Pioneer M-25

Data[edit]

General

  • Manufacturer: Pioneer
  • Model: M-25
  • Model range: Series 20
  • Type: Class AB power amplifier
  • Years of manufacture: 1976 - 1981
  • Made in: Japan
  • Color: Metal Silver / Black
  • Power consumption: 800 W
  • Dimensions: 420 x 153 x 370 mm (WxHxD)
  • Weight: 22.5 kg
  • Original price approx.: 200'000 Yen (Japan 1980), 3'000 DM


Connections

  • Number of inputs:
    • Input sensitivity: 1V/50kOhm.
  • Number of outputs:
    • 1 loudspeaker pair


Technical Data

  • Continuous power Class AB (Class A operation up to 3W)
    • 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)
  • Attenuation factor: 100 / 8 Ohm
  • 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


Special Features

  • Pioneer M-25 Class A power amplifier in "open design".


Notes[edit]


Pictures[edit]

  • Excerpt from Japan advertisement: Pioneer M-25

Pioneer M-25-1977.jpg


Reports[edit]


Links[edit]

  • External link: "Audio Database, Japan" website: [2]