Integrated Stereo Amplifier RA-412

Roland Electronics Co. Ltd., Rotel; Tokyo

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  • Year
  • 1976–1981
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 154043

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 100 or 117 or 220 or 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 50 W (undistorted)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Integrated Stereo Amplifier RA-412 - Roland Electronics Co. Ltd.,
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 400 x 110 x 240 mm / 15.7 x 4.3 x 9.4 inch
  • Notes

  • A 2 x 25 watt Hi-Fi stereo integrated amplifier. Rotary controls for Bass, Treble, Balance and Volume. Rotary switches for Speakers (Off, 1, 2, 1+2, Speaker 4 CH) and Function (Phono 1, Phono 2, Tuner, Aux). Press buttons for Power, Low Filter, High Filter, Loudness and Mono. Switches for Muting (-15dB) and Tape Monitor (Dubbing,1, 2, Source). Power on pilot light. Jack for Headphones. Connections for two pairs of loudspeakers.

    Continuous Power Output :
    25 watts per channel, min. RMS both channels driven into 8 ohms
    from 20Hz to 20kHz with no more than 0.5% Total Harmonic Distortion
    Intermodulation distortion: < 0.1% at rated output
    Frequency response: 5Hz to 90kHz ± 3dB at 1 watt per channel
    Damping factor: 50 at 1kHz
    Input Sensitivity/Impedance : 2.5mV/47kΩ (MM); 150mV/50kΩ (line)
    Signal to noise ratio: 70dB (MM), 90dB (line)
    Output: 280mV/3.3kΩ (line), 105mV/75kΩ (DIN)

    Versions/Power Requirements
    100/117/220/240 V AC 50-60Hz Switchable

  • Net weight (2.2 lb = 1 kg)
  • 6.5 kg / 14 lb 5.1 oz (14.317 lb)
  • Price in first year of sale
  • 230.00 $
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Technical Manual for the RA-412 dated Feb 76)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Owner's Manual for the RA-412)
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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