Pioneer A-656 MK II

Data[edit]

General

  • Manufacturer: Pioneer
  • Model: A-656 MK II
  • Type: Integrated amplifier
  • Years of manufacture: 1990 - 1992
  • Made in: Japan
  • Colors: Black, Silver (A-656-G MK II)
  • Remote control: No
  • Power consumption: 650 W max.
  • Dimensions: 420 x 162 x 435 mm (WxHxD)
  • Weight: approx. 14 kg
  • Original price approx.: 800 DM


Connections

  • Number of inputs:
    • 1x Phono (Cinch): 2.5 mV / 50 kOhm (MM), 0.2 mV / 100 Ohm (MC).
    • CD, Tuner, Line, 3x Tape In (Cinch): 150 mV / 50 kOhm
  • Number of outputs:
    • 3x Tape Out (Cinch): 150 mV / 2,2 kOhm
    • Headphones (6,3mm jack)
    • 2 pairs of loudspeakers


Technical Data

  • Continuous power (at distortion factor)
    • 8 Ohm: 2x 80 W (0.005%)
    • 4 Ohm: 2x 120 W (0.008%)
    • 2 Ohm: 2x 160 W (0.008%)
  • Dynamic power
    • 8 Ohm: 2x 140 W
    • 4 Ohm: 2x 200 W
    • 2 Ohm: 2x 260 W
  • total harmonic distortion: 0.008%
  • Attenuation factor: 200 / 70 (8 Ohm, 1 kHz / 20 - 20 kHz)
  • Frequency response: 5 - 80,000 Hz (0.05%, 8 Ohm)
  • Signal to noise ratio: 95dB / 77dB
  • Stereo channel separation:
  • Tone control:
    • Bass: yes, ±8db (100 Hz).

Treble: yes, ±8db (10 kHz)

  • Loudness: yes, +5 db (100 Hz)/+3 db (10 kHz)
  • High Filter: no
  • Low Filter (Subsonic): yes, 17 Hz (12 db/oct.)
  • Mute: no
  • Direct/Line-Straight: yes

Remarks[edit]




Pictures[edit]

  • Excerpt from Test: Denon PMA-860, Dual CV-5670, Pioneer A-656 II, Sony TA-F 550 ES

Denon PMA-860-Test-1990.jpg


Reports[edit]

  • Report in "FonoForum" 7 / 1991


  • External differences to the A-656: smaller knobs replaced by cylindrical versions resembling the large knobs.
  • Golden dot only on the volume potentiometer.
  • Inside: still horizontal circuit boards, but already no honeycomb housing around the volume potentiometer at the back right of the unit anymore


Left[edit]

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