I am really happy with the sound quality of the RE Zero.  The bass is much improved over the RE 0, but still maintains the clarity and distortion- free quality that the RE 0 has.  Everything else about the sound quality is the same if not better.  The build quality is very solid, and the gunmetal finish is very good looking.  These headphones are great for a variety of genres, and I listen to everything from Alternative to Classical music.  Meany headphones have trouble portraying the complexity of large scale orchestral pieces, but the RE- Zeros...