This Akai DX-57 is a vintage stereo cassette deck with Dolby B/C and HX-Pro noise reduction, it was first sold by Akai in 1992 Technical data: Type: 3-head, compact cassette deck System: 4-track, 2-channel stereo Tape speed: 4.76 cm / s Heads: 1 x record, 1 x playback, 1 x erase Motor: 1 x reels, 1 x capstan Tape type: Type I, Cr02 II, Metal IV, Noise reduction: Dolby B, C MPX filter: yes Frequency response: 15- 20,000 Hz (metal band) Signal-to-noise ratio: 72 dB (Dolby C) Uniformity: 0.045 % * Distortion: 1.0 Distortion factor: 1.0 Input: 70 mV (line) Output: 0.388 V (line) Accessories: no remote control Special features: Double capstan: yes Rear tape control : yes Timer start Rec/Play : yes Headphone output: yes (adjustable) Bias control: yes Dimensions: 425 x 135 x 351mm Weight: 5.3kg