I bought a used pair of Audience AU24 SX that are only about a foot long for a headphone setup. I was very impressed by them. So much so that for my Livingroom speaker setup I am thinking of saving the cash and get the AU24 SX over the Audience FrontRow.
I have Audience FrontRow on my office speaker setup, and I love them but the AU24 SX is also very good. Maybe not as clear as the FrontRow, but that is really nitpicking, and the price difference is rather large.