> Nobody wants to use them; they are heavy, uncomfortable, have poor performance, need an amp to drive, and use huge old school connectors. Are you thinking of

> Nobody wants to use them; they are heavy, uncomfortable, have poor performance, need an amp to drive, and use huge old school connectors. Are you thinking of Stax electrostatic headphones? That describes them, but they can sound amazing and people definitely still use them. 60s headphones used the same jacks we have now, but they don't last forever and the plastics then weren't as comfortable as the ones now.