Well, no metal in there so it’s just piped in over air tubes like the old-school airline headphones. The speaker is at the outside end of the tube and the user just gets to hear whatever comes down that little rubber tube. They also give you a rubber ball to squeeze if you need to “press the button”.

Interesting experience honestly, the headphones are definitely hearing protection and damn protective. I’m used to wearing hearpro and it was pretty damn loud. Operator told me it would sound like jackhammers but that’s not true. Voice from operator comes down the same pipe the music does, I had to actually parse what he said to me, it was like in a tunnel.