I am new to this forum and to the high-end headphone arena. This is my first ever review and based only on my first afternoon of playing and listening. OK, these are brand new, and maybe they will break in, but will they break in that much? They appear to be beautifully made, almost jewel-like out of the box. If they hold up and retain this apparent quality with long use, I would have to judge them finely made. So far, I have only used them with my Yamaha P150 Electronic Piano, as I have no headphone amp yet. I don't know how fair a test this...