Legendary Akai 3-head deck with Glass GX heads, they do not wear! Direct monitoring possible Heads cleaned and demagnetized Play and records excellent! Optically there are several signs of wear. All contacts works good. Only the right mic input don't work. Tested several hours. Sounds perfect! Also recording with good tape. (Not included) 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: 0.06% (7 1⁄2 ips) Frequency response: 30Hz to 25kHz (7 1⁄2 ips) Signal to Noise Ratio: 57dB Total harmonic distortion: 0.5% Input: 70mV (line), 2.5mV (DIN), 0.25mV (mic) Output: 0.775V (line), 0.5V (DIN) Semiconductors: 64 x transistors, 69 X diodes, 2 X FET Dimensions: 465 X 440 X 240mm Weight: 19.5kg As is well known, the core of Akai's GX Head is made of crystal ferrite and is mounted and set in glass. The superior magnetic properties of the head material and special processing allowed the formation of a perfectly lineal shallow head gap, an acute head surface angle contour, and focusing of the magnetic field into a sharp oblong radius. Reels and NAB adapters are not included!! Carefully shipped but very heavy.