Thanks for all the replies. There is a variety of things that seem to work well. Victor at BAT is very reluctant to even broach the subject of aftermarket power cords. The PS Audio stuff seems to work but needs to be at least the 600 model. The magical Powersnakes seem to work their black magic here as well.
PC s and/or conditioners etc for BAT
Curious as to what BAT owners may be using if they are using power cords, conditioners, regenerators, etc. BAT is extrememly cautious and recommends nothing. But I know some people experiment. I have a VK-30SE, D5SE, and VK-60 and use a mix of BAT stock cords and Cardas.