Here are two relics of past times länst. In the 80s Teac had with the open cassette tape on the Japanese market, in which the tapes could change. Unusable for everyday use, but a fantastic monument of cassette culture.

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TEAC O'Casse Open Cassette - Reinventing the Reel

And Kenwood there was this really crazy tape deck for the car. Since the generation FurzApp can not keep up… ;)

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Kenwood car cassette player KRC999 mark II