Carol discovers that the package is an old cassette deck player with earphones. Nakamichi was the first to use a three-head recording technique in a cassette deck. Unfortunately, disaster seems to strike as her music tape goes haywire in the cassette deck. It is credited with offering the world's first three-head cassette deck. Some combination systems include a basic turntable, a CD player, a cassette deck. Other Nakamichi cassette decks are the Cassette Deck 1 and the Cassette Deck 1 Limited. Some cassette deck manufacturers even produced decks with a self-demagnetize button. An integrated cassette deck was optional with the stereo package. Also offered was a third less costly deck the 700ZXE auto tuning cassette deck. The Aquarius branded cassette deck came with the appropriate cable. The first Auto Reverse Cassette Deck came from DUAL in Germany in 1974 . A cassette deck is a type of tape machine for playing and recording audio cassettes. Throughout the 1980s, high fidelity magazines called Dragon the best cassette deck ever tested. In Japan the first cassette deck with Dolby C was the AD-FF5 from Aiwa.