The Sansui AU-D 907 F Extra is a stereo integrated amplifier that was manufactured by the Japanese audio company Sansui. It features a high power output, which is complemented by its advanced circuitry design aimed at providing low distortion and high fidelity sound reproduction. The amplifier supports a variety of connectivity options and has a robust build quality. It typically includes multiple inputs for various audio sources and may also feature tone controls for sound customization. The design is characterized by a classic aesthetic often seen in high-end audio equipment of its era.