Volledig werkende AKAI GX-646, destijds de Rolls Royce onder de tapedecks.
Een klein onderhoud is wel wenselijk, heeft jaren stil gestaan in afgesloten droge ruimte. Getest, link naar filmpje kan worden doorgestuurd.
Hieronder de specificaties zoals gegeven door de fabrikant.
Afstandbediening mogelijk, wel niet meegeleverd.

  General
Manufacturer: Akai
Model: GX-646
Type: Auto-Reverse tape machine
Years of manufacture: 1981 - 1984
Made in: Japan
Color: Silver, Black
Remote control: yes, RC-90 wired
Power consumption: 75 W
Dimensions: 440 x 483 x 256 mm (WxHxD)
Weight: 21 kg
Original price approx.: 2'000 DM
  Connections
Number of inputs:
Microphone 0.25 mV (5.0 kOhm) 2x 6.3 jack.
Line 70 mV
DIN 2.0 mV
Number of outputs:
Line 0.775 V at 0 VU
DIN 0.3 V
Headphone 6.3 mm jack
  Technical Data
Max. coil diameter: 26,8 cm
Drive: 3 motors
  AC Servo Motor for Capstan-drive 1x AC Eddy current Motor for Reel 2x
Heads: 6x
  2x GX heads recording
2x GX heads playback
2x erase heads
Tracks: Quarter track, 2-channel, stereo
Tape speeds:
19.0 cm/ s ± 0.8 %
9,5 cm/ s ± 1,0 %
Synchronisation fluctuations:
<0.03 % WRMS, 0.07 % DIN 45500 at 19.0 cm/ s
<0.04 % WRMS, 0.09 % DIN 45500 at 9.5 cm/ s
Frequency response:
25 - 33,000 Hz ± 3 dB at 19.0 cm/ s
25 - 26,000 Hz ± 3 dB (0 VU)
25 - 25,000 Hz ± 3 dB at 9.5 cm/ s
25 - 15,000 Hz ± 3 dB (0 VU)
Signal-to-noise ratio: <65 dB at 19.0 cm/ s (DIN45500)
Signal-to-noise ratio: ~60 dB
Distortion factor: <0.4 % at 19.0 cm/ s
Equalization:
Crosstalk attenuation:
Cancellation attenuation:
Premagnetization and extinction frequency:
  Special Features
Auto-Reverse
Pitch Control
Timer Start
Bias Adjust
Auto Mute