It provides better sound quality than an MP3 at the same bitrate.
As the album began to take shape, Dre knew that he wanted to make it available to his fans in the best possible quality. He worked with his team to ensure that the audio was mastered to perfection, and that it would be available in a range of formats, including a high-quality 320kbps AAC file. dr dre 2001 the chronic 320kbps aac free