The Sony TC-WR 820 is a dual cassette deck that is designed for recording and playback of standard audio cassettes. With its dual decks, it allows for efficient tape to tape copying, which makes it a practical tool for users looking to clone tapes or create mixtapes. The TC-WR 820 features a variety of playback options, including normal, chrome, and metal tape types, accommodating a range of cassette formulations. Key specifications include automatic tape detection, the ability to adjust bias and equalization, and a built-in Dolby B and C noise reduction system to enhance audio quality and reduce background noise during playback. Additionally, it offers features such as song search, auto-reverse playback, and an LED display for easy monitoring of the current tape position. The deck is designed with user-friendly controls, and its overall build quality aims at providing reliability and longevity in performance. Many users appreciate the unit's sound quality and the convenience it brings to cassette handling and duplication tasks.