I didn't want to shell out the $695 for a program which I had no idea whether or not it would improve the sound of my mac and to what extent, and would require me to convert all my music myself.
As with many of the other Mac audio software solution it's possible to try the software for a period of time for free so no need to pay to try. To date I've tried Amarra, Pure Music, Decibel, Audrivana and Fidelia. I currently use Pure Music with a range of AIFF, FLAC and WAV source files.
I've found there can be a noticeable difference in presentation style between software products and different settings within the same software so it's worth comparing if the Mac platform allows. Similarly other modification to OSx and hardware features can have a noticeable impact on the audio presentation.
I use a dedicated audio optimised Mac Mini with Pure Music software running in memory and integer mode via an async USB-SPDIF bridge to M DSP's.
Avii