in a later update
Easily adjust various sound settings (volume, balance, etc
) via toolbar popup
Sound Adjustment is a lite extension that lets you easily adjust few sound settings from the toolbar popup
Currently, there are three options to adjust: volume, balance, and amplify
All these settings are stored for the current tab only
Once you change tabs, settings are reset to defaults
The volume setting is from 0 to 100 units
Balance variable changes from (-100%) to (+100%), where -100% is the left speaker only and (+100%) is the right one
Any value between these numbers divides the sound output between speakers proportionally
The last setting is for the amplify option, where it amplifies the output sound from 100% to 500%
100 is the original level and 500 makes the output sound five times louder than the normal settings
Furthermore, three buttons are at the bottom-right corner of the popup
From left to right, are the reload (to reload the active tab), support, and donation buttons
Note: this add-on only works for HTML5 audio and video elements
Moreover, currently, the add-on does not work for media elements embedded in frames
If you have a feature request or found a bug to report, please fill the bug report form on the add-on's homepage