Sansui AU 666 (1968-1970)
Specifications
| Feature | Specification |
| Year of Production | 1968-1970 |
| Power Specifications | 32W per channel (8Ω), stereo |
| Impedance | 4-16Ω |
| Sensitivity | Unknown |
| Key Features | Dual power supply, direct-coupled OCL output, Sansui's unique 'Diamond Differential' circuit, phono stage with MC/MM compatibility, tone controls, loudness switch, pre-out/main-in jacks |
Historical Significance
Part of Sansui's highly regarded 'x' series, representing their transition to solid-state excellence. Known for exceptional build quality and innovative circuitry that set standards for Japanese hi-fi amplifiers in the late 1960s.
Sound Signature
Warm, detailed, and musical with excellent midrange clarity. Smooth highs, tight bass response, and a natural, engaging presentation that combines tube-like warmth with solid-state control.
Maintenance and Restoration Tips
Aging electrolytic capacitors, dirty switches and potentiometers, occasional transistor failure in driver stages, bulb replacement for indicators, potential DC offset issues requiring adjustment
Collectibility and Market Value
- Market Value: $400-$800 depending on condition and restoration status
- Collectibility Rating: 8/10
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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)