The Sony TC-U5 is a discontinued model of cassette deck that was part of Sony's early lineup of Hi-Fi audio equipment. Released in the late 1980s, the TC-U5 offered advanced features for its time, such as Dolby B & C noise reduction systems, a high-output quartz oscillator, and chromium-vanadium evaporated heads for improved sound quality. It also featured an on-screen display for easier operation and programming. The Sony TC-U5 is now considered a collector's item among audiophiles and vintage electronics enthusiasts.