Your ears are instruments themselves.
Scoring 8-9 means you detected tone differences of 2-3Hz. That is INSANE. Most humans can't hear differences that small. You either have years of musical training, natural perfect pitch, or ears that belong in a laboratory being studied. You can probably identify notes by name, tell when a song is played in a different key, and it physically pains you when something is out of tune. Your ears are not just good — they're exceptional. The world sounds different to you than it does to everyone else.
Get your read — free on iPhoneyou hear every note like it has a name. which means every out-of-tune moment in life is slightly louder for you than everyone else.