Place this $199 Marigo Labs Signature 3D Mat on top of a CD or DVD, and it'll make it sound a WHOLE LOT BETTER. Check this out: "Instruments and voices take on additional (natural) weight, depth and fullness. There’s also a greater sense of air and three-dimensionality, and a more natural decay to the sound. The differences are unmistakable." www.hometheaterhifi.com/volume_12_3/marigo-labs-signature...