AC Coupler Black Signature is NAT's hand-assembled 8-foot AC power cord for high-current audio components. It combines specially treated high-purity OFC conductors in a multi solid-core and litz-wire geometry with an air dielectric, keeping capacitance and resistance low while supporting substantial continuous and peak power delivery.

Its robust construction, low contact resistance and substantial terminations are designed for mechanically stable, low-impedance mains delivery. The plug and IEC connector configuration is confirmed for the destination system and mains standard when ordering.