DU-80 is a top-end model that has been designed to reproduce high sound quality through the elimination of any compromise. We have introduced a peel coat gold-plating base plate from which resist film was thoroughly eliminated into an audio circuit, and have brought in our traditional high sound quality elements in full scale including a high-capacity audio-specific custom resistor. The 2-channel output is an ideal specification where high-performance fluency DAC is used in the monaural configuration (DSD direct processing for SACD). We have newly developed a tough mechanism support block capable of controlling internal airflow with body design featuring thorough vibration suppression and high rigidity. DU-80 is designed to have no space between the surface of circuits and the surface of the structure at all, and has achieved luxurious high sound quality that is far superior to a standalone CD player.