Somewhere up in the post it was mentioned that audio is not a contact sport.  

Anyone who has attended the hornfest knows that it can be.   My forehead still has a bit of bannana pulp shrapnel.  This was caused by a rather uninhibited controller of the volume.  The snap crackle and pop of a rather well worn in pressing of dreamboat annie was to be the catalyst in this horrific scene.  One deep groove too many and WHAM!! I still have the dent in my forehead, a reminder of just how brutal audio can be.