I need to replace my 10y old Mackie 12 ch 1202 mixer, and would like one with built in effects. Can someone explain what I would get from the S/PDIF digital output from the Alesis Multimix 12 channel FXD model? I am contemplating the 12 channel alesis with or without the digital output, versus the equivalent Mackie 12 channel with FX but no digital out.

THanks in advance for your help!