Audio amplifiers; Audio and visual headsets for use in playing video games; Audio circuit boards; Audio electronic components, namely, surround sound systems; Audio equipment for vehicles, namely, loud speakers for automotive audio systems; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Audio headphones; Audio receivers; Audio speakers; Audio speakers for automobiles; Semiconductors; Semiconductor chip sets; Semiconductor chip sets for use in piezo MEMS speakers and valves; Semiconductor chips; Semiconductor devices; Semiconductors; Speaker microphones; Valve amplifiers; Automated valves for smartphones, consumer audio devices, namely, headphones, earbuds, and hearing aid devices; Automatic valves; 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; Control valves for regulating the flow of gases and liquids; Electric audio playback units; Electric valve actuators; Electric audio playback units with lights and speakers; Electronic semi-conductors; Electronic valves for controlling gas or fluids; Electronic components in the nature of piezo MEMS speakers and valves; Electronic products for the manipulation of the frequency, time, and amplitude characteristics of audio signals, namely, audio processors; Pressure relief valves for consumer audio devices, namely, headphones, earbuds, and hearing aid devices; Signal processors for audio speakers
Electrical and Scientific Apparatus