To achieve sound that exceeds the expected quality in its class, Denon engineers carefully selected the components for the audio section, power supply, and other areas, as they contribute to high sound quality. The designs for the digital circuits were specifically developed to provide maximum protection against unwanted radiation and to achieve low impedance. Denon engineers chose the high-precision 32-bit/192 kHz D/A converter of the DCD-520AE through rigorous listening tests. This converter, along with the audio circuit design developed by Denon over many years, masterfully reproduces the subtle nuances of music in the audio signal.