I considered what I might put under my SR PowerCell tonight. Because of the stiffness of the Hologram A and Ds as well as the Precision power cord to the wall, I ruled out any cones. It would just be too unstable. I do have an unused Acapella Silencio base which does provide excellent isolation. Frankly the task of unplugging everything, removing the PowerCell, placing the Acapella on the Mana stand, and reinstalling everything, is just too daunting for the little gain I think I would get. I do have some solid carbon feet that I could just pick up a corner and install all around. I might try that. I also have regular and pro Aerios, but the Mana top would have to be perfectly level. I also have one of Walker's platforms for the Walker Velocitor but it is small. It really works, however.