Amplifiers; audio- and video-receivers; audio cables; audio headphones; audio interfaces; audio mixers; audio speakers; battery chargers; blank compact discs; cabinets for loudspeakers; cables, electric; cassette players; compact disc players; compact discs featuring recorded audio and video; computer hardware and recorded software for short-range transmission of digital voice and data that supports point-to-point and multipoint applications; digital audio players; DVD players; ear pads for headphones; electric transformers; game headphones; hands-free kits for phones; headphones; interfaces and peripheral devices for computers; loudspeakers; loudspeakers, headphones, microphones and CD players; megaphones; microphones; music headphones; noise cancelling headphones; personal headphones for sound transmitting apparatuses; personal headphones for use with sound transmitting systems; radios; record players; recorded computer operating programs; recording and playing devices for sound and image carriers; reducers; remote control for audio apparatus and electronic systems; sound recording apparatus; sound reproduction apparatus; sound transmitting apparatus; stereo headphones; subwoofers; telephone answering apparatus; telephone apparatus and receivers; telephone wires; video recorders; wires, electric