Similar level. But definitely more "hi-fi" sounding. Actually, I'd say the X1s sound like hi-fi – like the sound you get when you listen to a pair of high-end, full size speakers (but not too large, say something with a tight 8" or a pair of 6.5" drivers at the bottom end) in a good listening room. Except you get that sound, both the speakers and the room, with direct headphone intimacy.
Edited by anodyne - 10/12/13 at 11:48pm