I bought both JRiver and Audirvana. Audirvana is easier to use than JRiver but JRiver gives you many, many options. I Also use a MacBook Pro which is more difficult to work with those files as they have to be streamed as DOP which is another curveball. I stream to my McIntosh MA8900 via USB2 audio. It works very well for DSD 128 and higher bitrate PCM (384k). Could I possibly tell the difference between the two formats? Probably not. What I have learned is that the recording itself as well as the type of music really are the determining factor in HiRes audio.