|Cassettes are manufactured with
types of magnetic tape.
||The difference between these types of tape lies
mostly in the composition of the magnetic particles
that coat the tape allowing storage and retrieval of the signal.
||Some types of magnetic material allow a higher
bias setting on the cassette deck with the advantage
of being able to record a hotter signal to tape, thus improving the quality
of the result. Most cassette decks have provisions for setting bias, usually
a switch between low and high bias.