The Sansui AU-555A is a solid-state integrated amplifier that delivers 25 watts per channel into 8 ohms, with a total music power output of up to 60 watts at 4 ohms. It was introduced in the medium power price range and emulates many features from Sansui's larger AU series. The design incorporates SEPP-ITL-OTL circuitry, which contributes to its low distortion factor of only 0.5%. It has a wide power bandwidth, ranging from 20 to 30,000 Hz, and features independent preamplifier and power amplifier sections. Adjustability options include a switch for high and low damping factors (high: 45, low: 12), along with a four-position speaker selector switch and multiple input/output options for flexibility. The amplifier includes tone controls for treble and bass, a loudness control, and a tape monitor function for recording use. Its aesthetic features a walnut cabinet and a sleek black faceplate, enhancing its visual appeal. Users have noted its warm, rich sound that handles various music genres exceptionally well, particularly excelling with vocal performances and classic rock.
