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Part# 11-07369
MFR Model# PA-4000


Designed to reduce aircraft engine noise for airport ground support crews as well as aircraft maintenance and technical personnel, the NoiseBuster Active Noise Reduction (ANR) Safety Earmuff combines an ANSI-rated 26NRR passive earmuff with active noise reduction electronics that deliver up to an additional 20 db of low-frequency noise attenuation.

Powered by a AA battery, the earmuff is resistant to water, moisture, contaminants, mechanical shock, and vibration. Perfect for users who do not mechanical shock, and vibration. Perfect for users who do not require two-way communications capability but who can benefit from protection.

  • NoiseBuster ANR Safety Earmuff
  • One AA battery
  • 3.5 mm audio interface cable
  • Warranty - 6 months
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  • On/off switch and power indicator
  • Stereo input 3.5 mm audio jack
  • Up to 65 hours of use on a single AA battery
  • Adjustable, comfort-fit headband
  • Resistant to water and moisture, contaminants,
  • mechanical shock and vibration


  • Storage temperature: -40C to +85C
  • Operating temperature: 0C to +55C
  • Audio cable length: 50cm (20 inches)
  • Power: One AA battery
  • Passive noise cancellation, 26 NRR, CSA Class A, SLC(80), 29.2 Class 5
  • ANR performance up to 20dB in 20Hz to 800Hz


Isolate outside noise well. Well built.

Thomas R
May 21, 2020

Best protection against speech, which is so difficult to drown out. I live with a friend who has Alzheimer and his 24/7 moans have me on the edge of insanity. These earmuff have really helped save the day - though they are a bit pinchy tight, I couldnt do without them!!

Katherine P
April 16, 2020

Great so far

Julie R
December 30, 2019

Very Impressed with the quick shipping. Well packaged,ready for use right out of the box. Awesome performance, looking forward to being able to purchase the accessories like new ear pads on the Canadian website sometime.

March 9, 2019

Great headset, it really does knock out the noise. Then their is the additional 20db circuit, shut the door, goodnight .. Best headset for the money hands down.

October 7, 2018

Excellent headset for working the outside operations for a major airline. They are comfortable and durable. The noise reduction works well and the speakers work perfect. Itâs exactly what I thought I was paying for.

August 28, 2017

These are very comfortable, and work well. I was on a project working next to a 7000 cubic inch engine wearing 30db ear muffs that were uncomfortable, and gave me a headache. I ordered these, and had them delivered the next day. These were a huge improvement. I had everyone on the project try them out. Everyone wanted a pair. Money well spent.

March 7, 2013


Q: Are these returnable?

Yes, if returned within 30 days of receipt in unused, resalable condition.

Q: Do these have blue tooth capability or ability to hear cell phone or soft music while providing hearing protection?

No, they do not.

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