ALSA

ALSA or the Advanced Linux Sound Architecture provides audio support for Linux. It is a replacement for the old OSS linux sound system. The Alsa-utils package contains both the Alsamixer and Amixer utilities.

You can control the audio properties of your sound cards through:

• Alsamixer-The graphical interface for ALSA
• Amixer-The command based utility for ALSA

CLI Utilities

Alsamixer

ncurses based utility with visual representation of various levels.

alsamixer

Amider

Command line, operation performed per command.

amixer -c [card-number] set [control] [value]

To see what controls you can manage

amixer scontrols

If you are sudo there are more controls available

sudo amixer scontrols