https://wccftech.com/airpods-pro-service-program-resolve-issues/

Are your AirPods Pro giving you those annoying crackling issues or are you experiencing problems with ANC or active noise cancellation? Apple has a solution for this, and although the company took its sweet time, it has launched an AirPods Pro service program that gives owners the opportunity to fix them. Unfortunately, the first and second-generation AirPods won’t be a part of the program as detailed in the company’s published text below.

“Apple has determined that a small percentage of AirPods Pro may experience sound issues. Affected units were manufactured before October 2020.