Specyfikacja magnetofonu szpulowego Akai GX-625:
Track system: 4-track, 2-channel, stereo/monaural system
Heads: 1 x GX record, 1 x GX playback, 1 x erase
Motor: 2 x reel drive, 1 x capstan
Reel size: up to 10.5 inch reel
Tape speeds: 3 3⁄4 7 1⁄2 ips
Wow and flutter: 0.03% (7 1⁄2 ips)
Frequency response: 30Hz to 26kHz (7 1⁄2 ips)
Signal to Noise Ratio: 62dB
Total harmonic distortion: 0.5%
Input: 70mV (line), 2mV (DIN), 0.25mV (mic)
Output: 0.775V (line), 0.775V (DIN)
Wymiary: 440 x 446 x 241mm
Waga: 17.6kg