The JVC TD-W107 is a double cassette deck that features twin tape mechanisms allowing for seamless tape dubbing, recording, and playback. It includes standard features such as Dolby B noise reduction, which reduces hissing sounds in tape playback, and a high-speed dubbing function, making it easier to copy cassettes faster than normal play speed. The unit also typically offers options such as continuous play across both decks and individual output level controls for each deck.