eagle ears
A person with hearing so good it's like they have a microphone in their head and a speaker in their mouth.
My sister said she could hear the car outside. She didn't hear me knocking on the door.
My brother said he could hear the music from the next room. He didn't notice the phone was ringing.
My mom said she could hear the baby crying from the other end of the house. She didn't hear me yelling at her.