Briefly, in accordance with one or more embodiments, a headphone device, comprises at least one ear muff comprising a structure to hold the at least one ear muff against an ear of a user, and at least one driver disposed in the at least one ear muff. An earbud comprises an earbud housing having a protrusion to fit into an external acoustic meatus or ear canal of a user, and a driver disposed in the earbud housing. The driver comprises an electrostatic acoustic transducer comprising a substrate comprising a first material to function as a first electrode, a dielectric layer coupled with the first material, wherein the dielectric layer has one or more cavities formed therein, and a membrane coupled with the dielectric layer to cover the one or more cavities and to function as a second electrode.