The ">Marigo Audio Evolution Signature Mat ... These new mats are half the thickness as the previous 3-D mats. Materials technology and additional advancements offer significantly upgraded performance over the 3-D Signature Mat. Marigo Audio's Evolution Signature Mat - 2 years in development, is a powerful proprietary composite material created using an embedded carbon nano-tube structure which dramatically reduces the level of disc vibration.... is an eXtremely effective accessory for both CD and DVD (5 inch optical discs, CD/SACD/DVD/blu-ray) playback that dramatically improves low level detail resolution... image separation... soundstage depth... and front to back image layering... resulting in a more believable and realistic musical presentation!!! A Personal Favorite... considered a "necessity"... not just an accessory!!!