Try a Silent Source power cord. A friend of mine uses it on his Dart, and the reviewer at 6moons used it on his Dart with great success as well. I have several Silent Source PCs and keep them around as I always find them to be a great cord. I'll probably move my Jena Labs Fundamentals to my Evolution Acoustics MM3 speakers and use the Silent Source on my Dart and digital for the time being.
Also, if it is your price range, check out the VH Audio AirSine.
Also, if it is your price range, check out the VH Audio AirSine.