Audio amplifiers; Audio equipment for vehicles, namely, loud speakers for automotive audio systems; Audio speakers for automobiles; Audio transmitter units; Bass speakers; Cabinets for loudspeakers; Digital signal processors; Digital sound processors; Electric and electronic effects units for musical instruments; Equalizers being audio apparatus; Loudspeakers; Loudspeakers with built in amplifiers; Power amplifiers; Signal processors for audio speakers; Sound transmitting apparatus; Subwoofer...