This is my First Review so go easy on me. Drivers for Mac OS X 10.11 is good.   OK Here we go, I have this device for about one month, it is growing on me and really like to inform other Head-Fi of this underrated device. If you have other music players you are SOL on taking advantage of the native DSD playback function. For example if you have Audirvana or iTunes you can only play back in PCM mode and that is not the strength of this device. Don't get me wrong the sound is still good maybe be even great thanks to the balanced output...