Audio Concert is a free Android application developed by hario, falling under the category of Multimedia with a focus on Music & Radio. As the name suggests, it is a headset/earphone/Bluetooth audio volume manager that can set the sound volume of the system.

The app automatically detects and adjusts the sound volume when you connect your headset, earphone, or Bluetooth device. Audio Concert offers several audio-related convenience functions such as automatic volume control, headset etiquette mode, silent media mode, modify the system volume, use incoming call volume for notifications, play the alarm in silent mode, and turn on the screen when connecting the headset.

Audio Concert supports Bluetooth Headset (HFP, HSP, A2DP, AVRCP) and remembers the volume of each status and adjusts it automatically. When connecting the headset, it switches to vibrate or the desired ringer mode automatically. The app mutes the media volume if the ringer mode changes to silent or vibrate mode in normal state, and it modifies the total system volume. Note that for normal operation, the service must be executed, and be careful not to kill the service by Advanced Task Killer or Task Manager. The Screen On feature may not work on some devices.