Update --
So I auditioned the Arros for quite a while. They are leaner sounding than my Rev. 60i's, but they have enough low end to get by.
And, true to what everyone says, they image very well. The soundstage is incredibly deep and they really do disapper, BUT (and it's a Sir-Mix-a-Lot sized but) they are BRIGHT. The upper treble range is loud, harsh and etched, to the extent that it dominates anything else in the recording and makes music sound like a collection of parts rather than a whole.
I've tried a variety of set-ups to see what happens, but the outcome is always the same -- Audiolab 8000s, B&K PT-3 and B&K St2140, Trends 10.1, and a Yaqin/Grant Fidelity Tube Buffer in every mix and match combo one can think of.
I've tried switching cables and even hauled the arros to my buddy's place to listen with his Sonic Frontiers Line 1/Bryston 4bst combo.
In the end he and I concluded that we liked what the arros did, just not the sound with which they did it.
I'm ready to give the arros back now. I'm going to miss the depth, but not the harsh treble. Did I miss something (short of trying something like a Jolida, Unison or PrimaLuna)?
What do they sound like before they get broken in? Could this be the issue?