不見得喔！
剛剛看了NEWEGG的REVIEWS，有人說了：
to let you all no. i called logitech and talked to there tech guys and they said that they have a newer version of the z-5500. the only thing that was different is that the wires are not hard wired. they are red and black clips on the back of the sub and speaker allowing u to add ur own higher quilty speaker wire for ur desiered length and quility.

所以很可能有可以換線的新版本。