Yamaha C-4 Preamplifier and M-4 Power Amplifier

• Overview – The Yamaha C-4 Preamplifier and M-4 Power Amplifier, released in 1979, combine a solid-state analogue preamplifier with a Class AB solid-state power amplifier, delivering vintage Japanese engineering and audiophile-grade performance.

• Reference Vintage Combination – Designed during Yamaha’s golden era, the Yamaha C-4 Preamplifier and M-4 Power Amplifier offer exceptional flexibility, precise signal control, and a highly musical presentation suitable for both vinyl and digital sources.

• Advanced Analogue Engineering – The Yamaha C-4 features extensive MM/MC phono adjustments, while the M-4 provides high-current amplification with Yamaha’s Auto Class A capability, delivering refined detail and excellent loudspeaker control.

• Specifications – M-4 rated at 120W per channel into 8 ohms and 170W into 4 ohms, Class AB with Auto Class A operation, frequency response 10Hz–100kHz, C-4 includes MM/MC phono stage, multiple impedance and capacitance settings.

• Dimensions – C-4 measures approximately 435 mm (W) × 72 mm (H) × 320 mm (D), while the M-4 measures approximately 435 mm (W) × 165 mm (H) × 385 mm (D).

• Weight – The C-4 weighs approximately 7.5 kg, while the M-4 weighs approximately 18 kg, reflecting robust construction, substantial transformers, and premium analogue circuitry.