CD and DVD players are very sensitive mechanical devices. Even when reading ordinary CD's, the laser tracking device must reliably sample data over 44,000 times per second. When it comes to reading DVD's or the new high-res music formats, that number can get into the millions. Even the smallest of airborne and self-induced vibration/resonance can cause imperfect tracking and degrade the sound and picture quality.

By decoupling your CD and DVD player from its' shelf -- via cones or an isolation platform -- you will realize a significant increase in detail and a decrease in the noise floor. Music will have more depth and video will exhibit a more dynamic contrast of colours.

Vibration control represents one of the best bang-for-the-buck upgrades you can make, with prices starting around $100.