Sansui G 5700 (1979-1981)

Specifications

Feature	Specification
Year of Production	1979-1981
Power Specifications	65W per channel (8Ω, 20Hz-20kHz, 0.05% THD), stereo
Impedance	4-16Ω
Sensitivity	Unknown
Key Features	Dual power supply, DC amplifier design, FET input stage, loudness control, high/low filters, tape monitor, phono input with MM/MC capability, quartz-locked PLL FM stereo tuner

Historical Significance

The Sansui G 5700 wasn’t just another receiver—it was a statement. Born in 1979, it stood at the forefront of Sansui’s elite G-series, a line that defined the golden era of high-fidelity analog receivers. When most brands were still refining basic stereo integration, Sansui was engineering precision. The G 5700 packed a quartz-locked PLL FM tuner, a rarity at the time, delivering rock-solid stereo reception with minimal drift. Combine that with its dual power supply and DC-coupled amplifier design, and you had a machine built not just to play music, but to reveal it.

Sound Signature

Expect clarity that cuts through the mix—transients snap with precision, bass stays tight and controlled, and the soundstage opens wide without losing focus. The G 5700 walks the line between neutrality and warmth, a hallmark of Sansui’s DC amplifier philosophy. It doesn’t color your music, but it doesn’t leave it cold, either. There’s a subtle richness in the midrange, a touch of analog bloom that makes vocals and acoustic instruments feel alive. Paired with the right speakers, it delivers a listening experience that’s both accurate and deeply engaging.

Maintenance and Restoration Tips

These receivers are tough, but time takes its toll. Electrolytic capacitors are the first to go—replacing them is almost mandatory for safe operation. Pots and switches develop crackles; a thorough cleaning with contact cleaner often brings them back to life. The front panel lamps dim or burn out over decades, so keep spares handy. Watch for sticky relays, especially in the tape monitor circuit, and don’t forget to refresh the thermal paste on the output transistors. A full recapping and service can transform a tired unit into a near-new performer.