I too have a Music Stream that I use with my Mac Mini. I upgraded from the iRoc which I still own. When I first got the Music Stream DAC, I noticed a subtle improvement in many areas incluing dynamics and soundstage. Now that the Music Stream has fully settled in the difference is more impressive as the soundstage has broadened and I'm hearing nuances in songs that I've never heard before even after hearing the same song hundreds of times.
The iRoc is still a damn good USB DAC and unmatched at its price level as I've owned or listened to USB DACs costing 2 - 3 times the price and the Ultra Fi USB DACs are the most musical value that I've experienced.
I also use all Ridge Street Audio cables for IC, power and speakers. I can't say enough god things about how the Ridge Street cables improved my system.
The iRoc is still a damn good USB DAC and unmatched at its price level as I've owned or listened to USB DACs costing 2 - 3 times the price and the Ultra Fi USB DACs are the most musical value that I've experienced.
I also use all Ridge Street Audio cables for IC, power and speakers. I can't say enough god things about how the Ridge Street cables improved my system.