Krell FPB amps & Pure Note Sigma power cords

Hello.

I was amazed at the difference a Pure Note Sigma P.C. made when I used it with my Krell KRC-HR pre-amp & was wondering if one can get similar improvements by using a Pure Note with my FPB300c with its built in power cord. Has anyone tried this before? Obviously with FPB300c's built in original power cord, one has to connect to the Pure Note via a mains distribution block or maybe try hard-wiring the Pure Note direct onto the built in cord?

Any advice will be much appreciated.

Many thanks.