Denon DRS-810 stereo cassette deck serial number: 1111507677 The DRS-810 deck has been in production from 1992 to 1996. A so long period indicates a good design. The serial number indicates that this is a copy built in 1996. Top class because of a solid indestructible dual capstan loop work. A generously sized power supply unit. 4 motors and 3 tone heads and Noise reduction using Dolby B and C as well as HX-Pro. Maintenance such as cleaning the heads can be done through the bottom. There is a removable panel that gives access to the headhouse. SPECS: Frequency range from 15 Hz to 23,000 Hz. Signal/noise ratio 75 DB. Dimensions: 44 x 12 x 32 cm. Weight: 7 kg. Type: 3-head, single compact cassette deck Track System: 4-track, 2-channel stereo Tape Speed: 4.8 cm/s Heads: 1 x combination record/playback, 1 x erase Motor: 1 x capstan, 1 x reel, 1 x actuator Tape Type: type I, CrO2, Metal Noise Reduction: B, C Headroom Extension: HX Pro Signal to Noise Ratio: 75dB (dolby C) Wow and Flutter: 0.038% Input: 80mV (line) Output: 0.62V (line) Dimensions: 434 x 122 x 320mm Weight: 6.6kg