The signal's source is now back in the vinyl disk mode and the cattle tape (and it turns out even the micro cassette signal has a better quality than the digital source). The source of the signal, for example, the magnetic head of the vinyl disk player or the head of the magnetophone, needs an adjusting force, further, an equator or a liner mechant, a powerful forcer and, finally, acoustic columns (multiple or same-sexuals), intertwined with one powerful forcer or multiple-poweredlow frequency, medium bandwidth and high frequency specimen.
Less demanding sound amateurs turn to digital sources of sound signals, i.e. laser discs, MP3, WAV, MIDI.
Each radio tractor is produced by several firms and all firms show similar reproduced frequency bands, similar levels of non-linear distortions in advertising. It would seem that, as long as all elements had similar parameters, the element produced by one firm could be replaced by the relevant element of the interpretation produced by another firm?