Ironically, I own AD700s and don't find the soundstage anything spectacular. I'll test it more heavily tomorrow and with proper amplification. I find them to be very open and airy sounding, but other than that I wouldn't say their soundstage is that great. My Sony MDR-1R have awesome spacing but terrible imaging and no airiness. Both of these headphones have angled drivers. The AD700's are bigger and less angled than the Sony if that matters.
7/24/15 at 11:23pm