Computer mouse pads; Acceleration sensors; Accelerometers; Access control and alarm monitoring systems; AC/DC power supplies; Acoustic amplifiers; Acoustic amplifiers for mobile devices; Aerial combiners; Ammeters; Amplifiers; Amplifiers for bass guitars; Amplifiers for musical instruments; Amplifiers for wireless communications; Anemometers; Apparatus for recording, transmission, processing, and reproduction of sounds; Audio amplifiers; Audio headphones; Audio-video receivers; Audiovisual re...