LOL,
I was on the USAF test team that developed the ANR technology for USAF Special Operations. I even have an original EMI protected headset that only weights about 3 lbs, and requires 3 9vdc batteries, and last almost 4 hours..... LOL It was a GREAT program I learned ALOT about our hearing and what can be done to protect yours. (too late for mine) I will be more than hapy to chat at CWI if you have questions. There are NUMEROUS systems on the market, and you really need to understand what noise you are trying to block/cover/reduce. Not all sets are designed with recip engines in mind. Price should not be the only factor.
