cascos bedeutet auf Englisch

headphone [headphones]▼(listening device)
noun
[UK: ˈhed.ˌfəʊn] [US: ˈhedˌfoʊn]Put on your headphones and listen to this. = Ponte los cascos y escucha esto.

headphones▼(pair of speakers worn over or in the ears so only the wearer can hear the sound)
noun
[UK: ˈhed.fəʊnz] [US: ˈhedˌfoʊnz]