Beats Audio Is one of the must have app that Improves your sound quality
You can hear the difference right away after you install beats audio And its Very easy
1) Download the Beats Audio installer from play store
2)Open it and Grant super user Permission
4)Do A backup of your Data in case if something happens
5)Finish installing it and Reboot it
Here's a youtube Tutorial
click t he image to buy beats audio head phone for excellent sound quality.