Integrated Stereo Amplifier RA-820B

Rotel, The, Co., Ltd.; Tokyo

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  • Year
  • 1983 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 307916

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120; 220; 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 50 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Integrated Stereo Amplifier RA-820B - Rotel, The, Co., Ltd.; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 66 x 271 mm / 16.9 x 2.6 x 10.7 inch
  • Notes

  • A 2 x 25 watt Hi-Fi stereo integrated amplifier. Rotary control for Volume/Balance. Press Buttons for Power, Mono, Tape, Tuner, CD and Phono. Power on Pilot Light. Jack for Headphones.

    Continuous Power Output :
    25 watts per channel, min. RMS both channels driven into 8Ω
    from 20Hz to 20kHz with no more than 0.08% Total Harmonic Distortion
    Total Harmonic Distortion ..... : not > 0.08% at rated power
    Intermodulation Distortion .....: not > than 0.08% at rated power
    Damping Factor .................. : 25 (20Hz to 20kHz, 8Ω)
    Frequency Response :
          Phono ...........................: 20Hz - 20kHz ± 0.3dB (RIAA STD)
          CD, Tuner, Tape .............: 10Hz - 40kHz +1.0dB, -3.0dB
    Signal to Noise ratio :
          Phono ...........................:  75dB  
          CD, Tuner, Tape .............:  86dB (IHF A Network)
    Input Sensitivity/Impedance   :
          Phono ......................... :  3.0mV/47kΩ
          CD, Tuner, Tape ............:   220/24kΩ

    Speaker load impedance       :  4 - 16Ω
    Headphones load impedance :  4 - 16Ω

    Versions/Power Requirements
    120 V AC 60Hz
    220 V AC 50Hz
    240 V AC 50Hz
    120/220/240 V AC 50-60Hz Switchable (Not available in UK, Canada or Scandinavia)

  • Net weight (2.2 lb = 1 kg)
  • 5.5 kg / 12 lb 1.8 oz (12.115 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Technical Manual for the RA-820B dated October 1983)
  • Literature/Schematics (2)
  • Owner's Manual for the RA-820B
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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