We’re committed to delivering music as the artists and sound engineers intend it to be heard. Housed here are the information and tools necessary to create the highest-quality masters for iTunes. Learn more by reading the Mastered for iTunes technology brief.
To hear how music will sound after it’s encoded, so you can make important creative choices during the mastering process, download these tools. The Mastered for iTunes droplet is a simple, standalone
drag-and-drop tool that automates the creation of iTunes Plus format masters, allowing for a preview of songs using the same world-class technology used to encode the entire catalog for the iTunes Library.
Apple’s free digital audio mixing application, AU Lab, can be used as a host application for Audio Unit effects, including AURoundTripAAC Audio Unit, one of the new Mastered for iTunes tools. If you don’t already have Logic or another Audio Unit host application, download AU Lab to get started with auditioning your audio, detecting peaks and clipping, and performing double-blind listening tests.