Audio enhancement - better sound quality with iDFX iDFX is an innovative patent pending technology that dramatically improves the sound quality of all your current MP3 and AAC song files. It's the culmination of over a decade of cutting edge audio research and development. The result is simply spectacular sound quality for your music files. Hear Higher Quality Audio On Your iPhone, iPod, and iPad iDFX enhances music for your iPhone, iPod, iPad, iTunes For the first time iPhone, iPod, and iPad users can listen to music with the full fidelity and quality that existed in the original CD recordings. iDFX enhanced music files can also be transferred to other portable devices, such as Android, Windows Phone, Zune, SanDisk, Creative, and Archos.