The Audio Refinement Complete improves considerably with a better aftermarket power cord. I have had one in my bedroom system for 3 years now. Depending on your associated components and taste, the best for me have been DCCA Powerwave, Shunyata Sidewinder Gold, and Virtual Dynamics David. Each of these provide a distinctive improvement in most parameters,i.e. dynamics, soundstage, transparency, and focus.Also,all these cords can be found used here on Audiogon from time to time for @$200.00(+or-). Good luck.