Headphones; Loudspeakers; Megaphones; Microphones; Subwoofers; Audio-receivers and video-receivers; Cabinets for loudspeakers; Compact disc players; Electric and electronic effects units for musical instruments; Equalizers being audio apparatus; Horns for loudspeakers; Personal stereos; Portable media players; Recorded computer operating software; Sound recording apparatus; Sound reproduction apparatus; Sound transmitting apparatus; Tape recorders; Wireless indoor and outdoor speakers; Wirele...