I cannot explain why but honestly run one through your car CD player after its spun a few hundred discs in a pretty harsh environment, especially if you smoke, or drive windows down and you may find it playing with less skipping and tracking errors.
That's about only difference I ever noticed with mine,can't say as made any change I could tell in the house units.
That's about only difference I ever noticed with mine,can't say as made any change I could tell in the house units.