Akai 4000DS MKII Reel to Reel Tape Deck 1970's 1976-1979

The Akai 4000DS is a four-track, two-channel stereo reel to reel tape recorder for use with 7" reels.
The employment of a highly efficient induction motor and boldly designed flywheel in the 4000DS results in stable tape travel and reduced wow and flutter.
This feature coupled with a three head system including Akai's one-micron gap playback head assures clear playback sound. Technical characteristics:
– 4-track, 2-channel, stereo/mono system
– heads: 1 x record, 1 x playback, 1 x erase
– motor: 4-pole induction SSM-1
– reel size: up to 7 inch reel
– tape speeds: 3 3/4 7 1/2 ips
– wow and flutter: 0,15% (7 1/2 ips)
– frequency response: od 30 Hz to 23 kHz (7 1/2 ips)
– signal to noise Ratio: 50 dB
– total harmonic distortion: 1,5%
– crosstalk: 50dB
– input: 70mV (line), 7mV (DIN), 0,8mV (mic)
– output: 1.228V (line), 0.4V (DIN)
– semiconductors: 11 x transistors, 4 x IC, 4 x diodes
– dimensions: 43 cm, 32 cm, 15 cm (W x H x D)
– weight: 12kg
– Japanese production from 1973/78r.