There are several synonyms for the term "audio-cassette recorder". One of the most common is simply "cassette recorder". This device is also sometimes referred to as a "tape recorder" or "tape deck", as it plays and records audio onto magnetic tape. Another synonym is "cassette player", which is often used to describe a device that only plays pre-recorded cassettes, rather than recording new audio. In more technical circles, "analog tape recorder" may be used to differentiate these devices from digital recording equipment. While largely replaced by digital media, vintage cassette recorders remain popular among collectors and music enthusiasts.