Presently ChordMusic from the Chord Company (the cable manufacturer, not the DAC manufacturer of the same name). It used to connect a Bartók to a Stax headphone amplifier and now it connects the Vivaldi DAC with a Headamp headphone amplifier. I did not shop around before committing, as Chord cables have worked to my liking in the Naim system I used to own before the dCS devices. Maybe with planned upgrades to the digital cables I might revisit that choice too.