Pioneer M-22

Data

General

• Manufacturer: Pioneer
• Model: M-22
• Model series: Series 20
• Type: Class A power amplifier
• Years of manufacture: 1976 - 1981
• Made in: Japan
• Color: Metal Silver / Black
• Power consumption: 450 W
• Dimensions: 420 x 153 x 370 mm (WxHxD)
• Weight: 22 kg
• Original price approx.: 120'000 Yen (Japan 1976), 2'000 DM (1978)

Connections

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

Technical Data

• Continuous output Class A
  • 8 Ohm: 2 x 30W (20Hz...20Khz)
  • 4 Ohm: 2 x 30W (10Hz...30Khz)
• Dynamic power
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion : 0.01%.
  • THD : < 0.01% (10Hz...30Khz, 8 Ohm, nominal power)
    • < 0.005% (10Hz...30Khz, 8 Ohm, 15W)
    • < 0.005% (10Hz...30Khz, 8 Ohm, 1W)

IMD : < 0.01% (20Hz...20Khz, 8 Ohm)

• Attenuation factor: 60 / 8 Ohm
• Frequency response: 2 Hz - 150 kHz (+0 / -1dB)
• Power bandwidth: 10Hz - 30Khz (nominal power)
• Signal to noise ratio: 106 dB

Special Features

• Pioneer M-22 Class A power amplifier in "open design".

Notes

• Other models in 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
  • Pioneer PL-C 590

Pictures

• Image: Pioneer M-22

• Picture: Pioneer M-22 connector panel

• Picture: Pioneer M-22 back panel

• Brochure excerpt: Pioneer Combi Series 20 with C-21, M-22, D-23, U-24.

Reports

• Report on "Good Old Hifi": [1]

• Report on "Mackers": [2]

Links

• External link: "The Vintage Knob" website: [3]

• External link: "Audio Database, Japan" website: [4]