Member Summary

Sound Rating: 4 / 10 # Owners: 3
Relaibility Rating: 5 / 10 Views: 291 # Reviews: 2

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Technical Details

Brand: Akai


Category:Mid High Fidelity


Electronics:Solid State


Country of Manufacture:Japan

Release dates:1969 - 1972

Tracks:1/4 Rec/PB

Speeds: 3 3/4, 7 1/2

Max Reel Size("): 7"

Number of heads: 3

Head Composition: Permalloy

Head Configuration: Stereo

# Motors: 3

Auto Reverse?:No

Voltage(s): 110-120v

Outputs: RCA

Frequency Response:(3db): 7½ ips: 30 - 22kHz

Wow and Flutter:(less than) 0.15% RMS at 7½ ips and 0.20% RMS at 3¾ ips

Signal-to-Noise Ratio:better than 50dB

Sound quality rating:6 / 10

Long-term reliability rating: 7/ 10

Additional Details


The  4000D deck succeeded the very similar 3000D model of 1968 but had an improved upper frequency response at 3¾ ips (an extra 2kHz) and some minor cosmetic alterations.
Tape decks (with no internal power amplifiers or speakers) were just starting to gain popularity (although they had been around since the early sixties).  As more people began to own hi-fi equipment, tape recorder buyers could opt to  dispense with large, heavy machines carrying internal amplifiers and speakers, neither
of which could ever match the quality standards of external equipment, and save substantial amounts of money with the new scaled-down record/playback decks.
This was an economy deck but with a performance to match and even exceed professional machines of a few years earlier.
Speed change was via a slip-on capstan sleeve and a rocker-type equalization switch – clumsy but economical.

Additional Info

Semi-conductors: 17 silicon transistors, 2 diodes and 2 rectifiers / Rewind speed: 150 seconds for 1,200 ft tape / Inputs: microphone – 0.5mV, line – 50mV / Outputs: line – 1.23v at 0 VU, stereo headphones / Dimensions: 12½ x 15¾ x 7½ (315 x 405 x 180 mm) / Weight: 25.3 lb (11.5 kg) / quarter-track stereo


Overall a very reliable machine. Decent sound but certainly far from the best in my collection.
Sound: 6
Performance: 8
3 years ago
Adding to collection without review.
7 months ago

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