Four Tenderfoot isolation feet or Iso-Cups/SuperSonic Hardballs between each amp and maple block would be essential to bring out more of the amps' inherent potential.
Deluxe Superior Decoupling Spikes or Fat Gliders between each maple block and floor would be additionally beneficial, though with Tenderfoot or Iso-Cup isolation of the amps, the maple blocks would likely be just fine sitting directly on the carpet.
Damping instruments on the tubes are always beneficial, too.
Steve
Herbie's Audio Lab