The Kenwood KX-660 HX is a cassette deck that was released as part of Kenwood's lineup in the late 20th century. This model is recognized for its dual-capstan design, which contributes to improved tape transport stability and sound quality. It features a high-speed tape transport mechanism and offers a range of playback and recording options, such as Dolby B and C noise reduction systems, providing cleaner audio reproduction during playback and recording processes. The KX-660 HX is equipped with a direct drive motor, enhancing its durability and performance reliability. It is capable of handling both normal and metal tapes, making it versatile for various audio formats. A key feature is its ability to automatically calibrate the recording process based on the type of tape being used, ensuring optimal sound quality. The front panel typically includes various controls and indicators for playback, recording, and adjustment of levels, allowing for user-friendly operation.