The DCD-820 Compact Disc Player incorporates DENON's Super Linear Converter which prevents deterioration of sound quality in PCM playback systems. This assures accurate reproduction of the digital signals recorded on compact discs no matter whether they are pure studio recordings or "live" performance recordings. All parts making up this CD player have selected with the greatest care in order to produce high quality realistic playback of the full musical content on compact discs. (1) Double Super Linear Converter The use of Denon's unique system and D/A converters with excellent resolution to prevent zero cross distortion, the main cause of reduced sound quality in the PCM playback system, make for sound field reproduction with rich musical expression. (2) High Performance Digital Filter The DCD-820 uses independent D/A converters for the left and right channels and an 8x oversampling high precision digital filter to bring out the best of the analog filter and offer clear, crisp sound. (3) Digital Output The data on the compact disc is output in digital format, so the music can be reproduced on an external digital processor or D/A unit. (4) Simple Playback of 8cm CD Singles 8cm CD singles can be played without using an adaptor.