Like Mike said, pretty close to the bottom of the food chain. At least for my concrete floor setup. It would go considerably up the food chain for my TTs if I had wood flooring on joists.
Can an audio rack be that important?
When we spend Tens of thousands on audio equipment are we losing sight on the importance of a good audio rack? I have seen many setups were ultra high end audio equipment is used sub-par equipment racks.
I have been grappling with buying a high end audio rack for sometime but have always put it off as less important.
What does a reference rack actually do for the sound of high quality components?