eForCity&reg; 2 pk 6' DIGITAL AUDIO OPTICAL FIBER OPTIC TOSLINK CABLE, Black Toslink Digital Audio Cable provides you the cleanest possible signal, even at extreme volume levels. These cables use 1mm low-loss core, low-jitter synthetic fiber and heavy metal connectors to dampen vibration, giving you the ultimate listening experience. Optical cables transfer the signal using light; thus completely eliminating any chance for RFI, EMI or ground loop interference. The stylish PVC HEAVY 5.0mm JACKET helps prevent cable damage and adds flexibility and durability for years of listening pleasure. MOULDED STRAIN RELIEFS reduce stress where cable and connectors meet.