Two thumps up for the REF6 - I had a well broken-in 5SE in my system - only thing I changed was placing in the 6 to demo from my dealer. New out of the box and upon initial listening I was pleasantly surprised of what it was doing in my system both stage wise and sonically speaking - kinda shocking because I haven't experienced this from any other new out of the box ARC product and I have owned numerous pces over the years- always took some time to hear this or that.
It's now well broken-in - very nice pce indeed!!!!!!!!!!!!