Requires perseus kernel 34. 2 or above. Requires root access. This app is now open sourced and is available at: Disclaimer: I am not responsible for any damage this app may cause. This app allows the user to handily change Headphone Amplifier Levels. Root access is required for file permission changes to the following files: "/sys/class/misc/wolfson_control/headphone_left".
Get the .apk file of Headphone Amp Control 1.5 for free and take a look at users' reviews on Droid Informer. The setup package takes up 233 KB of disk space and it works flawlessly on Android 4.1 and above. The app has been scanned for viruses and it has been found totally safe. Mario Andhika is the creator of this application that is related to the Music & Audio category.
The most recent update of the tool was launched on Nov 11, 2013 and Headphone Amp Control was downloaded by over 50K users. On Google Play, the app has been rated 3.1 by its users.