一顆做數位到類比轉換，另一顆則是類比到數位轉換，分開在兩個版子上進行?
http://www.custompcreview.com/revie...r-review/17756/

Digital-to-Analog Convertor
(DAC) – Main board
TI Burr-Brown PCM1794 (127dB DAC, 24bit / 192kHz) for Front L / R
TI Burr-Brown PCM1798 (123dB DAC, 24bit / 192kHz) for Rear / C / Sub

Analog-to-Digital Convertor
(ADC) – DBPro board
TI Burr-Brown PCM4220 (Dynamic Range 123dB)