Go to HD and get some 10AWG Carol cord. It's a twisted three conductor stranded copper heavy jacket cord. While you're there, get a nice hospital AC plug (they even have right angle ones at HD!) You'll have to order an IEC plug for the other end from one of the many, many sources online, unless you have a good electrical parts house in your town. Put it all together and your in biz for under $50.
My point is, that for amplifiers, ANY AMPLIFIERS, what you want is BIG conductors for FAST energy transfer. I'd bet the cord I just described (for use on an amp, that is) against ANY megabuck power cord with only 16, 14, or even 12 AWG conductors. If you want something better than what I described, consider something like a Purist Dominus, Virtual Dynamics Genesis (6 AWG!!), etc, and prepare to spend north of three grand.
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