iPhone Equalization for all music player type apps

[HankHowdy]

There is a equalizer for the music app, this I know, but a tweak that allows equalization for all music player type apps would be awesome. Like spotify and pandora.

I know android has this ability.

Has this been done before?

 

[HankHowdy]

Still haven't found anything.

 

[HankHowdy]

Or is there a tweak to equalize sound on the pandora app?