Bass speakers; Copper wire, insulated; Digital signal processors; Downloadable software in the nature of a mobile application for use for acoustic control; Electric cables; Electric wires; Electrical wires; Electronic cables; Extension cables; High-frequency switching power supplies; Induction voltage regulators; Insulated copper electrical wire; Loud speakers; Loudspeakers with built in amplifiers; Mineral insulated electric cables; Musical instrument amplifiers; Portable vibration speakers; Portable video cameras with built-in videocassette recorders; Remote controls for stereos; Resistance wires; Sound amplifiers; Threaded cable connectors of metal; Voltage regulators; Voltage regulators for electric power; Winding wires