The GCD-750 starts with digital processing circuitry first developed for ADCOM's widely praised GDA-600 and GDA-700 stand alone D/A converters. The acclaimed Pacific Microsonics PMD-100 oversampling digital filter/HDCD decoder then processes the digital data. After oversampling and high-speed processing, the data stream feeds two differential pairs of 20-bit linear Burr-Brown D/A converters.