What is E.A.R. Technology?

i was looking at headphones and i saw it in the key features for this http://www.sennheiserusa.com/dynamic-stereo-headphones-audiophile_005341 i try googling it but im not really finding much, i would like to know what it is, wat it stands for, wat it does, how it effects the headphones, etc. ur help is... show more i was looking at headphones and i saw it in the key features for this
http://www.sennheiserusa.com/dynamic-stereo-headphones-audiophile_005341

i try googling it but im not really finding much, i would like to know what it is, wat it stands for, wat it does, how it effects the headphones, etc.
ur help is greatly appreciated
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