By default the volume is set to 100%. You can adjust the volume while in standby by holding the AUX button for for 1 LED Flash. The volume will change from 100% -> 75% -> 50% -> 25% -> Mute. If you would like to lower the max volume all the time you can adjust this in the configuration file. Open the file config.ini in a text editor and change the line that says 'volume=100' to a lower number this will change the max volume of the saber.