Stereo Amplifier A-443

Pioneer Corporation; Tokyo

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  • Year
  • 1988 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 321866

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; 110; 120-127; 220; 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 160 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Amplifier A-443 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 420 x 126 x 348 mm / 16.5 x 5 x 13.7 inch
  • Notes

  • A stereo hi-fi integrated amplifier with output power of 60 watts RMS (70 watts DIN) per channel into 8 ohms or 80 watts RMS (100 watts DIN) per channel into 4 ohms, housed in a black or silver metal case (referred to as the A-443-S model in the Service Manual only). Push button switches for Speakers A and B, Subsonic, Loudness, Direct, Muting and Phono Selector (MM/MC), rotary Bass and Treble tone controls, rotary switches for Rec Selector (Tape 2→1, Tape 1→2, Source, Off, CD, Tuner) and Input Selector (Tape2, DAT/Tape1, CD, Phono, Tuner and Line) and a jack for Phones. On the back, RCA phono input sockets for Phono, Line, Tuner and CD, input/output sockets for DAT/Tape1 and Tape2, input/output sockets for connection to an equalizer (after removal of two shorting bars), terminals for two pairs of Loudspeakers (A, B) and on the Canadian and general export models, 3 AC outlets.

    Specification  
    Continuous power output
    (both channels driven at 20Hz-20kHz)    		 60W + 60W (T.H.D. 0.008%, 8Ω)
    80W + 80W (T.H.D. 0.02%, 4Ω)
    DIN Continuous power output
    (both channels driven at 1kHz)    		 70W + 70W (T.H.D. 1.0%, 8Ω)
    100W + 100W (T.H.D. 1.0%, 4Ω)
    Dynamic power output (8Ω/4Ω/2Ω)
    (on EIA dynamic test signal)    		 75+75W/110+110W/150+150W
    Total harmonic distortion  
      20Hz-20kHz, 60W, 8Ω
      20Hz-20kHz, 80W, 4Ω    		 0.008%
    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 OUT 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.)
    Signal-to-Noise ratio
    (IHF short circuit, A network)    		  
      PHONO (MM, 5mV input/MC, 0.5mV input)
      CD, TUNER, LINE, TAPE    		 93dB/74dB
    107dB

    Versions/Power requirements

    KC Canada model 120V only
    HEZ West Germany model 220V and 240V (Internally switchable)
    HE European Continent model  220V and 240V (Internally switchable)
    HB United Kingdom model 220V and 240V (Internally switchable)
    SD General export model 110V, 120-127V, 220V and 240V (voltage selector)

    Power consumption :  550 watts

    Similar to the Pioneer A-445 Stereo Amplifier.

  • Net weight (2.2 lb = 1 kg)
  • 8.1 kg / 17 lb 13.5 oz (17.841 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual A-443 A-443-S A-333 A-333-S dated May 1988)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Operating Instructions A-443 A-333)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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