Foster, I forgot to confirm that this is for the Atma-Sphere MA-2 amps, as you surmised. We also have an older home with thick oak flooring. Our speakers (Eidolons) are also spiked using Walker Audio Valid Points on resonance control discs, to very considerable improvement over the stock spikes. At this point, the 3" butcher block is sitting on some special variation of sorbothane that Lloyd has found to work in some applications better than he ever expected. We plan to next experiment with replacing the sorbothane with Valid Points on resonance control to see what change occurs.
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