The only thing I know is following:
Following the tremendous success of the 306 line of CD players, Cary Audio Designs new CD 306 SACD Professional Version includes the latest in SACD and HDCD playback technology. The new CD 306 SACD Professional Version features a new servo board design with internal components tested to 105° C. The PMD-200 filter has now been replaced with a high quality Burr Brown filter chipset. HDCD decoding is accomplished with the absolute latest software available. Larger, multiple power transformers along with higher current regulators add up to stronger, higher current regulated power supplies. The internal copper chassis along with a new vented top cover add strength, durability and incredible transport shielding to the CD 306 SACD Professional Version. For even greater resolution when playing back SACDs, the internal wordclock frequency has been raised from 11.2896 MHz to 22.5792 MHz. Completing the list is a new aluminum loader tray that adds elegance and greater disc handling care. The new CD 306 SACD Professional Version continues on with 8 Burr Brown 1792u DAC chips running in a true balanced parallel, extremely low jitter digital to analog converter. The digital to analog conversion section within the new CD 306 SACD Professional Version may still be used as a stand alone DAC with three separate digital inputs available that are selectable on the front panel.
Following the tremendous success of the 306 line of CD players, Cary Audio Designs new CD 306 SACD Professional Version includes the latest in SACD and HDCD playback technology. The new CD 306 SACD Professional Version features a new servo board design with internal components tested to 105° C. The PMD-200 filter has now been replaced with a high quality Burr Brown filter chipset. HDCD decoding is accomplished with the absolute latest software available. Larger, multiple power transformers along with higher current regulators add up to stronger, higher current regulated power supplies. The internal copper chassis along with a new vented top cover add strength, durability and incredible transport shielding to the CD 306 SACD Professional Version. For even greater resolution when playing back SACDs, the internal wordclock frequency has been raised from 11.2896 MHz to 22.5792 MHz. Completing the list is a new aluminum loader tray that adds elegance and greater disc handling care. The new CD 306 SACD Professional Version continues on with 8 Burr Brown 1792u DAC chips running in a true balanced parallel, extremely low jitter digital to analog converter. The digital to analog conversion section within the new CD 306 SACD Professional Version may still be used as a stand alone DAC with three separate digital inputs available that are selectable on the front panel.