Well, I took your advice...
After spending considerable time with the 560s and perhaps 20 hours with the LCD-X, I agree with nearly everything you said above. Your impressions were remarkably accurate to my experience. There are only two spots where I slightly disagree.
- I have a hard time telling any difference between the two headphones on bass extension. They both seem to go down to 20hz (and perhaps beyond) with exceptional linearity. The LCD-X feels weightier in the sub-bass and bass (perhaps due to the larger driver pushing more air), but is just as fast and resolving. I also find that I like the iFi bass boost with the 560, but not with the LCD-X.
- The X sounds a bit warmer to me, but I don't think the 560 has the edge on speed of decay. To my ears, I am able to pick out more resolution and separation from the X, especially on more complicated passages. Moreover, when I EQ to subjectively match bass amounts, the X seems just as fast as the 560s to me. I don't know how scientific that is, but there you go.
Two places where I couldn't agree more:
- "The Mids on the LCD -X are far superior than the HE-560" Mid-range on the LCD-X is phenomenal and, differences in tuning aside, the 560 doesn't even come close to the detail and richness of the those mids.
- "when you listen to music on LCD - X it honestly sounds like your are listening to extremely well placed speakers (without the room acoustic issues) - in this regard LCD - X is miles ahead on the HE 560" Yep. It does project an eerie sense of being surrounded by music, more so than the LCD-2F even. It's difficult to describe, but it's a magical thing.
Anyway, thanks again for the advice! Having both is absolutely the way to go, but anyone who hasn't should buy a 560 before they are gone. The 560 excels at treble and is probably better than the LCD-2F from a technical standpoint. It shouldn't be missed.