Hmm, interesting. I wonder if it's because they fit in the ear, rather than sitting outside like more traditional headphones. This would allow them to cancel

Hmm, interesting. I wonder if it's because they fit in the ear, rather than sitting outside like more traditional headphones. This would allow them to cancel noise at higher frequencies since the driver-to-eardrum distance is smaller. Have you used other, more traditional can-type NC headphones? Can you compare?