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AmplifiersPre-AmplifiersPhono Pre-AmpsDiscontinued
Estimated price (community-sourced)
$700
Around — community and catalog average, updates slowly
About the C-4
The Yamaha C-4 is a vintage stereo control preamplifier, also described as a control amplifier, introduced around 1978. It provides two MM phono inputs and one MC phono input, with selectable cartridge loading for the MM inputs, plus tuner, auxiliary, and tape connections. Its features include a built-in MC head amplifier, tone controls with adjustable turnover frequencies, tone bypass, filters, a headphone amplifier, and two preamplifier outputs. The phono equalizer uses a low-noise circuit design intended to reduce noise when matching a cartridge.
Specifications
Type: Stereo control amplifier / preamplifier
Inputs: Phono MM ×2, Phono MC ×1, tuner, AUX, tape
MM cartridge load resistance: 100 Ω, 33 kΩ, 47 kΩ, 68 kΩ, 100 kΩ
MM cartridge load capacitance: 100 pF, 150 pF, 220 pF, 330 pF, 470 pF
Frequency response: 5 Hz–100 kHz
Total harmonic distortion: 0.0035%
Signal-to-noise ratio: 77 dB (MC), 85 dB (MM), 100 dB (line)
Outputs: Pre-out ×2 (2 V rated, 10 V maximum); record out ×2
Dimensions (W × H × D): 435 × 116 × 376 mm
Weight: approximately 8.5–8.6 kg
Power consumption: approximately 40–50 W