Logitech acquired Ultimate Ears awhile back to take advantage of its experience with professional audio, and now it's leveraged some of that institutional knowledge to create a UE line of headphones aimed at consumers. First up, there's the $100 UE 4000 on-ear model that comes in three colors: black, blue and magenta, plus a detachable cord with an in-line mic and audio controls compatible with iOS devices. The UE 6000 model takes things up a notch with an over-ear design that
