Pro 9 Noise Cancelling Hearing Protection Exclusive, Patented Breakthrough Effective Noise Cancelling technology without Batteries, Electronics, valves, or any moving parts! Unique patented sound chamber technology, directs damaging sounds away from the ear canal, where they are dampened, refracted and cancelled. The effect is amazingly clear low level sounds such as speech, but with highly efficient protection from damaging noise levels such as gunfire with over 32 Decibels of noise reduction, evenly across all frequencies.
Independent test results:
Napier Pro9 – the big surprise of the test. Having seen the magazine adverts and then picked them up, I thought there was no way they were going to work effectively. They just felt too delicate. I couldn’t have been more wrong – for all shooting, bar perhaps heavy range shooting, I can strongly recommend these. Amazing value for money and much more user friendly than either disposable plugs or passive muffs.
TO SEE THE ORIGINAL TEST RESULTS GO TO: http://www.shootforum.com/forum/ShootForum_hearing_protection_test.pdf