Amplifiers; Microphones; Abdominal belts containing built-in speakers for purposes of transmitting music/sounds/educational material to a fetus and built-in pockets in which to carry audio transmitters; Accumulators; Acoustic couplers; Audio electronic components, namely, surround sound systems; Audio equalizer apparatus; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Audio headphones; Audio mixers; Audio speaker enclosures; A...