Earplugs for conerts?

If I'm not mistaken Headphones.com has some. They are similar to the inserts for the etyomatic earphones. They are plugs that allow a portion of sound, and supposedly even attenuation over the band width, but the narrow cavity reduces the sound pressure to the ear canal. These were designed for sound engineers on the road that need to hear, but don't want to damage or be exposed to the loud live levels of a concert.

Piezo brings up an interesting point. Did you know the sound pressure at the end (12 inches away) of a trombone is 120 db? How do you think the guy in front of the trombone player in a symphony feels (what--couldn't hear you--or anything else in the orchestra for that matter with this trombone in my ear). It's kind of amazing because most people don't think about those kinds of sound pressures from non-amplified instruments.