Earphones; Adapter cables for headphones; Apparatus for transmitting and reproducing sound or images; Audio-receivers and video-receivers; Audio cables; Computer apparatus, namely, a converter that superimposes an Ethernet signal on an existing cable; 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 inverter...