Sorry to dissapoint you, but I don't think imaging will improve that much with the x3. The iphone is fairly decent once you bypass the amp (it is crap, really especially imaging).
Lol, accelerator, actually you have offended me with your source/cable talk, but apology accepted
Guess this tells about what I think of the whole topic, don't even wanna debate it
Just want to say one thing... If I wanted to and tried, I could perceive differences between cables as well, but I highly doubt I could pick out cables in ABX testing, so I won't even bother.