HRS , the real effective eliminate external and internal chassis vibration & resonance . HRS is military specification designed and built in U.S.A , to ensure you will get the highest possible real performance. HRS not the VOODOO product , it's real engineering research for many years before manufactured . You will never know your system performance until you do eliminate vibration and resonance issue. 

Damping plates is designed to eliminate chassis vibration & resonance put it on top of your equipments.
Nimbus & coupler is designed to eliminate chassis vibration & resonance put it under your equipments .