GX4000D

About the GX4000D

The Akai GX-4000D is a ¼‑track, 2‑channel stereo/monaural reel‑to‑reel tape recorder using ¼‑inch tape and a maximum reel size of 7 inches. It employs Akai’s GX ferrite/glass record and playback heads plus a separate erase head, driven by a single 4‑pole induction motor. The deck offers two tape speeds, 3¾ ips and 7½ ips, selected by adding or removing a capstan sleeve, and follows NAB equalization. It uses a 4‑track head configuration that allows stereo recording and playback and flexible track usage in both directions, with front‑panel twin VU meters, recording indicator lamp, recording safety button, monitor/source selector, and microphone inputs with level controls. Frequency response is rated to 30 Hz–24 kHz at 7½ ips, with signal‑to‑noise ratio around 60 dB and total harmonic distortion about 1% at the higher speed, delivering clean, detailed tape reproduction. The machine is fully manual (no auto‑reverse), accepts up to 7‑inch reels, and is valued for its solid Japanese build, reliable mechanics, and straightforward, analog control layout for home listening and basic recording work.