Data sheets of these in .pdf format can be downloaded in the files section of Super DAC User Group.
http://groups.yahoo.com/group/M-Audio_SuperDAC_2496/files/DataSheets/
CS8413 and CS8414 96kHz Audio Receiver Chip (38 pages)
AK4393 Multi-Bit 96kHz 24-Bit DAC (22 pages)
http://groups.yahoo.com/group/M-Audio_SuperDAC_2496/files/DataSheets/
CS8413 and CS8414 96kHz Audio Receiver Chip (38 pages)
AK4393 Multi-Bit 96kHz 24-Bit DAC (22 pages)