NLNH
Member of Trade: Shozy, Cozoy
I've tried a few cables, with substantially little to no difference in sound. I've Tried the FiiO e10 which sounded pretty darn the same as the iPhone 4, and everything else I've heard sounds a little bit different than everything else. The only thing I've heard that made anything sound substantially different was the Palaios wooden amp.
I wouldn't say with much if any certainty about many of these things sounding "better" than the others though.