Pioneer A-27 specifications

Category : Integrated amplifier

Brand : Pioneer

General

Connections

Technical data

Special equipment

• Manufacturer: Pioneer
• Model: A-27
• Model series: Series 20 (model designation in Japan A-0012)
• Type: Class AB Integrated Amplifier
• Years of construction: 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
• Factory price approx.: 3.200,- DM

• 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: 0.25mV/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

• 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: 0.25mV/100 Ohm , max. 30 mV
• Tuner, AUX: 150mV /50kOhm
• Tape Play 1, 2: 150mV/50kOhm
• Main In:

• 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

• THD (5Hz - 30kHz) 0.005% at 1V
• THD (5Hz - 30kHz) 0.01% at 15V)

• 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&# 160;: < 0.01% (10Hz...30kHz, 8 ohm, rated power)
    • < 0.01% (10Hz...30kHz, 8 Ohm , 60W)
    • < 0.007% (10Hz...30kHz, 8 Ohm , 1W)
• Attenuation factor: 70 (5Hz - 30kHz, 8ohm)
• Frequency response: 5Hz - 200kHz, +0 -1dB (at 1W)
• Power bandwidth: 5Hz - 100kHz (THD 0.05%)
• Signal-to-noise ratio: 120 dB
• Channel separation:
  • 1kHz: 105 dB
  • 100kHz: 70 dB
• Signal-to-noise ratio:
  • > 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: 0dB, - 20dB

• 8 Ohm : 2 x 120W (5Hz - 30kHz, THD 0.01%)
• 4 Ohm : 2 x 120W (5Hz - 20kHz, THD 0.02%)

• 8 Ohm :
• 4 ohms:

• THD : < 0.01% (10Hz...30kHz, 8 ohm, rated power)
  • < 0.01% (10Hz...30kHz, 8 Ohm , 60W)
  • < 0.007% (10Hz...30kHz, 8 Ohm , 1W)

• < 0.01% (10Hz...30kHz, 8 Ohm , 60W)
• < 0.007% (10Hz...30kHz, 8 Ohm , 1W)

• 1kHz: 105 dB
• 100kHz: 70 dB

• > 91dB (Phono MM)
• > 80dB (Phono MC)
• > 100dB (tuner, tape, Aux)

• Bass 50 Hz: ± 4 dB
• Bass 100 Hz: ± 5 dB
• Tweeter 10 kHz: ± 5 dB
• Tweeter 20 kHz: ± 4 dB

• Pioneer A-27 Class AB Integrated amplifier: For many, the first real high-end amplifier
• Preamp and power amplifier separable

• Other models of the same series:
  • Pioneer C-21
  • Pioneer M-22
  • Pioneer D-23
  • Pioneer U-24
  • Pioneer M-25
  • Pioneer F-26
  • Pioneer A-27
  • Pioneer F-28
  • b3bff03f3bc92f18ad7f6544526a0da7

• Picture: Pioneer A-27 closed

• Picture: Pioneer A-27 open

• Picture: Pioneer A-0012 (Japan version of the A-27)

• Picture: Pioneer A-27 Back cover

• Report on "good-old-hifi": [1]

• Report on "Mackern": [2]

• External Link: Website "The Vintage Knob": [3]

• External Link: Website "Audio Database, Japan": [4]

Comment:

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