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Pioneer C-21

Stereo Pre-Amplifier (1977-80)

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Pioneer C-21


The C-21 is a stereo preamplifier composed of an equaliser amplifier and a flat amplifier and designed to display the ultimate in sound quality.

It is a streamlined model and so does not feature a tone control circuit or accessory circuitry.


Frequency response: 10Hz to 100kHz

Total harmonic distortion: 0.005%

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 80dB (MM), 100dB (line)

Output: 150mV (line), 1V (Pre out)

Semiconductors: 36 x transistors, 47 x diodes

Dimensions: 420 x 81 x 357mm

Weight: 6.3kg

Accessories: connecting cord and hex wrench


schematics   English -

instruction/owners manual   English -

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Reviewed Feb 26th, 2015 by hjackxiao

Under its humble and simplified appearance, what a superb design and engineered pre amp, and one that will run against any other pre amp and holds its own, no matter what price and era!
All and all, such a faithful and wonderful sounding pre amp!



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