The headphone for you, without a doubt, is the (in)famous AKG K701/K702/Q701. They have a very wide soundstage, along with great definition. But they really don't have much bass. You could say that this further elevates their analytical characteristics. Many people say that they sound completely sterile, which should be perfect! 
Oh, but you are going to need an amplifier for them. Does that count?
Edited by CaveManta - 2/25/12 at 7:07pm