
A piece of audio equipment is any device designed principally to reproduce, record or process sound. This includes microphones, radio receivers, AV receivers, CD players, tape recorders, amplifiers, mixing consoles, effects units, and loudspeakers. ...
Found on
http://en.wikipedia.org/wiki/Audio_equipment

It is important NOT to try to tune the radio or change CD whilst driving as this will affect your concentration. DO NOT listen to loud music or use headphones of any kind, as these can mask other sounds.
Found on
https://www.encyclo.co.uk/local/22336
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