check this out on your he-4

can't believe how good this headphone is even on EF-5, sense of realism is just stunning, jaw dropping, make sure to have enough volume level to achieve amazing "be there" effect, out of this world super clean attack, low freq kick, transients speed, tonality and resolution - aspects where he-4 just shines ...
http://youtu.be/TjX9f1eExKQ?t=43m15s
http://www.youtube.com/watch?v=cIk-Kxw_7Kc&hd=1
http://www.youtube.com/watch?v=MyAy6hxGirg&hd=1
http://www.youtube.com/watch?v=ounSY8eijgM&hd=1
http://www.youtube.com/watch?v=ShxJIP56mL4&hd=1
http://www.youtube.com/watch?v=C9ugPXrY65k&feature=share&list=UUoE9537BkBHtOOrQAj6x_0w&hd=1
http://www.youtube.com/watch?v=ttF45s-Ikb8&feature=youtu.be&t=26m18s&hd=1
http://youtu.be/ttF45s-Ikb8?t=42m22s&hd=1
http://youtu.be/MtPQOTyFHXw?t=33m28s&hd=1 guitars sound just crazy in here on EF-5 as well as the freaking drums sections just like I would be there on the concert
http://youtu.be/l1toLihZkDs?t=2m35s&hd=1
http://youtu.be/pdxjhqA23gg?t=49s&hd=1
http://youtu.be/4jLaa6SqjiE?t=3m24s&hd=1
http://www.youtube.com/watch?v=D4cN1vc60sU&feature=youtu.be&t=54s&hd=1
http://youtu.be/ourvXtt1pQ0?t=23m41s&hd=1 you have to use more gain it has low recording level but superb dynamics and fidelity without any freaking compression to the sound, amazing performance in HD
these days I actually don't listen much to my CDs having such performances on youtube in HD with superb sound quality