The Sansui D-X 301i is a vintage cassette deck produced by Sansui Corporation in the 1980s. It is a high-quality cassette player with advanced features for its time, including Dolby B and C noise reduction systems, auto tape type selection, tape calibration, and bias fine tuning. The D-X 301i has a sleek and minimalist design, with a sturdy build and excellent sound quality. It was highly regarded by audiophiles and enthusiasts during its time.