I am trying it out right now. It has a very open, wide and deep sound stage. Instruments have thier own space and do not seem to loose it even in complex movements. Vocals are very clear and focused as well.
I have been using it in the hi gain mode to break it in. I will try it without high gain this weekend.
This weekend I will also put it against the AR PH7 and hopefully the Manley stealhead.
The Manley Stealhead seemed to have more pop in the lower end if my memory serves me, but we will see. The AR PH7 has a great sound stage as well so the weekend should be fun.