Original: It supports 24-bit audio at sample rates of up to 192 kHz, and can handle WAV, AIFF, mp3, SDII audio files and QuickTime video files.
Simplified: The high-end version supports sample rates of up to 192 kHz and bit depths of 16 and 24 bit, opens WAV, AIFF, mp3, SDII audio files. It also supports QuickTime video files.