I am running Kubuntu 20.04, but had this issue also with Manjaro and all other Distro’s or DE’s I used:
I often have to increase the volume of my bluetooth earbuds over 100%, lets say 130%. This is NOT possible with any defineable keyboard shortcut. Neither with the explicit Volume keys on my keyboard, nor with a user defined one in lets say KDE’s settings.
The increasing stops at 100% Volume.
I can use for example the pulseaudio GUI:
With this I CAN “overtune” it. But not with any shortcut or 3rd party shortcut tool that I know of.
Do you have any idea how to do this with shortcuts?
Kind regards for your help.