I am reorganizing my system, moving everything to 3" maple block on the floor. Currently, each block is sitting on four Herbie's superior decoupling spikes. For my amp and preamp, the blocks are doubled with an additional set of four superior decoupling spikes between the layers (I'm not sure if this is overkill or not).
My components are as follows:
Power Conditioner: Torus RM 15 Plus
Source: LUMIN S1 with external Linear power supply
Preamplifier: Don Sachs Pre 2
Amplifier: Upgraded RM-9 mk ii
What would be the best products and configuration for each component?