Acoustic membranes; Amplifiers; Audio interfaces; Audio- and video-receivers; Cabinets for loudspeakers; Devices for wireless radio transmission; DVD players; Earphones; Electric batteries; Electric and electronic effects units for musical instruments; Electrical pickups for use with musical instruments; Equalizers being audio apparatus; Headphones; Horns for loudspeakers; Locks, electric; Loudspeakers; Megaphones; Microphones; Portable media players; Receivers for microphones; Record players...