terrific for concerts
Very good frequency range, decently flat attenuation.  Very effective; allows you to hear things/people close to you easily while simultaneously attenuating the really loud stuff.  I can now enjoy live concerts again.  The fit takes a little getting used to, since all ears are different, but the fit also adapts well over time (after 5-10 min) and then I can leave them in comfortably for extended periods.
Rating: 5 stars