Stereo Amplifier A-225

Pioneer Corporation; Tokyo

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  • Year
  • 1989
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 308607

 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) / 220/240; 240; 110/120-127/220/240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 70 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Amplifier A-225 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 420 x 103 x 282 mm / 16.5 x 4.1 x 11.1 inch
  • Notes

  • A hi-fi stereo integrated amplifier housed in a black case (or silver case, Germany only) with continuous power output of 2 x 35 watts into 8 ohms (2 x 40 watts into 8 ohms DIN). With rotary controls for Volume, Balance, Bass and Treble, rotary Input Selector (DAT/Tape1, CD, Phono, Tuner), push button switches for Speakers (A,B), Direct, Loudness and Adapt/Tape2 and a jack for headphones. RCA phono sockets for input Phono, Tuner, CD, for input/output DAT/Tape1 and Adapt/Tape2 and terminals for 2 pairs of loudspeakers (A, B). The General Export model (SD) also has 3 AC outlets.

    The later Pioneer A-227 Integrated Stereo Amplifier is the same apart from appearance.

    Specification  
    Continuous power output
    (both channels driven
    at 20Hz—20kHz)    		  
     THD 0.07%, into 8Ω 35W + 35W
    DIN Continuous power output
    (both channels driven at 1kHz)    		  
     THD 1.0%, into 8Ω
     THD 1.0%, into 4Ω    		 40W + 40W
    50W + 50W
    Total harmonic distortion
     20Hz—20kHz, 35W, 8Ω    		  
    0.07%
    Input sensitivity/impedance  
     PHONO (MM)
     CD, TUNER, DAT/TAPE 1, ADPT/TAPE 2    		 2.5mV/50kΩ
    150mV/50kΩ
    Output level/impedance
     TAPE REC, ADAPTOR OUTPUT
    150mV/2.2kΩ
    Frequency response
     PHONO (MM),
     CD, TUNER, DAT/TAPE 1, ADPT/TAPE 2,
    20Hz—20kHz ± 0.5dB
    10Hz—50kHz +1dB,-3dB
    Signal-to-Noise ratio
    (IHF short circuit, A network)    		  
     PHONO (MM, 5mV input)
    CD, TUNER, DAT/TAPE 1, ADPT/TAPE 2    		  77dB
    100dB
    Signal-to-Noise ratio
    (DIN, continuous power/50mW)    		  
     PHONO (MM)
     CD, TUNER, DAT/TAPE 1, ADPT/TAPE 2    		 67dB/61dB
    83dB/63dB

    Versions/power requirements

    HEZ W Germany 220V, 240V AC 50/60Hz (switchable)
    HE Europe 220V, 240V AC 50/60Hz (switchable)
    HB UK 220V, 240V AC 50/60Hz (switchable)
    YP Australia 240V AC 50/60Hz
    SD General 110V, 120V-127V, 220V, 240V with voltage selector

    Power consumption: 330 watts

    controllo volume/bilanciamento/toni alti/toni bassi - commutatore direct/loudness/adapt tape 2 - commutatore DAT/Tape1-CD-Phono-Tuner - commutatori speakers A/B - presa per cuffia - power output: 35 watts per channel into 8Ω (stereo) - frequency response: 10Hz to 50kHz - total harmonic distortion: 0.07% - input sensitivity: 2.5mV (MM), 150mV (line) - signal to noise ratio: 77dB (MM), 100dB (line) - output: 150mV (line) - speaker load impedance: 4Ω to 16Ω - consumo 330 watt.

    Made in Japan.

  • Net weight (2.2 lb = 1 kg)
  • 5.6 kg / 12 lb 5.4 oz (12.335 lb)
  • Mentioned in
  • - - Manufacturers Literature (1989 Pioneer Hi-Fi Components catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual Pioneer A-225 A-115 dated Apr 1989)
  • Author
  • Model page created by Edoardo Sigismondo. See "Data change" for further contributors.

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