Best Music App For the iPhone

For anyone who considers themselves even a moderate audiophile, this app is a must have. External DACs and headphone amps will set you back hundreds of dollars for a difference in audio quality that is less quantifiable than this three dollar app. I havent enjoyed listening to headphones this much since my first decent pair of headphones. That being said, this app is designed for decent headphones: my Ath-m50s and my AKG K550s, being good headphones that can be sufficiently powered by the iPhone, noticed the most significant improvement. The app also works well as a software counterpart to a good headphone amp for higher impedance headphones. The layout is beautiful and intuitive; the eq is brilliant and absolutely usable; the crossfeed does actually work to complete the center portion of the soundscape; it integrates with the iPhones native music controls; the capacity to play FLAC is awesome - what else could you want? I cant recommend this app enough - just buy it and see for yourself! Best three bucks you will ever spend.

Ezra Elliott about CanOpener — for Headphones, v1.1