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Sound Rating: 6 / 10 # Owners: 1
Relaibility Rating: 7 / 10 Views: 414

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Technical Details

Brand: Akai


Category:Mid High Fidelity




Country of Manufacture:Japan

Release dates:1965 - 1968

Tracks:1/4 Rec/PB

Speeds: 1 7/8, 3 3/4, 7 1/2

Max Reel Size("): 7"

Number of heads: 3

Dimension: 13" x 20" x 9"

Head Composition: Permalloy

Head Configuration: Stereo

# Motors: 3

Auto Reverse?:No

Voltage(s): 110-120v, Multi

Outputs: RCA

Frequency Response:7½ ips: 40 - 21kHz; 3¾ ips: 40Hz - 18kHz

Wow and Flutter:< 0.15 % at 7½ ips, < 0.25% at 3¾ ips

Signal-to-Noise Ratio:40db

Sound quality rating:6 / 10

Long-term reliability rating: 7/ 10

Weight: 45 lbs (20.5 kg)

Additional Details


The M-8 had the same basic layout styling as its predecessors the Akai M-6 and M-7, and like the M-7 it had the exclusive “cross-field” biasing system.
All of these early “M” series Akais utilized tube circuitry and a continuously variable playback equalization design.
This was a quarter track stereo recorder with internal power amplifiers and monitor speakers. A single motor was employed for all transport functions and the maximum reel size was 7 inches.
Three speeds were available with the use of a capstan sleeve (7½ ips – 3¾ips) without the sleeve and (3¾ ips – 1 7/8ips) with the sleeve but according to test-bench reports of the time, wow and flutter were higher with the capstan sleeve fitted.
A “sound-on-sound” button was included so that one amplifier was set to play while the other to record, enabling track-to-track transfer while adding another recording.
A heavy machine at 45 lbs (20.5 kg) the M-8 was the last of the tube M series, the M-9 of 1966 being fully solid state.
The twin monitor speakers were mounted on the top of the cabinet and stereo sound was really only available near the recorder. At greater distances, the stereo effect was completely negligible and widely-spaced, wide-range remote speakers would have been necessary for normal stereo listening.
Priced at £153  in the UK in 1965, this machine was not sold in the USA as an Akai, but rebadged and sold as the  Roberts 770X.

Additional Info

three – erase, record/playback and Crossfield bias
hysteresis-synchronous, 2 speed (3,000 – 1,500 rpm), capacitor start, dynamically balanced
Tape speeds
7½, 3¾ & 17/8 ips
Frequency response
7½ ips: 40 – 21kHz
3¾ ips: 40Hz – 18kHz
17/8 ips: 40 – 10kHz
Wow & flutter
< 0.15 % at 7½ ips, < 0.25% at 3¾ ips, < 0.35% at 17/8ips
Tube complement
2 x 6267 (EF86), 2 x 12AX7, 2 x 6BQ5, 1 x 6AR5, 2 x 6X4
Rewind speed
90 seconds for 1,200 ft reel
Audio output power
6 watts per channel
low level high impedance mic input, high level line input
high impedance head output, 8/16 ohm amplifier output
2 x top-mounted monitor speakers
2 x 8″ coaxial extension speakers (optional)


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