I also recommend using a PS PC with your Duet. I use the PS Lab II PC to connect my Duet to the wall outlet. The new PS cables will undoubtedly be good, but if you want to save some cash, check out some of the older models - like the Lab II PC, or the "xStream" series.
Suggestions for a PC on my PS Audio Duet
I have a ATI multi channel amp that I plug directly into a dedicated 20 amp service. I have a Jolida 100 cdp (tubes), ADA prosessor, pioneer Blu-ray that are connected to my PS Audio Duet. What would the people of this forum suggest as a reasonably priced PC. Also any suggestions on a PC on my ATI multi channel which is plugged into an PS Audio Soloist. I listen to jazz on mostly 2 channel. Any input would be greatly appreciated.