electronic audio equipment, namely, speakers, speaker selectors, speaker switches, transmitters, receivers, repeaters, processors, sensors, amplifiers, volume controls, plates, stereo boxes, speaker cables, intercoms, paging systems comprising a receiver and amplifier, jacks, impedance matching systems comprising an attenuator and electrical terminal connectors, and impedance measuring instruments, namely, electronic impedance meters

electronic audio equipment, namely, speakers, speaker selectors, speaker switches, transmitters, receivers, repeaters, processors, sensors, amplifiers, volume controls, plates, stereo boxes, speaker cables, intercoms, paging systems comprising a receiver and amplifier, jacks, impedance matching systems comprising an attenuator and electrical terminal connectors, and impedance measuring instruments, namely, electronic impedance meters