The Kenwood KX-W 4010 is a double cassette tape deck manufactured between 1989 and 1990. This device features a sleek black design and compact dimensions of 440 mm in width, 127 mm in height, and 268 mm in depth, weighing approximately 4.1 kg. It is equipped with dual cassette drives and incorporates Dolby B and C noise reduction technologies, which help enhance audio clarity and reduce background noise during playback and recording. The deck offers smooth control buttons that are mechanically linked, ensuring user-friendly operation. It includes features such as automatic tape sort adjustment and a quick copy function, making it convenient for users to duplicate tapes efficiently. Additionally, it supports timer capabilities for both recording and playback, allowing users to schedule audio recordings without manual intervention. The KX-W 4010 also includes a headphone output for private listening, alongside recording level and channel balance controls. Technically, it boasts a frequency response range of 30Hz to 16kHz for CrO2 bands and 30Hz to 18kHz for pure iron bands. The device has a noise floor rated at 72dB when using Dolby C and 64 dB with Dolby B, ensuring a cleaner sound performance. This model is part of a series that includes other similar cassette decks such as the KX-W 6010 and KX-W 8010.