The Apogee Symphony I/O Mk II 8×8 Module is a versatile expansion card designed for the Symphony I/O Mk II chassis, offering a total of 16 channels of input and output. It provides 8 channels of balanced analog I/O via DB25 connectors and 8 channels of digital I/O through AES/EBU or optical formats, including ADAT, SMUX, and S/PDIF. The module features Apogee’s advanced dual-sum A/D conversion for enhanced dynamic range and ultra-low latency performance. It is ideal for professional recording studios and live sound applications requiring high-quality, high-channel-count audio interfaces.