The Sansui AU-D 507 X is an integrated DC amplifier that was released in 1984. It utilizes a twin diamond balanced drive amplifier system, experiencing effective output of 90W per channel at 6 ohms and 80W per channel at 8 ohms across a frequency range of 10 Hz to 20 kHz. It is also capable of delivering a peak output of 105W per channel at 4 ohms and 95W per channel at 6 ohms at 1 kHz, with total harmonic distortion factors as low as 0.003% under specific conditions. This amplifier features fully balanced circuitry, ensuring excellent performance without interference from ground noise. The equalizer section boasts a precision design with a minimal RIAA deviation of ± 0.2 dB from 20 Hz to 300 kHz, reinforcing its capability in producing accurate sound reproduction. With a damping factor of 80 and an output bandwidth extending from 5 Hz to 70 kHz, the AU-D 507 X is engineered for broad frequency response.
