I prefer a quality insulated cable. I couldn't hurt. Just don't spend a ridiculous amount.
12 AWG Mains Power Cable From Wall To Power Conditioner Sufficient?
Is a 12 AWG mains power cable adequate for use between the wall outlet and power conditioner? Low-powered components such as streamer and DAC as well as a subwoofer will be connected to the power conditioner. The integrated amp will go directly to another wall outlet.