Amplifiers; Earphones; Headphones; Microchips; Microphones; Audio equipment for vehicles, namely, loud speakers for automotive audio systems; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Cabinets for loudspeakers; Digital to analogue converters; Downloadable software to control and improve audio equipment sound quality; Electronic chips for the manufacture of integrated circuits; Equalisers being audio apparatus; Integrated ...