Search around for Guido's comments regarding the PFC. He prefers the Capri without PFC. Since it's a low current device, that's very understandable, but YMMV depending on the quality of your mains' power and the load presented by other devices in the same circuit. Guido's JRDG 312 amp has PFC, so you know it's presenting a nice sine-wave like demand to his mains, but you may not have that case in your system. Everyone that I know that combined the Capri with amps without onboard PFC, like the Rowland 501s, noted a very major gain by adding PFC to both, which the PC1 is set up to do with Rowland products.
That 385v is after PFC in DC mode. In AC mode (w/o PFC) you could hear some voltage sensitivity. Like I said earlier, a lot will depend on the basic stability of your mains along with whatever your amps and other components may be doing to contaminate.
All that said, assuming a relatively average environment, I think you'll be darn happy with the Capri without PFC, particularly if you use balanced at every possible point.
Dave