Please visit http://www.criticalmasssystems.com/ or Call Joe at 630 640-3814 for more information. Critical Mass Systems crafts high-performance vibration mitigation systems for high-end audio. Critical Mass Systems racks are not isolation systems as they do not prevent the transmission of vibration. Rather, the filter system manages the flow of vibration into and out of the component as well as the rack architecture supporting it. Our proprietary internal vibration filtering materials and rack architecture operate together to mitigate vibration in the floor, the rack, the shelf and the component at the same time. This ensures even energy transfer throughout the rack architecture and filter system so your component can retain the “sound” that was intended, revealing the inner detail of the music. Please visit http://www.avshowrooms.com for the best high performance audio videos on the Internet. We are the premier destination for high end audio equipment reviews, company tours, and show reports.