Core Audio Format (CAF)
Apple's modern audio container — no 4 GB limit, many codecs, and popular with Logic Pro.
Pro Audio Converter can convert audio files to and from Core Audio Format (.caf).
The Core Audio Format is a container for storing audio, developed by Apple Inc. CAF is designed to overcome limitations of older digital audio formats, including AIFF and WAV. Just like the QuickTime .mov container, a .caf container can hold many different audio formats, metadata tracks, and more. Not limited to a 4 GB file size like older digital audio formats, a single CAF file can theoretically save hundreds of years of recorded audio thanks to its use of 64-bit file offsets. Logic Pro uses the CAF format extensively for its loop and sound-effects library, particularly for surround-sound audio compressed with the Apple Lossless codec.
Pro Audio Converter offers the following audio formats for storage in a CAF container: