Summary: ***Update from May 22, 2013*** I replaced these speakers with a pair of new Jamo C601 bookshelf speakers. What a difference! The C601's indeed were brand new while the C603's were not. I can confirm that the C603's were not only used but probably had not been broken in properly. The sound of the C601's is much better than the C603's. This is not to say the C603 is a bad speaker. Just be sure that if you buy used, that you are getting a pair that was properly broken in.