Electric audio and visual apparatus and instruments; audiovisual receivers; personal stereos; audio and video receivers; audio tape recorders; CD players; record players; Mpeg audio layer-3 (MP3) players; MP4 players; DVDs; DVD players; video disk players; portable media players; tape and videotape players; sound amplifiers; sound mixers with integrated amplifiers; amplifiers; apparatus for voice recording and replaying; apparatus for transmitting and reproducing sound or images; sound and vi...