What is the difference between SNR and NRR?Updated 9 months ago

These values are based on two standards measuring the same thing: sound attenuation provided by a hearing protection device. NRR complies with the US standard while SNR complies with the EU standard. SNR ratings are usually a little bit higher than the NRR ratings for the same product. This is just because of the different way of calculating, but it's important to note that they are representative of the same performance and functionality.