Here's a new headphone I purchased, which has incredibly good sound, and an unusual Balanced Armature device in with the driver.
http://www.hifiheadphones.co.uk/forum/headphone-reviews/3976-final-audio-design-pandora-vi-stereo-headphone-balanced-armature-feature.html
http://www.hifiheadphones.co.uk/forum/headphone-reviews/3976-final-audio-design-pandora-vi-stereo-headphone-balanced-armature-feature.html