The PMA-520AE integrated amplifier features a High-Current Single-Push-Pull circuitry to achieve both strength and detail in music playback, which is Denon’s focus for its pure audio amplifiers. The relay switch used for CD and Phono input contains an inert gas to prevent the occurrence of noise that can negatively affect the signal. In addition, durable parts strictly selected for their contribution to sound quality, such as the large-capacity block capacitor for the power supply circuit, high-quality sound carbon resistors, and high-quality sound capacitors, are also used. Each individual part employed in configuring the circuits reflects this emphasis on high fidelity.
To faithfully reproduce the original sound, the DCD-520AE is endowed with a wide range of audio technology that Denon has developed and refined over the years. For a sound that surpasses the quality expected in its class, Denon engineers have carefully selected parts for the audio section, the power unit and other areas on the basis of their contribution to high sound quality. The patterns for the digital circuits have been specially designed to provide maximum protection from unwanted radiation and achieve low impedance. Denon engineers used rigorous listening tests to select the DCD-520AE’s high-precision 32-bit/192 kHz D/A converter.