I saw Gareth Emery play a few weeks ago, and I could swear that my ears still have damage. Whoever works the board clearly wasn't paying attention to half of the people clutching their ears in agony in the back, present company included. The system must be 90% tweeters - the treble was like a circular saw at a construction site.

Other than that, it was actually great. I just took it as a cue to spend more time on the dance floor; the front speakers weren't that bad.