The Denon DCD-690 is a compact disc player that was manufactured by Denon. It is a part of their DCD series of CD players and was released in the late 1990s. The DCD-690 features a single disc tray and includes various playback controls such as play, pause, stop, skip, and repeat. It supports playback of audio CDs and has both digital and analog audio outputs. The CD player has a sleek design with a black finish and a minimalistic front panel display. It is designed to deliver high-quality audio performance and is suitable for use in home audio setups.