- These plugs come with one set of filters.
- Filters are made by Etymotic and come in -9/-15/-25 dB options
- Filters are interchangeable-you can have all options for different listening environments
- Solid plug is also available
- Extra Filters purchased at the time of the order $50 per set
- Extra Filters purchased after the order has been placed $75 per set
- Solid plug $10 per set