Akai GX-400D

• Track System: 4-track, 2-channel stereo/monaural system

• Heads: 2 record/erase GX heads and 2 playback GX heads (Akai's exclusive glass crystal ferrite heads providing wear-free life and smooth operation)

• Motors: 2 reel motors and 1 capstan motor

• Maximum Reel Size: 10.5 inches

• Tape Speeds: 3¾, 7½, and 15 inches per second

• Wow and Flutter: 0.035% (15 ips)

• Frequency Response: 20 Hz to 30 kHz (15 ips)

• Signal-to-Noise Ratio: 54 dB

• Total Harmonic Distortion: 1%

• Crosstalk: 45 dB

• Input Sensitivity: Line 100 mV, DIN 5 mV, Mic 0.5 mV

• Output Level: Line 1.23 V, DIN 0.6 V

• Semiconductors: 93 transistors and 87 diodes

• Dimensions: 457 mm (W) x 590 mm (H) x 240 mm (D)

• Weight: 31.2 kg

• Features: Automatic distortion reduction system, tape selector switch, pause control, sound on sound, auto stop and shut off, sound mixing, auto reverse, and 10½” reel capacity

• Power: Multivoltage selector covering 110-240 V

The deck is designed for high-fidelity recording and playback, employing advanced GX heads made from single crystal ferrite mounted in glass for durability and high performance. It also supports three speeds and features three separate motors including a dual capstan system for stable tape transport.

This model was manufactured in Japan in the mid-1970s and is well regarded for professional-quality audio reproduction with precise tape control and durability.