I have a 20dB dropoff in the midrange. I've always loved headphones but I never turned them up loud. I went to a lot of concerts in the 1960s, when they'd bring 200-watt guitar amps and mike the drums, just to play club gigs. Then in the 1970s they kept upping the volume in arena concerts until it was that loud all the way in the back row. We thought just sticking wadded-up napkins in our ears would help, but it didn't. Somewhere along the way I learned to use real earplugs. It's too late to reverse what's already happened, but concerts are still that loud (and some club gigs are insane) so at least it won't get any worse. A good rule of thumb: If you feel slightly deaf after a concert or your ears are ringing, it was much too loud. Wear earplugs next time. Many bar bands play way too loud. Sit in the back and put in earplugs when you're dancing. (Many of the performers do!) And if somebody else can hear YOUR headphones, it is WAY too loud. They're your ears, so do what you want. But if you like music you'll be really pissed off if you lose your hearing, or if you've got tinnitis so loud that it interferes with everything else. They say that tinnitis acts as your own personal blood pressure gauge. If your pressure goes up, the ringing gets louder and/or changes tone.