I'm not sure if you can hear it but I find 192kbps MP3 to be audibly terrible. The Mojo won't magically transform trash to treasure so to speak. It's exceedingly revealing and as they say 'garbage in, garbage out'. Same with poor masters... especially with poor masters. That said, well recorded music with decent file compression (my minimum threshold is 256kbps AAC) will simply shine with the Mojo.