What are the differences between the two in sound quality? Yes it's obvious that planar magnetic cans have superior transient response. However, I ask this because I recently bought a planar magnetic headphone and want to know if the differences are attributes of the planar magnetic sound or the particular nature of my headphone. I feel that there is some kind of a "wall" of sound that makes things sound a bit distant, and I've read from two other people about the same thing. Side note: should striving for a flat headphone be our main goal here? How often do sound engineers actually use flat systems to record and master the music?