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The Akai 4000-DS MK II is a reel-to-reel tape deck manufactured by Akai in the 1970s. It is a 3-head, 2-motor unit that operates at speeds of 3.75 and 7.5 inches per second. The tape deck features auto-reverse playback and recording capabilities. It has a frequency response of 30 Hz to 24 kHz and of...