My Quadrature Z monoblocks have a base that Steve designed. It’s made of copper and provides a multi-layer damping and ground system.
@clio09 Yup, my DNA 0.5 has Steve’s Gravity Base he adapted from development work he did for Berning. Due to the expense of copper these days they now use a highly-engineered and dense wood-based product they find as effective but much cheaper than copper. All I know is it added several lbs. to my amp and can’t wait to finally hear the thing.