[ Cabinets for loudspeakers; Loudspeakers; ] Audio and Video Receivers; [Megaphones; Microphones; ] Sound transmitting apparatus; [ Horns for loudspeakers; Acoustic couplers; Headphones; ] Portable media players; [Insert earphones; Transponders; ] Transmitters of electronic signals [ ; Radios; Hands free kits for phones; Network communication equipment, namely, computer network hubs, computer network interface devices, and communications headsets for use with communication ]