Help Center
Go to tetrahearing.com
Contact us
Product Questions
Pre-Purchase
Hearing Questions
Product Questions
Post-Purchase
Return Process
Back to home
Help Center
Product Questions
Pre-Purchase
Hearing Questions
Product Questions
Post-Purchase
Return Process
What is the NRR for AlphaShields?
The NRR (noise reduction rating) for our AlphaShields is 20-21 dB depending on tip selection.
