ipEQ for iPhone

Cydia crack's | ipa crack's | jailbreak has posted a new item, 'ipEQ for iPhone'

World’s first Music.app equalizer. Fully integrates into iOS’ native Music.app
Cydia Updates – via planet-iphones.com

You may view the latest post at
http://www.ihackstore.net/2013/05/07/ipeq-for-iphone/