Bilsom 303S vs Hearos Xtreme Protection Series - Comparison


The Hearos Xtreme Protection Series is a stronger earplug than the Bilsom 303S. Please have a look at the decibel comparison chart below. More decibel means stronger sound protection.

The individual reviews of each earplug are available here:
Bilsom 303S

Hearos Xtreme Protection Series


Bilsom 303SHearos Xtreme Protection Series
Brand:Howard LeightHearos


Bilsom 303S
Bilsom 303S picture of packagingBilsom 303S picture ear wearing , side view

Hearos Xtreme Protection Series
Hearos Xtreme Protection Series picture of packagingHearos Xtreme Protection Series picture

Attenuation (US Standard)

Attenuation according to measurment standard ANSI S3.19-1974

More decibel (dB) means more sound protection. More hertz (Hz) means a higher pitch sound.

Bilsom 303S vs Hearos Xtreme Protection Series attenuation decibel (db) comparison chart (graph)

Overall rating
Bilsom 303SHearos Xtreme Protection SeriesDifference
Attenuation by frequency
Bilsom 303S: dB34.4035.0036.2035.9036.4038.9039.8042.6043.00
Hearos Xtreme Protection Series: dB38.4040.3043.2041.8038.6045.0045.7049.6047.30
Difference: dB-4.00-5.30-7.00-5.90-2.20-6.10-5.90-7.00-4.30
Bilsom 303S: SD3.404.203.803.002.903.
Hearos Xtreme Protection Series: SD4.804.805.004.002.603.303.304.003.50
Difference: SD-1.40-0.60-1.20-1.000.30-0.30-
Bilsom 303S: dB less SD31.0030.8032.4032.9033.5035.9036.6038.4038.90
Hearos Xtreme Protection Series: dB less SD33.6035.5038.2037.8036.0041.7042.4045.6043.80
Difference: dB less SD-2.60-4.70-5.80-4.90-2.50-5.80-5.80-7.20-4.90

Source Bilsom 303S: Instruction Manual - Bilsom 303 (global). Retrieved from on 2016-08-01
Source Hearos Xtreme Protection Series: DAP World, Inc.. Packaging information. A picture of the packaging information is available here.