The Akai 4000 D is a reel-to-reel tape recorder manufactured by Akai in the 1970s. It is part of the Akai 4000 series of tape recorders and is known for its compact size and reliability. It offers features such as 3-speed tape transport, auto-reverse playback, and a built-in speaker. The Akai 4000 D has become popular among tape recorder enthusiasts and collectors.
