Integrated Stereo Amplifier A-447

Pioneer Corporation; Tokyo

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  • Year
  • 1990
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 215360

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120; 220-230/240; 110/120-127/220/240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 120 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Integrated Stereo Amplifier A-447 - 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 case (or silver case, W Germany only) with continuous average power output of 2 x 60 watts into 8 ohms (2 x 70 watts into 8 ohms DIN). Anti-vibration construction with honeycomb chassis and heat sink. With MM and MC cartridge phono equalizer. With Bass and Treble tone controls, Direct, MM/MC selector, Loudness, Subsonic filter, Muting, Speakers (A,B,A+B) and a jack for headphones. With RCA phono sockets for input Phono, Line, Tuner, CD, for input output DAT/Tape1, Tape2 and Adaptor (I/O connected by removable links), and terminals for 2 pairs of loudspeakers. The General Export (SD) model also has 3 AC outlets.

    Same as the later Pioneer A-449 Integrated Stereo Amplifier apart from appearance.

    Specification  
    Continuous power output
    (both channels driven at 20Hz—20kHz)    		  
     THD 0.009%, 8Ω
     THD 0.02%, 4Ω    		 60W + 60W
    80W + 80W
    DIN Continuous power output
    (both channels driven at 1kHz)    		  
     THD 1%, 8Ω
     THD 1%, 4Ω    		 70W + 70W
    100W + 100W
    Dynamic power output
    (on EIA dynamic test signal)
     8Ω/4Ω/2Ω

    75W/110W/150W
    Total harmonic distortion
     20Hz—20kHz, 60W, 8Ω
     20Hz—20kHz, 80W, 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—100kHz +0dB,-3dB
    Filter (SUBSONIC) 17Hz (12dB/oct.)
    S/N ratio
    IHF short circuit, A network)
     PHONO (MM, 5mV input)
     PHONO (MC, 0.5mV input)
     CD, TUNER, LINE, TAPE

    93dB
    74dB
    108dB

    Versions/Power requirements

    HE Europe 220-230, 240V AC 50/60Hz switchable
    HEWZ W Germany 220-230, 240V AC 50/60Hz switchable
    KC Canada 120V AC 60Hz
    SD General 110/120-127/220/240V AC 50/60Hz with voltage selector

    Power consumption:  550W

  • Net weight (2.2 lb = 1 kg)
  • 8.1 kg / 17 lb 13.5 oz (17.841 lb)
  • Source of data
  • - - Manufacturers Literature
  • Mentioned in
  • - - Manufacturers Literature (1990 Pioneer Hi-Fi Components catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual Pioneer A-447 A-337 dated May 1990)
  • Author
  • Model page created by João-Afonso Santos. See "Data change" for further contributors.

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