Category:Mid High Fidelity (most Japanese recorders fall into this category)
Country of Manufacture:Japan
Release dates:1979 - 1984
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 10.5"
Number of heads: 3
Dimension: 17.5 x 17.3 x 9.5" (446 x 440 x 241 mm )
Head Composition: Permalloy, Ferrite/Glass
Head Configuration: Stereo
# Motors: 3
Voltage(s): 110-120v, 220-240v, Multi
Frequency Response: 7½ ips: 30Hz to 26kHz +- 3dB
Wow and Flutter:less than 0.03% @ 7½ ips
Signal-to-Noise Ratio:better than 62 dB at 7½ ips
Sound quality rating:6 / 10
Long-term reliability rating: 7 / 10
Weight: 39.2 lbs ( 17.6kg)
The GX-620 was a 3-motor, 4-track stereo tape deck with IC logic controlled function buttons. An AC servo motor was used for the capstan. Speeds of 7½ and 3¾ ips were provided and NAB reels of up to 10½ ” could be used. A unique feature of this model (with the exception of its successor, the GX 625, is that it was the only Akai
deck with the tape counter situated within the head cover. The clear lucite plastic with colored LED’s used for the tape control buttons, gave this deck a unique look. A pitch control function and timer start switch was provided for U.S. models only. It was also available in Europe with a black faceplate.
One issue that owners report being concerned with is that the tape makes contact with the rotating capstan shaft when idle and not in play, which seemed like an unusual oversight on a Akai’s part. Owners also report that is a good idea to replace the often defective SC458 transistors for better performance.
Rewind speed: 120 seconds using a 1,800 ft tape
Optional RC-18 Remote Control Unit or RC-70 wireless