Sewell Toslink Fiber Optic Audio Cable, 50 ft Eliminates Ground Loops (the AC hum picked up from power cables).Clean signal, even at high volumes. Eliminates distortions from imperfections of inductance, capacitance, and resistance in copper wire. Low-loss, low-jitter performance.Full-size male TOSLINK optical audio connectors. Molded strain relief connectors. Precision polished fiber tips.