Amplifiers for wireless communications; Bone conduction earphones; 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; Distribution amplifiers for audio and video signals; Earphones and headphones; Electrical signal attenuators; Matrix switchers for audio and video signals; Power amplifiers; Signal s...