Pioneer A-757 MK II

Short description[edit]

External differences from the A-757: smaller knobs replaced by cylindrical versions resembling the large knobs. Golden dot only on the volume pot. Inside: still horizontal circuit boards, but already no honeycomb housing around the volume pot at the back right of the unit. No copper bottom anymore!

Data[edit]

General

  • Manufacturer: Pioneer
  • Model: A-757 MK II
  • Type: Integrated amplifier
  • Years of manufacture: 1990 - 1991
  • Made in: Japan
  • Color: Black
  • Remote control: No
  • Power consumption: 820 W (max)
  • Dimensions: 420 x 435 x 162 mm (WxDxH)
  • Weight: 19,5 kg
  • Original price approx.: 1'000 DM


Connections

  • Number of inputs: 8
    • DAT /TAPE 1, TAPE 2, ADAPTER1/ TAPE3, ADAPTER 2, CD (gold plated), TUNER, LINE, PHONO (gold plated)
  • Number of outputs: 2
    • TAPE 1/CD-R/MD, TAPE 2 MONITOR


Specifications

  • Continuous power (at distortion)
    • 8 Ohm: 2x 95 W / 0,003%
    • 4 Ohm: 2x 140 W

2 Ohm: 2x 200 W

  • Dynamic power
    • 8 Ohm: 2x 150 W
    • 4 Ohm: 2x 200 W
    • 2 Ohm: 2x 300 W
  • Total harmonic distortion: 0.003% (20Hz - 20 kHz, 95W, 8 Ohm)
  • Frequency response: 1 Hz - 150 kHz 0 dB- 3 dB
  • Signal-to-noise ratio: 108 dB


Special Features

  • Recording selector switch
  • Speaker pairs and headphones are switched via relays
  • Metal front panel
  • Direct - switch to bypass the tone control stage
  • Phono - input with choice of MM/MM subsonic filter/MC/MC subsonic filter
  • switchable phono preamplifier
  • Separable pre- and power amplifier
  • connections for 2 speaker pairs A+B
  • shortened signal paths for the cleanest sound imaginable
  • spatially separated stages: Reduced interference
  • resonance-damping design: honeycomb-reinforced frame, heat sink and dampers to eliminate microphonic effects
  • powerful, low-impedance power supply: 2 power transformers and finned solid cast enclosure ensure high capacitance
  • good resonance damping and clean magnetic shielding
  • "Non-Switching" Type III: elimination of switching distortion and improved stability at low impedances
  • phono equalizer (can be switched off) with high gain; suitable for MM and MC systems


Remarks[edit]




Pictures[edit]

  • [[Picture: Pioneer A-757 MK II

Pioneer A-757 Mark II.jpg


Reviews[edit]

Links[edit]

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