Apparatus for electronic recording of sound; Audio electronic instruments; Electronic apparatus for home use with audiovisual playbacks; Electronic apparatus for interfacing video apparatus; Electronic baby monitoring (listening) devices; Electronic musical recording apparatus; Electronic noise cancellation apparatus; Control boxes for headphones; Covers for headphones; Ear pads for headphones; Headphone amplifiers; Headphone consoles; Headphone-microphone combinations; Headphones; Headphones for microphones; Stereo headphones; Plug adaptors for headphones; Stereo headphones for personal entertainment use; Stereophonic apparatus incorporating headphones for personal use; Stereophonic headphones; Two-way plugs for headphones; Earphones (other than hearing aids for the deaf); Earphones for radios; Earphones for recording apparatus; Audio electronic apparatus; Electronic audio apparatus; Electronic audio effects apparatus; Headphones for audio apparatus; Audio apparatus; Car audio apparatus; Headgear adapted to secure audio electronic apparatus to the head; Music centres (audio apparatus)