https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#WPC_DCS_Sound_Board
"The new chip amp operates at a lower voltage, and forced a corresponding change in the transformer voltage (12VAC + 12VAC). Therefore, DCS machines have different transformer winding to previous WPC machines."
So seems unlikely the DCS board will work since it required a different transformer. It may be possible to provide the appropriate power but it won't be a drop-in solution.