I recently got an LCD-X for my own. When I first heard that LCD-X and XC is positioned between LCD-3 and LCD-2, I did not believe that LCD-X would be so superior to LCD-2, because those price of those two are merely different about 500$s. However, at the first listening of LCD-X in the shop, the sound was stunning!! Actually, I tried to listen to LCD-2 to buy. So I really didn't hope that LCD-X would better than LCD-2. But except the very low deep bass response, everything else is superior in LCD-X than LCD-2. In Korea, LCD-X was hard to get that time, I tried to get it through On-line shop of AUDEZE. Importers were established in Korea, I waited and get the one. I have very short and unstable experience with LCD-3 but I like the sound texture of LCD-X better than LCD-3. It could totally dependent on the individual tastes. I just now wonder that STAX SR-009 is better than LCD-X. Long time ago, SR-007 and their paired amplifier system did not satisfy my taste at all. So I actually doubt that SR-009 would better than LCD-X. If they are better, I wonder how SR-009 is better than LCD-X. If anyone can explain the differences, please answer me. : - )