MIT Z Center vs PS Audio Ultimate Outlet?

I currently have an MIT Z Center which I have my preamp and DAC, and plugged into. Would like to know if anyone has done a comparison of performance with the PS Audio Ultimate outlet and the MIT. The MIT takes a component shelf and it would be nice to improve sound and eliminate a shelf on the component rack. Would there be problems using a digital component and preamp using the same PS audio outlet? I currently have an isolated outlet on the MIT for digital components. Comments would be appreciated.