Did a couple of A/B with the standard power supply(SPS) and the MCRU Power Supply. I listened to 6 songs with one power supply and the same 6 with the other. I did this twice and this is what I noticed. The tracks consist of 2 pop, 2 pop vocal and 2 dance. Not the best test music. But this is the type of music I listen to most, thus most familiar with.
I turned the V200 headphone amp volume to max without any music playing and could not notice any noise with either power supply. So noise is not an issue with either of these power supplies. Now on to the sound. There is more clarity in the overall presentation with the MCRU. As a result, I could hear more detail and better separation. Micro Detail? The biggest thing I noticed with the MCRU was the treble and how smooth the upper range was. Female vocals sounded really good with the MCRU. Each breath taken and certain notes seemed more pronounced. Bass seem a touch tighter but this was much less noticeable.
The hardware setup is as following: Apple loss-less CD rips > J River Media Center > ASIO > ASUS Xonar Essence ST > M-DAC > Violectric V200 > HD800.
The above hardware should be sufficient to show any differences between the 2 power supplies.
Sorry I don't have a similar or more expensive DAC to compare it to.
Edited by hduong - 12/20/12 at 7:44pm