I've always wondered if hunters take the risk to put some earplugs before taking a shot so I got some free Cabelas Catalogs and saw something called a SportEar. It looks like you can increase your hearing while hunting, and when a gunshot is fired your protected from loud noises.
Hears a link to that site I found:
http://www.cabelas.com/cabelas/en/te...801&hasJS=true
I think some actors with money and brains would buy $1500 products that basically look like hearing aids and up to a distance can't be seen by a camera. Hope this answered your question.
Every soldier in Iraq would probably want a pair of these.