Where to find Musical Fidelity power lead cables?

I have a Musical Fidelity X-PSU and not enough X-PONENT power lead cables to connect my units. Audio Advisor refered me to their NA distributor in Canada and they said they are not sure about getting them from the UK. Where should I turn to connect these units (can I get them at a Radio Shack,etc).
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I have a X-PSU and the power cable connectors look like a common AC adaptor type. I would think that radio shack would have the connectors. You might have to make the cable up yourself though.