The Sansui AU-α 507 NRA is a solid-state integrated amplifier that was part of Sansui's AU series. This model features a robust construction designed to deliver high-quality audio performance with a focus on low distortion and dynamic range. It typically has a power output rated around 100 watts per channel into 8 ohms, allowing it to drive a wide variety of speakers effectively. This amplifier often incorporates a dual power supply design, which helps ensure stable operation even during demanding playback scenarios. In terms of connectivity, the AU-α 507 NRA usually includes multiple input options for different audio sources, including phono, line, and tape inputs. Tone controls, as well as a loudness switch, provide users the ability to customize their listening experience. The unit is also often equipped with protection circuits to safeguard against output overload and short-circuit conditions, enhancing its longevity and reliability. The aesthetic design reflects a classic vintage style, often featuring a brushed aluminum front panel and traditional analog meters for level display. Overall, the AU-α 507 NRA is appreciated by audiophiles for its sound quality and versatile performance capabilities.
