How good are these for working around jet noise on an airport?

I have used these in a machine shop screaming through materials at 140dB. The noise level was very comfortable with these on. I could listen to instrumental jazz and still get things done. Perhaps you can relate that to jets.

Can you determine the direction of the "uncanceled" audio coming in from the microphones? (I'm NOT asking about the aux input.)

I can tell the direction of the source from which non-canceled noises are emanating when I am wearing the headset. I wear them on a Ford 8000 which has the muffler exhaust right up in front of you. Very Loud, without the headset on, but very nice with the headset. After about 4 hours of constant use, the headset does tend to feel like it is tight on your head. I am glad I purchased them. I used to just use the foam ear plugs, but that was not enough noise dampening. I hope this answered your question.

Would this muff work with impulsive noise?

What is impulsive noise? This is by far the best noise cancelling device around. I use it exclusively with all my power tools especially with my back back blower which is very very liud

No, it will not work with hardhats

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Electronic Noise Canceling Safety Earmuffs

Product ID: 65140476

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🎧3.5mm Audio Interface

💧Water & Shock Resistant

🔇20dB Active Noise Reduction

Description

🔕 Silence the noise, amplify your focus.

BUILT TO ENDURE - Engineered to resist water, moisture, contaminants, shocks, and vibrations—ready for any environment.
USER FRIENDLY POWER - Simple on/off switch with power indicator ensures effortless control and battery management.
NEXT LEVEL NOISE CONTROL - Combines 26 NRR passive and 20dB active noise cancellation for unmatched hearing protection.
CERTIFIED SAFETY ASSURANCE - CE approved and CSA Class A certified for professional-grade hearing protection you can trust.
SEAMLESS AUDIO INTEGRATION - Plug in your device with the universal 3.5mm audio jack and stay connected while protected.

The Noisebuster Electronic Noise Canceling Safety Earmuffs deliver industry-leading hearing protection by combining 26 NRR passive noise reduction with up to 20dB active noise cancellation across 20Hz to 800Hz. Featuring a 3.5mm audio interface for device connectivity, water and shock resistance, and CE certification, these lightweight, battery-powered earmuffs are designed for professionals demanding durable, reliable, and smart hearing safety.

Specifications

Manufacturer	NoiseBuster
Part Number	PA4000
Product Dimensions	17.6 x 4 x 10.6 cm; 9 g
Item model number	PA4000
Colour	Black With Yellow Earcup Bands
Style	Portable
Material	Plastic
Power Source	Battery-Powered
Item Package Quantity	1
Certification	CE Certification
Batteries included?	No
Batteries Required?	Yes
Battery description	AA
Item Weight	9 g

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