They are not fixing anything other than phase differences introduced by the cables themsleves - that's how the manufacturer decides how much adjusting to put into the boxes. At least that's what the marketing hype says. I have heard legend that the cables sound better if you cut the boxes off, but I don't know who has actually had the chutzpah to cut up a set of very expensive cables for this purpose. Elizabeth - are you saying that you actually heard this done, with an identical pair of cables? What cables were they?
I do know that systems I have heard with MIT cables sound anything but smeared.
I do know that systems I have heard with MIT cables sound anything but smeared.