Sansui AU 777A (1967-1969)

Market Value: $400-$800 depending on condition and restoration status
Collectibility Rating: 8/10

Name: Sansui AU 777A
Brand: Sansui

Specifications

Feature	Specification
Year of Production	1967-1969
Power Specifications	32W per channel (8Ω, RMS)
Impedance	4-16Ω
Sensitivity	Unknown
Key Features	Dual power transformers, direct-coupled OCL output stage, Sansui's first use of diamond differential circuitry, separate power supplies for each channel, phono stage with MM/MC capability, tone controls with defeat switch

Historical Significance

First amplifier to use Sansui's diamond differential circuit, setting the foundation for their future designs; considered one of the first true high-fidelity integrated amplifiers; marked Sansui's transition from tube to solid-state excellence

Sound Signature

Warm, detailed, and musical with excellent midrange clarity; smooth highs and tight bass; known for its tube-like character despite being solid-state

Maintenance and Restoration Tips

Aging electrolytic capacitors, noisy transistors (especially 2SC458), potentiometer cleaning, occasional relay issues, original fuse holders may become brittle