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Akai GX-400D-SS

2/4 Channel Surround Stereo Tape Deck (1975)

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Akai GX-400D-SS


The GX-400D-SS employs a 4-track system which can be used for either 4-channel or 2-channel stereo recording and playback.

4-channel stereo recording and playback requires the simultaneous use of all 4 tracks in one direction.

2-channel stereo recording and playback requires the simultaneous use of two tracks.

The first stereo recording (playback) takes place on tracks 1 and 3 and the second on tracks 2 and 4 after the reels have been inverted.

2 channel reverse playback can be accomplished by depressing the reverse button (inverting of reels by hand is not necessary).


Track system: auto reverse, 4-track, 4-channel, stereo/multi channel system

Heads: 1 x record, 1 x playback, 2 x erase

Motor: 2 x reel, 1 x capstan

Reel size: up to 10.5 inch reel

Equalization: NAB

Tape speeds: 3 34  7 12  15 ips

Wow and flutter: 0.035% (15 ips)

Frequency response: 20Hz to 27kHz (15 ips)

Signal to Noise Ratio: 55dB

Total harmonic distortion: 1%

Input: 100mV (line), 10mV (DIN), 0.5mV (mic)

Output: 1.23V (line), 0.6V (DIN)

Semiconductors: 95 x transistors, 88 x diodes, 4 x linear IC

Dimensions: 457 x 590 x 240mm

Weight: 31.2kg


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