If you would think of rack(s) as a component in your system and not something that simply holds the components it will be easier to justify the amount of time and money you will spend tuning your rack with the rest of the equipment. Included with the racks are dampening, shelving and isolation choices to tune the system to your liking. My racks aren't the "best" but with carbon fiber shelving, carbon fiber cones, Sims Pucks and filling the vertical tubing with dampening material, sand and very fine gravel I've found a "sound" I like. The reduction of vibration does clean up the background,"darker background", letting you hear deeper into the music with better separation of instruments.