The HTC Droid DNA comes built in Beats audio to enhance overall audio experience. Folks at xda have modified it a bit and this modded version allows you to choose from 17 different preset options. To run it, you need to be rooted, but its modder prefers you to be on ViperDNA ROM.
Instructions on how to get the mod working – Download from here; put it on external storage; reboot into recovery; flash and reboot.