Stereo Amplifier A-858

Pioneer Corporation; Tokyo

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  • Year
  • 1989 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 213985

 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) / 220; 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 240 W (360 W max.)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Amplifier A-858 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 420 x 172 x 474 mm / 16.5 x 6.8 x 18.7 inch
  • Notes

  • A hi-fi stereo integrated amplifier with power output of 120 watts per channel into 8 ohms (180 watts into 4 ohms).  Phono input sockets for CD, Tuner, Line and MM/MC cartridge, phono input/output sockets for DAT/Tape 1, Tape2, Adapt/Tape3, Adapt2, terminals for 2 pairs of loudspeakers.

    Specification  
    Continuous power output
    (both channels driven 20Hz-20kHz)    		 105W + 105W into 8Ω, THD 0.003%
    160W + 160W into 4Ω, THD 0.005%
    Continuous power output DIN
    (both channels driven)    		 120W + 120W into 8Ω, 1 kHz, THD 1.0%
    180W + 180W into 4Ω, 1 kHz, THD 1.0%
    Power bandwidth 5 Hz - 80 kHz, 0.05%, 8Ω
    Damping factor 200/70 (1 kHz/20 Hz - 20 kHz), 8Ω
    Dynamic power output 230W/350W (4Ω/2Ω)
    Total harmonic distortion 0.003% (20 Hz - 20 kHz, 105W, 8Ω)
    0.005% (20 Hz - 20 kHz, 160W, 4Ω)
    Inter-modulation distortion 0.003% (at rated output)
    Input sensitivity/impedance  
     PHONO (MM)
     PHONO (MC)
     CD, TUNER, LINE, TAPE    		 2.5 mV/50 kΩ
    0.2 mV/100 Ω
    150 mV/50 kΩ
    Output level/impedance
     TAPE REC, ADAPTOR OUTPUT    		 150 mV/2.2 kΩ
    Frequency response  
     PHONO (MM), 20 Hz - 20 kHz
     PHONO (MC), 20 Hz - 20 kHz
     CD, TUNER, LINE, TAPE (1 Hz - 150 kHz)    		 ± 0.2 dB
    ± 0.3 dB
    +0,-3 dB
    Filter (SUBSONIC) 17 Hz (12 dB/oct.)
    Signal-to-Noise ratio
    (IHF short circuit, A network)    		  
     PHONO (MM, 5 mV input/MC, 0.5 mV input)
     CD, TUNER, LINE, TAPE    		 95 dB/77 dB
    110 dB
    Signal-to-Noise ratio
    (DIN, continuous power/50 mW)    		  
     PHONO (MM)
     CD, TUNER, LINE, TAPE    		 74 dB/65 dB
    92 dB/68 dB

    Versions/Power requirements
    (HEZ)  W. Germany / 220, 240 V AC 50/60 Hz (switchable)
    (HB)   UK               / 240, 220 V AC 50/60 Hz (switchable)

    Power consumption   1,000W

    Similar to the Pioneer A-71 Elite Stereo Amplifier (US & Canada model).

    2x 180/120W an 4/8Ohmm; 8 Eingänge, kanalgetrennter Aufbau mit 2 Netztrafos.

  • Net weight (2.2 lb = 1 kg)
  • 24.5 kg / 53 lb 15.4 oz (53.965 lb)
  • Price in first year of sale
  • 1,600.00 DM
  • Mentioned in
  • -- Original prospect or advert (1989 Hi-Fi Components catalogue)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Service Manual A-858)

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