Filtered Plugs
This design replicates the natural response of the ear canal so that
the sound heard is the same quality as the original, just a bit quieter.
The differences in buttons are listed below. See
Non-Electronic Order
Form to purchase any of the following products.
 ER-9
The ER-9 has reduced diaphragm stiffness for less attenuation
(reduction).
 | Reduced attenuation (better audibility) then the ER-15 |
| For use when a small amount of protection is adequate |
| Good frequency response |
| 9dB attenuation through 2 kHz |
| Available colors - Beige or Brown |
| Style - compact |
Cost: $130.00/set includes a set of filters (made
from a polyurethane material) -
See Order Form
$185.00/set includes a set filters (made from a silicone material) -
See Order Form
($70/set for filters only) -
Buy Online
 ER-15
The ER-15 has a diaphragm which functions as an acoustical compliance,
as well as an acoustical mass. This results in a smooth and flat
attenuation (reduction).
| Practically perfect frequency response |
| Provides the same attenuation at all frequencies |
| Minimum occlusion effect with deeply-sealed custom earmolds |
| 15dB attenuation |
| Available colors - Beige or Brown |
Cost: $130.00/set includes a set of filters (made
from a polyurethane material) -
See Order Form
$185.00/set includes a set filters (made from a silicone material) -
See Order Form
($70/set for filters only) -
Buy Online
 ER-15SP
The ER-15SP (sports Plug) response is similar to the ER-15, but the 6kHz
side branch resonance (which smoothes the ER-15 response above 3kHz) was
sacrificed in order to provide the smallest possible size.
| Smaller then the ER-15 |
| 15dB attenuation |
| Used by athletes and others in high noise environments where
hearing signals and sounds are important |
| Available colors - Orange |
| Styles - compact |
Cost: $130.00/set includes a set of filters (made
from a polyurethane material) -
See Order Form
$185.00/set includes a set filters (made from a silicone material) -
See Order Form
($70/set for filters only)
Buy Online
 ER-25
The ER-25 has an increased diaphragm stiffness and an acoustical mass
channel molded into the button for more attenuation (reduction).
| Increased attenuation good frequency response |
| Used by drummers and others exposed to high sound levels |
| 25dB attenuation |
| Available colors - Beige or Brown |
| Styles - Original or Compact |
Cost: $130.00/set includes a set of filters (made
from a polyurethane material) -
See Order Form
$185.00/set includes a set filters (made from a silicone material) -
See Order Form
($70/set for filters only) -
Buy Online |
