The Akai GX-600DB is a professional reel-to-reel tape recorder that was released in the early 1980s. It features three motors, a direct drive capstan motor, a direct drive reel motor, and a servo-controlled pinch roller motor. It can play and record in both standard and high-speed modes, making it compatible with a wide range of tapes. The GX-600DB also has advanced features such as Dolby noise reduction, pitch control, and a three-head system for playback, recording, and monitoring. Its durable construction and precise engineering make it a popular choice for audio professionals and enthusiasts alike.