+2... The LCD-2 is mid-recessed, despite what people say. Just because mids are clear doesn't mean that a headphone isn't mid-recessed.
Funny question. But yes, the short answer is like what lee730 stated --- there's no comparison. I've always found the Shure 535, regular or LTD-J, to sap resolution. It also doesn't have a very black background. The 334 is the opposite in that it has perhaps the blackest background (what I take as a clean impulse response and smooth frequency response) of any IEM I've heard. The LTD-J is actually peakier than the regular 535 because it has a stronger high pass filter, and a different damper value, so while it has more present highs, it isn't nearly as smooth. It's hard to get into more depth than this. I like the LTD-J, but it doesn't compete on the same level as the 334.
What about the its performance on faster-paced music? The LTDs sound bland and not as involving (perhaps too "slow" for the music, excuse my poor terminology) for some genres so I'm considering the 334s (heard they are a great all-rounder).
Edited by StereoHeadphone - 10/12/12 at 11:04am