Pioneer A-27

Data

General

  • Manufacturer: Pioneer
  • Model: A-27
  • Model range: Series 20
  • Type: Class AB integrated amplifier
  • Years of manufacture: 1978 - 1981
  • Manufactured in: Japan
  • Color: Metal Silver / Black
  • Power consumption: 980 W
  • Dimensions: 454 x 167 x 468 mm (WxHxD)
  • Weight: 24.7 kg
  • Original price approx.: 3'200 DM


Connections

  • Number of inputs:
    • Phono 1 MM: 2.5mV/100 Ohm, 10 kOhm, 25 kOhm, 50 kOhm, 100 kOhm (selectable 100pF, 200pF, 300pF, 400pF, 500pF), max. 300 mV.
    • Phono 2 MC: 0.250mV/100 Ohm, max. 30 mV
    • Tuner, AUX: 150mV / 50kOhm
    • Tape Play 1, 2: 150mV / 50kOhm
    • Main In:
  • Number of Outputs:
    • Tape Rec 1, 2: 150mV / 1kOhm.
    • Pre-Out:
      • THD (5Hz - 30kHz) 0.005% at 1V
      • THD (5Hz - 30kHz) 0.01% at 15V)
    • 2 pairs of speakers
    • Headphones


Technical Data

  • continuous power Class AB (Class A operation up to 30W)
    • 8 Ohm: 2 x 120W (5Hz - 30kHz, THD 0.01%)
    • 4 Ohm: 2 x 120W (5Hz - 20kHz, THD 0.02%)
  • Dynamic power
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: 0.01%
    • THD : < 0.01% (10Hz...30kHz, 8 Ohm, nominal power)
      • < 0.01% (10Hz...30kHz, 8 Ohm, 60W)
      • < 0,007% (10Hz...30kHz, 8 Ohm, 1W)
  • Dämpfungsfaktor: 70 (5Hz - 30kHz, 8ohm)
  • Frequenzgang: 5 Hz - 200 kHz, +0 -1dB (bei 1W)
  • Leistungsbandbreite: 5 Hz - 100 kHz (THD 0.05%)
  • Signalrauschabstand: 120 dB
  • Kanaltrennung:
    • 1kHz: 105 dB
    • 100kHz: 70 dB
  • Signalrauschabstand:
    • >91dB (Phono MM)
    • > 80dB (Phono MC)
    • > 100dB (Tuner, Tape, Aux).
  • Tone control:
    • Bass 50 Hz: ± 4 dB

Bass 100 Hz: ± 5 dB Tweeter 10 kHz: ± 5 dB Tweeter 20 kHz: ± 4 dB

  • Low Filter: 15Hz, 6 dB/octave, 12dB/octave
  • Muting: 0 dB, - 20 dB


Special Features Pioneer A-27 Class AB integrated amplifier: For many the first real high-end amplifier.

  • Pre- and power amplifier can be separated

Remarks


Pictures

  • Image: Pioneer A-27

Pioneer A-27-3.jpg


  • Picture: Pioneer A-27 backside

Pioneer A-27-5.jpg


Reviews

  • Review at Good Old Hifi: [1]
  • Report at "Mackers": [2]


Links

  • External link: "The Vintage Knob" website: [3]
  • External link: "Audio Database, Japan" website: [4]</0,007%>