Very nice good working Akai 3-head with Dolby. Direct monitoring possible. SOS function for echo effect. And Dolby This machine is optically and technical excellent Plays, spins and records fine. All Contacts cleaned inside, wheels cleaned. Heads are cleaned, and demagnetized. The 7,5” adapter pully is still present. Sounds very good with the tape that comes with it. The reels are included, they sound good, but best results with new tape. Carefully shipped The Akai 4000DB 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 4000DB 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. SPECS: Track system: 4-track, 2-channel Heads: 1 x record, 1 x playback, 1 x erase Motor: 1 x SSM-1 4-pole induction 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: 30Hz to 23kHz (7 1⁄2 ips) Signal to Noise Ratio: 50dB Total harmonic distortion: 1.5% Crosstalk: 50dB Input: 70mV (line), 7mV (DIN), 0.8mV (mic) Output: 1.228V (line), 0.4V (DIN Dimensions: 406 x 314 x 194mm Weight: 18 Kg Carefully shipped Pictures are description