I don't know to be honest. I'm going to have to say yes but maybe it's a placebo effect.

Alright, so my friend sent me a link linking to a screamer, and I had my volume up at 100%... the ******* thing was too loud. But now I am afraid I may have broken my headphones. I have Superlux HD 681's. Is there anyway to test to make sure that I didn't blow them out? Thanks