Sansui AU 505 (1971-1973)
Specifications
| Feature | Specification |
| Year of Production | 1971-1973 |
| Power Specifications | 22W per channel (8Ω, RMS), stereo |
| Impedance | 4-16Ω |
| Sensitivity | Unknown |
| Key Features | Dual power supply, DC-coupled amplifier circuit, Sansui's Diamond Differential circuit, phono stage with MM/MC support, tone controls, speaker selector, pre-out/main-in jacks |
Historical Significance
Part of Sansui's highly regarded '70s integrated amplifier series, known for exceptional build quality and sound at its price point. Represents Sansui's engineering excellence during the golden age of hi-fi.
Sound Signature
Warm, smooth, and detailed with excellent midrange clarity. Good bass control and a non-fatiguing, musical presentation. Often described as 'tube-like' in character.
Maintenance and Restoration Tips
Aging electrolytic capacitors, dirty controls and switches, occasional transistor failure in driver stages, lamp replacement for dial lights
Collectibility and Market Value
- Market Value: $300-$600 depending on condition and restoration status
- Collectibility Rating: 7/10
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Service Manuals & Schematics
- Manual (1973) — archive.org
- Manual — archive.org
Related Models
- Sansui PM C100 (Unknown)
- Sansui 6060 (1975-1977)
- Sansui 551 (1973-1975)
- Sansui AU 555 (1968-1971)
- Sansui CA 3000 (1974-1977)
- Akai AM-2850 (1975)
- Akai AP-206 (1975)
- Nakamichi BX-1 (1985)
- Acoustic Research research-ar-17 (1978)
- Acoustic Research AR-19 (1994)