The Sansui AU-D9 is an integrated stereo amplifier that was introduced in the late 1970s. It features a robust build quality and an elegant design typical of the era. This amplifier is notable for its high power output, providing up to 120 watts per channel at 8 ohms, and can deliver up to 160 watts per channel at 4 ohms. It utilizes a differential amplifier circuit, which contributes to its low distortion and high fidelity sound reproduction. The AU-D9 also includes a wide range of input options including phono, tape, and auxiliary inputs and is equipped with a high-quality phono stage compatible with both moving magnet and moving coil cartridges. The user interface is straightforward, with large, easy-to-read knobs and switches for fine-tuning volume, balance, tone controls, and input selection. Additionally, the amplifier features a signal path free from unnecessary circuitry and is equipped with a protective circuitry to prevent speaker damage during operation. Overall, the Sansui AU-D9 is appreciated by audiophiles for its sonic performance and reliable operation, making it a favored choice among vintage audio enthusiasts.
