I would say that it is worth a shot... I had to write a reply when I saw that you are using Ensemble. About 2 yrs. ago, I replaced my Ensemble Mega PC's with power cables from Virtual Image, the Sledgehammer. I bought the original Sledgehammer and it made the Ensemble cables sound extremely muddy in the lower octives, choked off mids, and lacking in extension in the upper octives. Since that time the Sledgehammer has been revised/upgraded and Virtual Image has introduced another power cable called the Pile Driver. The Pile Driver is a sizable step-up from the Sledgehammer and costs more too. My suggestion to you would be to contact V.I. and try their power cables, they have a 30-day trial policy on standard cables, (i.e. 6 feet long with a 15 amp IEC connector). If you are interested, you can e-mail Al, owner of Virtual Image, at virtualimage@juno.com.
Also, a little of topic, V.I. has come out with some killer interconnects, easily beat out the Straightwire Crescendo's that I had been using.
If I can be of any help, please feel free to e-mail me at any time. Zach