I bet we could sell ultrasonic transducers to audiophiles at a fat profit. "Restoring the all important 48Khz to 500Khz band to your audio improves the listeni

I bet we could sell ultrasonic transducers to audiophiles at a fat profit. "Restoring the all important 48Khz to 500Khz band to your audio improves the listening experience, repels bats and mosquitoes, drives dogs mad, and will lengthen your lifespan by 100 years. Only $495"