Reference Power Amplifier M-73

Pioneer Corporation; Tokyo

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  • Year
  • 1990–1996
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 218674

 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
  • 220 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Reference Power Amplifier M-73 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 459 x 163 x 424 mm / 18.1 x 6.4 x 16.7 inch
  • Notes

  • A hi-fi stereo power amplifier housed in a black metal case with wooden side panels with continuous power output of 2 x 110 watts into 8 ohms (2 x 125 watts DIN into 8 ohms). Class A output up to 2 x 20 watts (2 x 25 watts DIN). Partner to the Pioneer C-73 Reference Control Amplifier. With Pioneer's Super Linear Circuit, Clean Ground system and Direct Connection. With rotary switches for Class A/Class B and CD/Line Input Level, push button switches for Speakers A and B, CD Direct and Control Amp, and a jack for headphones. With terminals for input CD DIRECT, LINE DIRECT and CONTROL AMP and for output CD/LINE OUTPUT and Left and Right channel terminals each for 2 pairs of loudspeakers.

    Specification  
    Continuous power output
    both channel driven
    20Hz to 20kHz, THD 0.009%,
    Class B/Class A into 8Ω    		  


    110W x 2 / 20W x 2
    DIN power
    (both channels driven)
    1kHz, THD 0.7%,
    Class B/Class A into 8Ω


    125W x 2 / 25W x 2
    Dynamic power
    (EIA test signal) Class B
     8Ω
     4Ω
     2Ω

    170W
    300W
    325W
    Harmonic distortion
    20Hz—20kHz, 50W, 8Ω Class B
    0.005%
    Input terminals
    (sensitivity/input impedance)
     CONTROL AMP INPUT, CD DIRECT INPUT,
     LINE DIRECT INPUT


    1V/40kΩ
    Frequency response
     CONTROL AMP INPUT, CD DIRECT INPUT,
     LINE DIRECT INPUT

    5Hz—150kHz -0dB,-3dB
    S/N ratio
    (short circuit, A network)
     CONTROL AMP INPUT, CD DIRECT INPUT,
     LINE DIRECT INPUT


    120dB

    2 x 125 Watt Sinusleistung DIN (8 Ohm),
    2 x 180 Watt Sinusleistung DIN (4 Ohm).

    Versions/Power requirements

    HEZ W Germany 220/240V AC 50/60Hz switchable
    HB UK 220/240V AC 50/60Hz switchable

    Power consumption:  1000 Watts

  • Net weight (2.2 lb = 1 kg)
  • 20.9 kg / 46 lb 0.6 oz (46.035 lb)
  • Source of data
  • -- Original prospect or advert
  • Mentioned in
  • - - Manufacturers Literature (1993-94 Pioneer Audio Video Guide)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (1995-96 Pioneer Audio Video Guide)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Service Manual M-73 dated Aug 1990)

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