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The filter restricts sound pressure
(loudness) as it increases.

Say goodbye to uncomfortable ear muffs that not only get hot and sweaty but can also get in the way of prescription and protective eye wear.

Variable sound reduction is achieved using a non-liner filter inserted into the pre-drilled canal on your lab manufactured custom plugs.  This filter attenuates as sound pressure increases, which causes the filter to restrict sound pressure (loudness) as it increases instantaneously. No electronic components are required. The non-linear filter also reduces the occlusion effect (blocked ear sensation) and allows you to perceive a more open ear or natural effect whilst wearing plugs.
We supply “stoppers” with all Non Linear Filer plug orders – the stopper enables you to plug the hole for more noise reduction when a continuous reduction is desired.

  • Attenuation (sound reduction): up to Class 4 28-30dB(A) to a Class 5
  • Life Span: Approx 5 years (differs for each individual)
  • Turnaround: Approximately 2-4 weeks.

APPLICATION:      Industrial Impact Noise   Shooting

Total Cost:  $275.00 AUD  inc GST

Available in any colour or colour combinations. Your initials are embedded into each ear (Blue on left Red on right side). Attaching cord available (at no cost).
Included in price: left and right custom plugs with non-linear filters embedded, Small NG case, instruction leaflet, ear oil, alcohol swabs, generic stoppers and postage within Australia.

*an impression (of your ears) is required. Please note we do not charge for the impression service, the only additional charge you will incur for this is if impressions have to be outsourced when client is out of area.