ghdprentice - Thanks for the insights. Very helpful, and exactly what I was looking for. Having owned the M900 for 2+ years, I find it a little more musical than your description, but I don't have anything like the AR to compare it to. I'll have the opportunity to hear both side by side in the next few weeks, but based on your description I'm really interested in the Ref 160s. Listening will tell.
