06-13-14: Dfontalbert
Simply to be unobtrusive - add and detract nothing.
Well that is a very common philosophy, but really means nothing in reality. Since no one can compare the sound of any cable directly to the sound of no cable at all, one can only say what the cable sounds like attached to a certain piece of equipment. Whether the sound is favorable or unfavorable could be due to the cable or the piece of equipment.
Certain cables will sound better with certain pieces of equipment, but that is more of an electrical match than it is a statement of a certain cables ability to be "unobtrusive".