Balanced earphone replacement cable. Based on RC-WT1, the RC-788 swaps the 3,5 mm jack for a 2,5 mm 4 pole plug. With its separate Left/Right channel wires and separate +/- signal transfer, the RC-78B enables balanced operation for your earphones. When connected to the balanced headphone amp, RC-78B can gratly enhance channel separation as well as markedly increase the signal to noise ratio. This result in a wider sound stage and more controlled textured bass - perfect for balanced output enthusiasts.