Integrated Stereo Amplifier A-550R

Pioneer Corporation; Tokyo

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  • Year
  • 1991
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 335781

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Remote Control (with wire or wireless)
  • Power type and voltage
  • Alternating Current supply (AC) / 220-230/240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 120 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Integrated Stereo Amplifier A-550R - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 420 x 126 x 352 mm / 16.5 x 5 x 13.9 inch
  • Notes

  • A hi-fi stereo integrated amplifier housed in a black (or silver, Germany only) metal case with remote control (CU-A001), with continuous power output of 2 x 60 watts into 8 ohms (2 x 70 watts DIN into 8 ohms). With rotary Volume/Balance, Bass and Treble controls, rotary switches for Rec Selector (Tape2→Tape1, Tape1→Tape2, Source, CD, Tuner, Off) and Input Selector (Tape2, Tape1/DAT, CD, Phono, Tuner, Line), switches for Phono Selector (MM/MC), Speakers (A,B), Subsonic Filter, Loudness, Direct, Muting and power standby and a jack for headphones. On the back, RCA phono sockets for Phono, Line, Tuner, CD, DAT/Tape1 and Tape2, for Adaptor Input and Output (connected with removable links), terminals for 2 pairs of loudspeakers (A,B), terminals for system control, and 3 AC outlets.

    Specification  
    Continuous power output
    both channels driven
    at 20Hz—20kHz    		  
     THD 0.009%, into 8Ω
     THD 0.02%, into 4Ω    		 60W + 60W
    80W + 80W
    DIN Continuous power output
    (both channels driven at 1kHz)    		  
     THD 1%, into 8Ω
     THD 1%, into 4Ω    		 70W + 70W
    100W + 100W
    Dynamic power output
    (on EIA dynamic test signal)    		  
     8Ω/4Ω/2Ω 75W/110W/150W
    Total harmonic distortion
     20Hz—20kHz, 40W, 8Ω
     20Hz—20kHz, 50W, 4Ω
    0.009%
    0.02%
    Input sensitivity/impedance
     PHONO (MM)
     PHONO (MC)
     CD, TUNER, LINE, TAPE
    2.5mV/50kΩ
    0.2mV/100Ω
    150mV/40kΩ
    Output level/impedance
     TAPE REC, ADAPTOR OUTPUT
    150mV/2.2kΩ
    Frequency response
     PHONO (MM)
     PHONO (MC)
     CD, TUNER, LINE, TAPE
    20Hz—20kHz ±0.3dB
    20Hz—20kHz ±0.5dB
    5Hz—100 kHz +0dB,-3dB
    Filter (Subsonic) 17Hz (12 dB/oct.)
    S/N ratio
    (IHF, short circuit, A network)    		  
     PHONO (MM, 5mV input)
     PHONO (MC, 0.5V input)
     CD, TUNER, LINE, TAPE    		 93dB
    74dB
    108dB
    S/N ratio
    (DIN, continuous power/50mW)    		  
     PHONO (MM)
     CD, TUNER, LINE, TAPE    		 74dB/63dB
    88dB/65dB

    Versions/Power requirements

    HE Europe 220-230, 240V AC 50/60Hz switchable
    HEWZ Germany 220-230, 240V AC 50/60Hz switchable

    Power consumption: 550 watts

  • Net weight (2.2 lb = 1 kg)
  • 9.1 kg / 20 lb 0.7 oz (20.044 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual Pioneer A-450R A-550R dated July 1991)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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