Instruments for receiving, recording, transmission, processing and playback of analog and digital video signals and analog and digital audio signals and data, namely compact disc players, compact disc recorders, digital video players, digital video recorders, video recorders, compact cassette players, compact cassette recorders, hard disc readers, hard disc recorders, compact disc changers, digital video disc changers; loudspeakers, active loudspeakers, flat loudspeakers, subwoofers, stereo a...