As I said before, the full review of O2 + Emotiva with HE-500 and LCD-2 will come later. Although without going into much details, I don't recommend the LCD-2 with O2 as I can with the HE-500. The HE-500 pairs better with the O2 than the LCD-2 does. The vocals on both are very transparent, but a little bit more forward on the LCD-2. The vocals on both of these cans are absolutely natural - take your pick. The HE-500 kills the LCD-2 on treble....it's not even close IMO. The LCD-2 doesn't seem to have the full extension on O2 as the HE-500 does. More bass quantity with HE-500 as well as texture. Although the LCD-2 sounds more aggressive and has more of that bass kick (good for electronic). For electronic music through O2, either headphone can work, although I would probably take the HE-500.
I'll get the balanced cable to run the LCD-2 off the Emotiva and report back. I already have the female XLR to banana plugs adapter....this is what I'll plug the new balanced cable into. My adapter is silver wire from when I got it done for HE-500.
Does anybody have any experience with silver wires and LCD-2. I might go for a silver balanced cable for LCD-2 or I can just stick with Audeze's balanced cable for $80