On a sunny day (Mon, 22 Jan 2007 21:59:54 +1100) it happened "Phil Allison" wrote in :
Ok, I could give a funny answer here, but if they really want to put that many dB into a 'person' (just to stay politically neurtal), that could indeed perhaps lead to hearing damage. In my life I was only once in a dancing where I had to leave because of sound pressure, and my ears were ringing for hours afterwards. That amp was designed by a friend of mine, he wanted me to hear it :-)
I would not want to expose others for long durations to something like that, but DOD might find it interesting.
So it would be better if the OP told us about what he is up to, to be able to find if I can, or actually would be, prepared to help in the design of it. OTOH a LM386 on a bad quality (low efficiency) opne headphone does not do much..... You need to know the whole setup really.