The Chord Company has added a new digital cable to their range of Indigo interconnects. The Indigo Plus Digital features the same precision-machined resonance-damping acrylic plug surrounds and secondary signal return conductor configuration as used on the Indigo Plus analogue cable. There however, other than the indigo sleeve, the similarities end. The Indigo Plus Digital features specially treated high-purity, oxygen-free, solid-core copper conductors, a gas foamed polyethylene dielectric and a unique combination shielding system designed to protect the signal from high-frequency interference.