Surround sound not ultrasound, stupid autocorrect. Not god to skull.
I was at the beach, others heard it, at the bluff, others heard it, in my room, at the meditation center, walking down the street, in my hammock in the back yard too many times to count.
Got the multi layers of high pitched sound most of the time.
The sound they make is surround, from every point around me. You'd have to experience it to know what I'm talking about. But once you hear it you can't forget it.
Perfect perfect sound.