The Sansui AU-7900 is a solid-state integrated amplifier that was produced during the 1970s and is part of Sansui's AU series. It features a classic design with a focus on delivering high-quality audio performance. The amplifier is equipped with a dual power supply and uses a complementary push-pull output stage, which contributes to its ability to handle dynamic musical passages with precision. With a power output of approximately 100 watts per channel at 8 ohms, it can drive a range of speakers effectively. Additionally, the AU-7900 includes various audio controls, such as tone controls for bass and treble, as well as a loudness switch that emphasizes lower frequencies at low volumes. The construction is sturdy, often featuring a wooden veneer case and aluminum front panel, giving it a vintage aesthetic that appeals to audio enthusiasts. A noteworthy specification includes a total harmonic distortion (THD) rating of less than 0.1%, ensuring clear sound reproduction. The AU-7900 also has an intriguing input selection, accommodating various audio sources, including phono inputs for turntables.
