"From the outset, the MX4 just felt right; it is not a featherweight headphone by any stretch of the imagination, but its overall size, shape, and relatively low mass make it comfortable to wear for hours on end."

"Sonically, the LCD-MX4 comes across as ‘son of the LCD-4’ in many respects, in particular showing an energetic, and very revealing midrange that sounds positively luminous and that is highly reminiscent of the sound of Audeze’s top model."

Read more at http://www.hifiplus.com/articles/audeze-lcd-mx4-planar-magnetic-headphone/