"Reps" or "Clones" refer to product imitations designed to copy a particular product (in this case, AirPods) as precisely as possible. This is distinct from a 'knockoff'.
Here's an example of how "Reps" or "Clones" can be used:
"Where can I get the best AirPods reps/clones?" In this context, "Reps" or "Clones" refers to replica AirPods.