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ACS Pro 27

ACS Pro 27
ACS Pro 27
ACS Pro 27 Filters
ACS Pro - Neck Cord (Optional Extra)
ACS Pro - Grips (Optional Extra)
ACS Pro - Grips and Neck Cord (Optional Extras)
ACS Pro Zip Case
ACS Comfort Cream and Wax Pick
ACS Pro Colour Options
Exceptional attenuation in dangerously loud high frequency environments. Popular with sound engineers, event staff and seriously loud amplified musicians.
Sales price £124.20
Laser Etching

pro series logo 150

The PRO 27 is a breakthrough in high-noise filtering, giving you an almost flat reduction of around 23dB through the low and mid range frequencies so that you maintain situation awareness and your ability to communicate, but can still be comfortable in very loud environments. In the higher frequencies the PRO 27 gives you a stark jump in protection, offering up to 35dB where you need it most so you can carry on working or enjoying your passion in safety. With an average attenuation of 27dB the PRO 27 can increase your safe exposure time by up to 9 times.


The PRO filter series has been designed anew with the wearer in mind. For starters, it’s smaller than many competing filters, meaning that it can fit into smaller ears without any protrusion which is great for both comfort and aesthetics because it will always fit snugly underneath a helmet or other head wear. The filters are also removable so you can clean and maintain your ear moulds and your filters – giving you the maximum life and the best value for money from your plugs. In addition, the PRO series are water resistant so they can be used outside or in high moisture environments and can withstand perspiration without it damaging the filter membrane.


Trying to create a natural sounding earplug is no mean feat as far as your own voice is concerned because, as you may have experienced, when you block off your ear canal your own voice starts to boom inside your head (this is what we call occlusion). This is caused by sound that is carried to your ear canal through the cartilage at the side of your head which usually escapes through the open ear canal so is not heard. When we block off the canal this sound cannot escape and so creates that booming effect.

A large amount of occlusion can be eliminated by ensuring that the earplug sits deep enough into the ear canal to extend past the cartilage. This ensures that the sound hits the plug and is deadened rather than entering the canal at all. The PRO filters go one step further by being vented, which allows sound to pass both ways, meaning that remaining sound can escape directly through the filter providing one of the most natural sounding earplugs available.

NOTE: PRO 27 filters and ear moulds are not interchangeable with other filters and ear moulds in the PRO range.


The PRO 27 is custom-made using soft medical-grade silicone so you get the very best in isolation and fit allowing you to wear them for hours at a time without fatigue or discomfort. Each earpiece is manufactured to the highest standards ensuring you get a comfortable, discreet and effective hearing protector that can be fitted quickly, easily and securely every time.

Build Material : 40 Shore Silicon with SteriTouch
Mould Type : Canal Mould
Standard Colour : Clear

Conforms to EN352-2:2002

Items Included

  • Carry pouch
  • Wax pick
  • Comfort cream
  • Care and instruction leaflet

Optional Extras

  • Grips to aid removal
  • Cording
  • Colour (see chart)
  • Laser etching up to 10 characters


Download PRO Series care and usage instruction

Download PRO 27 specification sheet