Apple has explained why the new second-generation AirPods Pro silicone eartips are officially incompatible with the original AirPods Pro.
In an updated support document, Apple said that the original AirPods Pro eartips have “noticeably tighter mesh” than the second-generation eartips.
The ear tips have been designed specifically for different generations of AirPods Pro to provide the highest sound quality. Use the ear tips that come with your AirPods Pro. The AirPods Pro (1st generation) eartips have a noticeably denser mesh than the AirPods Pro (2nd generation) eartips.
Despite the differences in mesh, the second-generation earbuds physically fit the original AirPods Pro. The second generation ear tips are available in the new XS variant, while the original ear tips are only available in small, medium and large sizes.