Hello,
I find this result surprising, considering that using the HRS around the world has yielded universal praise, including at the Shunyata factory listening space. For those who are interested, this is a 9.5-inch wide by 17-inch deep constrained layer plinth made of custom high-density materials designed by HRS engineering. It is mounted on grounding feet (G7) and then placed on top of G-Link stainless steel spikes, and for tile/wood floors, floor protectors. This three-part system should drop the background noise noticeably. Exupgh12, if you are not using the G-Link spikes, you should borrow them and try them. If you are and are still not hearing results, let your dealer know, and we can set an appointment with engineering. HRS is always interested in the exceptions that help improve the product when studied. I am pleased you like the look.