The Denon DR-170 is a cassette tape deck that was produced by Denon, a Japanese electronics company. It was manufactured in the 1990s and was designed for home audio use. The DR-170 offered features such as auto-reverse playback, Dolby noise reduction, and adjustable tape bias. It had multiple connectivity options including RCA inputs and outputs. The cassette deck had a sturdy build quality and was known for its reliable performance.