The Sansui AU-555 is an integrated amplifier recognized for its impressive sound quality and efficient design. It features an all silicon solid state construction, allowing it to deliver a total music power output of 60 watts across a frequency range of 20 to 30,000 Hz with a distortion factor of only 0.5%. This makes it suitable for a variety of audio setups, especially paired with sensitive speakers. The amplifier has a professional arrangement of controls housed in a sleek black control panel, which adds to its modern appearance. Additional features include a separate pre- and main amplifier section designed for independent use, adjustable speaker damping factors, a 4-position speaker selector switch, and a variety of inputs and outputs for connecting multiple audio sources. The AU-555 is often praised for its warm, rich sound, making it ideal for diverse music genres, especially vocals and classic rock. Its stylish walnut cabinet gives it a vintage charm, making it a desirable component for audiophiles and collectors alike.