Even the most advanced home theaters aren't immune to digital jitter. This time domain error in the digital signal during digital-to-analog conversion by your AV receiver can produce audible imperfections: phase distortion, higher noise floor and loss of audio clarity. Ordinary fiber optic cables can actually increase jitter. Their low-grade fiber limits the amount of signal transferred down the light path, causing data loss and inferior sound. Plus, their unpolished terminations often cause internal light reflections that induce even more jitter.