There are styles of headphones that are like an ear plug (to reduce noise by say 20db) that have a small tube running to the driver that is a long distance away

There are styles of headphones that are like an ear plug (to reduce noise by say 20db) that have a small tube running to the driver that is a long distance away. They’re these clear tubes with a coil you see on security guards and what not. The actual driver is somewhere else. This could also be used. I think some in ear monitors are like to too.