@ Ozzy
You may want to experiment with the spikes on your low carpet on concrete as I have heard from other members with similar situations that the spikes sounded better by suspending the AUVAs.
I’m using spikes under mines as I have very thick carpet and padding on top of concrete.
I think you will be pleasantly surprised moving from bearings or spring type devices when you hear your loudspeakers firmly planted on AUVAs...
I saw the Aussie Audiophile Stackaudio review and he was quite impressed. I have been using my AUVA 100 for over a year and have the AUVA Eq under all of my components with a noticeable difference in details, soundstaging and imaging.
Wig