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Sound Rating: 7 / 10 # Owners: 2
Relaibility Rating: 7.5 / 10 Views: 514 # Reviews: 1

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Technical Details

Brand: Akai


Category:Super High Fidelity


Electronics:Solid State


Country of Manufacture:Japan

Release dates:1982 - 1984

Original Price: $800

Tracks:1/4 Rec/PB

Speeds: 3 3/4, 7 1/2

Max Reel Size("): 10.5"

Number of heads: 6

Dimension: 17½ x 19 x 10" (440 x 483 x 256mm)

Head Composition: Ferrite/Glass

Head Configuration: Stereo

Auto Reverse?:Yes

Voltage(s): 110-120v, 220-240v

Outputs: RCA, DIN

Frequency Response:7½ ips: 25Hz to 26kHz ( 3dB)

Wow and Flutter:.03% WRMS at 7½ ips, .04% WRMS at 3¾ ips

Signal-to-Noise Ratio:65 dB at 7½ ips

Sound quality rating:7 / 10

Long-term reliability rating: 8/ 10

Weight: 46.4lbs (21kg)

Additional Details


The GX-646 was an auto-reverse, 4 track stereo deck with two speeds ( 3¾ & 7½ ips) and
a whole lot of automatic features including timers, tape bias adjustments, tape position memory and more. This was the final model from the 600-series. It replaced the GX-636
and had the capability to use Extra Efficiency tapes (EE). Other improvements over previous 600 series models were “hanging” type VU meters, a three mode timer start switch, and an additional bias adjustment control on the front panel. Available in black or silver.

Additional Info

Year 1982 – 1984
U.S. Price New $800.00
Track System Quarter-track stereo
Heads Erase E4-245 (x2) Record R4-241 GX head (x2)- Playback P4-500 GX head (x2)
Motors AC servo capstan motor (SCM200), 2 x AC eddy current reel drives
Maximum Reel Size 10½ ”
Tape Speeds 3¾ & 7½ ips
Frequency Response (3dB)
7½ ips: 25Hz to 26kHz
3¾ ips: 25Hz to 25kHz
Wow & Flutter 0.03% WRMS at 7½ ips, 0.04% WRMS at 3¾ ips
Signal to noise ratio 65 dB at 7½ ips
Distortion .4% at 7½ ips
Rewind Speed 75 seconds for 1200ft
Inputs Mic: 0.25mV impedance 600 ohms, Line: 70mV 100 ohms
Outputs Line: .775V at 0 VU – load impedance more than 20 Kohms
Dimensions 17½ x 19 x 10″ (440 x 483 x 256mm)
Weight 46.4lbs (21kg)

Voltages 5 Versions were available- 100v 50Hz, 120v 60Hz, 220v  50/60Hz, 240v 50Hz & Multi (Switchable)


A pretty decent sounding Japanese tape recorder. Some people think it's ugly but I happen to think it's beautiful with some great retro style
Sound: 7
Performance: 7
3 years ago
Marconi 888 b

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