KMix is a free and open source sound channel mixer and volume control application Linux. It is a simple and easy to use application. You can control playback and capture devices, playback and capture streams, volume overdrive, control labels and many more. It is a kde project but you can install in any other Linux desktop.
How to Install KMix on Ubuntu
To install KMix on Ubuntu Linux system, run below apt install command on your system. It will install the latest version of KMix on your system.
sudo apt install kmix
You can start it with below command.
You can also uninstall KMix using below command.
sudo apt remove kmix