AC/DC converters; AC/DC power supplies; Amplifiers; Audio frequency amplifiers; Batteries and battery chargers; Battery packs; Chargers for batteries; Consumer electronic products, namely, audio amplifiers, audio speakers, audio receivers, electrical audio and speaker cables and connectors, audio decoders, video decoders, speakers, power conversion devices, power converters, and power inverters; Direct current converters; Low-voltage power supplies; Panel meters, namely, an electronic instrum...