Country of Manufacture:Japan
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 4
Head Composition: Permalloy
Head Configuration: Quad
# Motors: 3
Frequency Response:( 3dB): 7½ ips: 20Hz - 20kHz 3¾ ips: 30Hz - 12kHz
Wow and Flutter:less than 0.07% at 7½ ips. less than 0.12% at 3¾ ips
Signal-to-Noise Ratio:better than 60dB (3% THD level to weighted noise level)
Sound quality rating:6 / 10
Long-term reliability rating: 8 / 10
This ‘little brother’ to the quadraphonic QD-5500S had a similar specification but, while stereo record and playback was no problem, only quadraphonic playback was possible.
Features included a 4-channel playback head, stereo record and erase heads, auto-reverse playback (stereo) and a three-motor transport design utilising a belt to link the capstan motor to the capstan/flywheel. All transport controls were of the solenoid-touch type and two tape speeds (7½ and 3¾ ips) were provided. Maximum reel size was 7″.