Open Music player
. Select Now playing > Options > Equaliser.
Five frequencies are preset in your device: Bass booster, Classical, Jazz, Pop, and Rock, but none of them are selected as default.
Select Options and from the following:
With the equaliser graphic setting, you can adjust frequencies during music playback and modify the way your music sounds.
The available options may vary.
To delete a frequency preset, scroll to it, and press C. You can only delete frequency presets you have created yourself.