My Neuance shelves were also built to replace the standard shelves on my rack. The Neuance sit on upward-facing spikes, the only way I have ever tried them.
What's under your Neuance platform
I just picked up a two Neuance platforms, using them under the preamp and transport for now. I have some brightstar isonode feet I'm using under the Neuance to help isolate it from the equipment rack shelving. Has anyone found different feet changing the sonics of there Neuances vs placing direct on the shelf?