Digital Copper III
Harmonic TechnologyEstimated price (community-sourced)
Original retail — discontinued, no used price recorded yet
About the Digital Copper III
Harmonic Technology's Digital Copper III is a 75-ohm coaxial digital cable available terminated with either single-ended RCA or BNC connectors. It is manufactured using their proprietary Single Crystal (OCC) copper conductor, which eliminates crystal boundaries and impurities to preserve the integrity of the digital waveform. This cable enhances harmonic richness, reduces grain and fuzz, and provides a velvety-black background that highlights small details in the soundstage. The copper conductor imparts a slightly rich sound with added bass and smooth treble detail, making it ideal for systems needing more sweetness in the highs. The cable features advanced shielding to achieve a very low noise floor, resulting in outstanding clarity, resolution, and sound staging. It is considered a reference-grade digital cable that can transform the sound of an audio system.