"non invasive ultrasound" pfft. Wire your piercings to your audio amplifier and crank up the volume on something boomy. "1812 overture" is good. I do like the

"non invasive ultrasound" pfft. Wire your piercings to your audio amplifier and crank up the volume on something boomy. "1812 overture" is good. I do like the notion of beefed up water cooled headphones that can sink a few thousand watts. turn it up to "liquefy" and queue up all of Motorhead.