at 70db my ears start to hurt, at 75 I've got about 10mins before I'm finished and 80+ db's is a little too much for me honestly. And any headphone that needs to be driven that loudly to achieve it's maximum output isn't something I'm going to be to thrilled to own. Thus far for my, for my listening levels, the LCD 2 Faz is a nice side grade from the HE 4, I've not listened to music that loud in a long time, becuase it hurts my ears
and to my ears, they don't "ruin" all vocals, some how ever don't sound entirely correct still these are my intial impressions I've got these till next monday so I'm gong to listen to them for well the next week the do a write up on how they compare
It might be worth getting your ears checked (I mean that in a friendly, not sarcastic way). It is absolutely fine to prefer lower listening levels, but if 70db actually HURTS your ears, then that would suggest there may be some problem (especially with a headphone like the LCD-2, which can go loudly in a graceful and refined manner). 70db is not a level one would normally associate with physical pain in a healthy ear.