Audio and infrasonic transducers; planar magnetic transducers; loudspeakers; audio speakers; tweeters; ribbon tweeters; woofers; subwoofers; apparatus for transmission of sound; amplifiers; loudspeakers with built-in amplifiers; computer peripheral devices; remote controls for audio speakers; electrical inductors; electric wire and cable; structured semi-conductor wafers made of silicon; telecommunication drivers being parts of telecommunication equipment; audio headphone drivers being parts of headphones; compression drivers being parts of audio equipment; headphones; earphones; portable audio systems comprised of transducers, speakers, tweeters, woofers, subwoofers, apparatus for transmission of sound or amplifiers; wireless audio systems comprised of transducers, speakers, tweeters, woofers, subwoofers, apparatus for transmission of sound or amplifiers; wireless audio system, namely, apparatus for wireless transmission of acoustic information; wireless audio speakers; audio speakers for computers; sound bars; wireless loudspeakers; wireless audio equipment, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; public address (pa) systems and instruments; line array systems composed of loudspeakers, amplifiers and audio drivers; sound systems composed of remote controls, amplifiers, loudspeakers and components therefor; cabinets for audio equipment and loudspeakers; distribution system consisting of acoustic waveguides; horns for loudspeakers; electro-mechanical actuators; acoustic couplers; acoustic lenses for loudspeaker horns

Assembly of products for others; custom and contract manufacturing in the fields of audio equipment and apparatus, audio systems, sound systems, acoustic equipment, transducers, loudspeakers, telecommunication, audio and compression drivers, consumer electronics, cabinets for audio equipment, headphones and earphones; manufacturing services for others in the fields of audio equipment and apparatus, audio systems, sound systems, acoustic equipment, transducers, loudspeakers, telecommunication, audio and compression drivers, consumer electronics, cabinets for audio equipment, headphones and earphones; research in the field of manufacturing processes; technical support services, namely, providing technical advice related to the manufacture of audio equipment and apparatus, audio systems, sound systems, acoustic equipment, transducers, loudspeakers, telecommunication, audio and compression drivers, consumer electronics, cabinets for audio equipment, headphones and earphones; metal plating and laminating; soldering; welding; woodworking; electroplating