Apparatus for transmission of sound; Headset virtual reality device, namely, virtual reality headsets; headsets for use with computers; Voice transmission apparatus for use with personal headsets; Wireless headsets for smart phones

Audio speakers; audio equalizer apparatus; Speaker boxes, namely, audio speaker enclosures; Sound couplers, namely, acoustic coupling devices; Audio and video receivers; Earphones; Stereo tuners; Audio amplifiers; Electronic switchers for audio signals; CD players; MP3 players; MP4 players; Audio dubbing apparatus; Car audio equipment, namely, audio speakers for automobiles