Ah, okay, I see. I personally hated the LCD-2 with O2. The bass was so thin. Felt so lacking. Surprisingly, the HE-500 was okay with them. The bass on LCD-2 through O2 vs. Emotiva was a night and day difference for me. I listen primarily to electronic music and it was disappointing. I have had the O2 for 8 months. I gave the combo about 2-3 weeks but it was flat out terrible with electronic music. Acoustic stuff was okay though, especially with O2's transparency. The Emotiva on the other hand was pumping out serious bass. The mids also improved.
I know theoretically it makes sense for the LCD-2 to work good with O2 especially if the HE-500 are a bit okay with it, but damn it sucked really bad. I really wanted it to work as I previously read positive reviews on it, but there was no hope even trying it out further. I took out the O2 after a few months to see if results changed...same result sadly.
You will rarely see me give out those night and day hyperboles, but the LCD-2 case with O2 and Emotiva, especially the bass section deserves one. IMO, of course
Haters coming in 3, 2, 1....