It's listener break-in. I've done A/B comparisons on identical speaker models before, with one pair being new, out-of-the-box and the other pair being 1, 2 or more years old, with no discernible difference in sound.
I dont think I've ever heard someone say that the speakers they bought used, do the same thing. In other words, their new-to-them used speakers sound quite different than the speakers they have been using, but they just get used to the sound after a few days/weeks. The speakers were used, so if there was "break-in" associated with them, it would have happened long ago.
I dont think I've ever heard someone say that the speakers they bought used, do the same thing. In other words, their new-to-them used speakers sound quite different than the speakers they have been using, but they just get used to the sound after a few days/weeks. The speakers were used, so if there was "break-in" associated with them, it would have happened long ago.