Features DI08 DIGITAL I/O UNIT Rack-mount unit capable of accommodating up to 8 mini-YGDAI digital I/O cards The DIO8 is also compatible with the Apogee AP8 Series of 24-bit analog cards. Description Product Description The DIO8 outputs and inputs digital signals (such as ADAT, TASCAM, and AES/EBU) as well as analog signals to and from the DSP1D/DSP1D-EX engine controlled via the CS1D control surface. Up to eight digital I/O cards and analog I/O cards can be installed on each DIO8.