I finally tried the rubber feet for RTP4, the muddy coloration is horrible, it doesn't sound transparent. I like to put the RTP4 flat on the table instead, it gives the same sound signature as Magix but is brighter. When I moved from flat table into Magix I got more low-level detail while keeping the same signature.
I have found that the RTP-4 power strips work excellent for mass dampening the components! I put one on top of my nettop and the other on top of my EMU0404 USB, it gave HUGE improvements in low-level detail and clarity!!