CONCLUSION:

While there are minor variances among the HD800s, the HD800 have the most consistent measurement results to date of any headphone. This is despite the variances in the Sennheiser provided graphs, which were probably performed by disgruntled Euro youth (the type who also moonlight as rebel-without-a-clue protesters at G8 Summits) who simply slapped the HD800s on the dummy measurement heads without regard for precise alignment (yes, precise alignment is necessary to get repeatable and consistent results.)

The hair cells in your inner ear which respond to 6k may have been destroyed by other headphones or occupational hazards.

Oh no. The only thing I've been doing for the last 17 years was sit infront of the desk studying. (21 years old) And the only can I've owned for a long period of time is LCD2. 

Let's certainly hope that doesn't happen. I don't find snares hurt at all, they just sound... normal. The only thing that hurts my ears really bad is the beginning part of Sexy Back - Justin Timberlake. Yes I listen to pop; young fella here forgive me.