Crossword Genius

Is there such a boom in audio equipment? (5)

Ross

I believe the answer is:

sonic

I'm a little stuck... Click here to teach me more about this clue!

But I can't explain it at all! Could you help me understand?

(Other definitions for sonic that I've seen before include "seven hundred and forty three mph!" , "Kind of boom" , "Travelling at Mach One" , "Sort of boom" , "Boom of jet aircraft" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.