The ISA Two-Channel A/D Option Card from Focusrite is a stereo digital output card for the ISA 430 MkII channel strip and the ISA One. The stereo digital output formats include single/dual wire AES/EBU and S/PDIF from a 9-pin D-type connector, and the card operates at all sample rates up to 192 kHz. Appropriate cables for each format are required.
The ADAT (TOSLink) port is stereo and operates at 24-bit resolution with up to 96 kHz sampling rates. Wordclock I/O on BNC connectors extends the functionality of the expansion card.