Apogee Symphony I/O Module 8x8, INPUTS: Analog IN: 8 balanced inputs on 1 DSUB 25-pin connector, *AES-EBU IN: 8 inputs on 1 DSUB 25-pin connector (192k single wide compatible), *Optical IN: Supports ADAT, SMUX & S/PDIF, ADAT: 8 channels 44.1-48 kHz, SMUX: 8 channels 88.2-96 kHz, S/PDIF: 2 channels, up to 96 kHz, Coax IN: 2 channels of S/PDIF, up to 192 kHz, OUTPUTS: Analog OUT: 8 balanced outputs on 1 DSUB 25-pin connector, *AES-EBU OUT: 8 outputs on 1 DSUB 25-pin connector (192k single wide compatible), *Optical OUT: Supports ADAT, SMUX & S/PDIF, ADAT: 8 channels 44.1-48 kHz, SMUX: 8 channels 88.2-96 kHz, S/PDIF: 2 channels, up to 96 kHz, Coax OUT: 2 channels of S/PDIF, up to 192 kHz, *Dig I/O hardware switch selects AES or Optical digital I/O format