Sansui AU 999 (1969-1971)
Specifications
| Feature | Specification |
| Year of Production | 1969-1971 |
| Power Specifications | 50W per channel (8Ω), stereo |
| Impedance | 4-16Ω |
| Sensitivity | Unknown |
| Key Features | Dual power supply, DC-coupled amplifier design, FET input stage, independent power meters, tone defeat switch, pre-out/main-in jacks |
Historical Significance
When Sansui dropped the AU 999 in 1969, they weren’t just releasing another amplifier—they were staking a claim at the pinnacle of Japanese audio engineering. This was the flagship of its era, a statement piece built before cost-cutting began reshaping the industry. Every circuit, every component screams precision, over-engineering, and a relentless pursuit of sonic purity. The AU 999 wasn’t just an integrated amp—it was a declaration of intent.
Sound Signature
Turn it on, cue up a well-recorded jazz trio or acoustic ballad, and you’ll hear why collectors still chase this beast. The midrange flows like warm honey—rich, textured, alive. Bass is tight and authoritative, never bloated. Highs shimmer without bite. There’s a fluidity, a musical ease that feels more tube-like than solid-state, yet with the control and speed modern transistors deliver. It doesn’t just play music—it breathes with it.
Maintenance and Restoration Tips
These amps are nearly half a century old. Expect dried-out capacitors, especially in the power supply and signal path. Pots and switches will likely need cleaning—or replacement if they’ve been neglected. The protection relays can stick or oxidize, cutting output or causing delays at startup. Watch for thermal drift in the DC offset; it’s normal to drift slightly, but excessive offset can damage speakers. And those cool analog power meters? Their bulbs burn out. Replacement LEDs work, but dimmable incandescent bulbs preserve the original glow.
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 2000A (1968-1970)
- Sansui 3000A (1968-1970)
- Sansui 5000X (1969-1971)
- Sansui 551 (1973-1975)
- Sansui 6060 (1975-1977)
- Quad 44/405-COMBINATION (1976)
- Braun AUDIO-1 (1965)
- Braun AUDIO-250 (1965)
- Braun AUDIO-310 (1965)
- Magnavox Component Systems (1972)