————–[Metric Halo SHARC 80 bit]————–
Mobile I/O uses the Analog Devices SHARC 21065 DSP.
This is a 40 bit floating point processor which can also do 32 bit fixed point with 80 bit accumulation. For large MAC (multiply accumulate) loops, like summing in a large mixer, wide fixed point processing can provide better results, but for most applications, wide floating point is the way to go.
The nice thing about the SHARC is it gives you the freedom to use the best arithmetic system for a given processing application.