Description
? 1. Full Description with Technical Points
The Sansui AU-X11 is a flagship integrated amplifier released in the early 1980s, representing the pinnacle of Sansui’s engineering expertise during the brand’s golden era. Designed for audiophiles and serious music enthusiasts, the AU-X11 features cutting-edge technology, exceptional power delivery, and precise tonal balance.
⚙️ Technical Highlights & Features
- Power Output: 160 watts per channel into 8 ohms (both channels driven, 20Hz-20kHz)
- Frequency Response: 5Hz to 100kHz (-3dB) for ultra-wide bandwidth reproduction
- Total Harmonic Distortion (THD): An incredibly low 0.003% (at rated power)
- Damping Factor: 120 at 8 ohms, ensuring excellent speaker control and deep, tight bass response
- Phono Stage: Supports both Moving Magnet (MM) and Moving Coil (MC) cartridges, with selectable impedance for precise matching
- Signal-to-Noise Ratio:
- Phono MM: 90 dB
- Phono MC: 75 dB
- Line Input: 110 dB
- Super Feedforward System: A proprietary Sansui technology that predicts and corrects distortion in real-time before it reaches the output stage, ensuring the cleanest possible audio signal
- Dual Mono Design: Independent power supplies and amplification circuits for left and right channels, greatly improving stereo separation and imaging
- Massive Toroidal Transformer: Provides clean, high-current power with minimal noise, supporting high-dynamic-range playback
- Construction: Premium-grade components, including low-noise resistors, custom capacitors, and oversized heat sinks for thermal stability and long-term reliability
- Inputs & Outputs: Multiple line-level inputs, two phono inputs, and both fixed and variable outputs for flexible system integration
- Tone Controls: Precision bass, midrange, and treble adjustments, along with a subsonic filter and tone defeat option for pure signal path playback
? Playing & Functional Condition
- Tested and working perfectly across all inputs and outputs
- Phono stage delivers clear, low-noise performance with excellent channel separation
- Tone controls, filters, and switches operate without crackling or dropouts
- Power output is strong, with no distortion even at high volumes
- Channel balance is perfect, with no drift or imbalance
