Aural Tech sound enhancers are small devices inserted into the inner ear, designed to increase the volume of sounds via artificial amplification, and special “cleaning” algorithms that can clean up background sound. These are useful in situations where hearing properly is important. They are designed to work on human ears, though variation N-k is designed with Nekos in mind.
Inserting is a surgical procedure that would need to rupture the eardrum and could damage regular hearing. The inner ear is a sensitive place!