Sansui AU 519 (1978-1980)
Specifications
| Feature | Specification |
| Year of Production | 1978-1980 |
| Power Specifications | 90W per channel into 8Ω (stereo), 110W per channel into 4Ω |
| Impedance | 4-16Ω |
| Sensitivity | 150mV (line), 2.5mV (MM phono) |
| Key Features | Dual power supply (separate transformers for each channel), DC amplification, Sansui's Diamond Differential circuit, direct-coupled OCL output, tone defeat switch, loudness control, pre-out/main-in jacks |
Historical Significance
Part of Sansui's highly regarded 'X-Balanced' series, representing their transition to DC-coupled designs and advanced engineering. Known for exceptional build quality and innovative power supply design that reduces crosstalk between channels.
Sound Signature
Clean, detailed, and neutral with excellent transient response. Tight bass control, transparent midrange, and extended highs. Less colored than earlier Sansui models but still musical.
Maintenance and Restoration Tips
DC offset adjustment required (trimmer pots on driver boards), aging electrolytic capacitors (particularly in power supply), noisy switches and potentiometers, thermal drift in early production units
Collectibility and Market Value
- Market Value: $400-$800 depending on condition and restoration status
- Collectibility Rating: 8/10
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