35 of 39 people found the following review helpful
These earplugs are good for the casual clubber or part time musician, but if like me you are in environments higher than 100db on a weekly basis, then you need stronger earplugs. The SNR rating of these is 12db, but they can offer up to 20db at certain frequencies depending on fit and correct usage. I used to use these all the time, but unfortunately I sustained serious hearing impairment and have had to upgrade to custom moulded plugs. My damage happened whilst wearing the ER-20. Do not be complacent if you are around loud sound regularly. Shell out for the professional earplugs......its worth it.