Pioneer C-21

Data

General

• Manufacturer: Pioneer
• Model: C-21
• Model range: Series 20
• Type: Preamplifier
• Years of manufacture: 1976 - 1981
• Made in: Japan
• Color: Metal Silver
• Power consumption: 10 W
• Dimensions: 420 × 81 × 357 mm (WxHxD)
• Weight: 6.3 kg
• Original price approx.: 1'000 DM (1978)

Connections

• Number of inputs:
  • Phono MM: 2.5 mV / 100kOhm.
    • Phono input resistance switchable: 100 Ohm / 10k / 25k / 50k / 75k / 100kOhm
    • Phono input capacitance switchable: 100 / 150 / 200 / 300 / 400 / 500pF
    • Phono max. voltage: 300mV (0,01% THD, 1Khz)
  • AUX 1, 2: 150mV / 50kOhm
  • Tape Play: 150mV / 50kOhm
• Number of outputs:
  • Tape Rec: 150mV / 1kOhm
  • Pre-Out:
    • 1V / 450 Ohm (50kOhm, nominal).
    • 20V / 150 Ohm (50kOhm, max.)

Technical Data

• Frequency response:
  • Phono: 20 Hz - 20,000 Hz ± 0.2 dB.
  • AUX 1: 10 Hz - 100,000 Hz + 0 -0.2 dB
  • AUX 2: 3 Hz - 300,000 Hz + 0 -1.0 dB

Distortion factor:

• • phono: 0.006 %

AUX: 0.005 % * SIGNAL TO NOISE RATIO

• Signal-to-noise ratio:
  • > 80dB (phono MM)
  • > 100dB (tuner, tape, aux)
• stereo channel separation:
• Tone control: no
• Low Filter: 15 Hz (6 dB/octave)

Special Features

• Level control L + R

Remarks

• 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 C-21 Front

• Picture: Pioneer C-21 back

• 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]