The Sansui AU-5900 is an integrated amplifier that was first introduced in the 1970s. It is part of the AU series from Sansui, which gained a reputation for delivering powerful audio performance. The AU-5900 features a sleek design with a brushed aluminum front panel, an easy-to-read power meter, and various controls for adjusting bass, treble, and balance. This model combines both solid state technology along with a low feedback circuit design, which contributes to its sound quality. Specifications include a power output of approximately 45 watts per channel into 8 ohms, frequency response ranging from 10 Hz to 70 kHz, and a total harmonic distortion rating of around 0.1%. The amplifier is equipped with multiple input options, including phono, tape, Aux, and FM, allowing for versatility in audio sources. Its headphone output is a useful feature for private listening. The build quality is robust, and the components used in its construction are of high quality, aimed at ensuring longevity and reliable performance.
