Three generations of Esprit Audio Eterna polarised cables. Since 1999 Eterna cables are a highly important mid-range line in the portfolio of this renowned French high-end audio cable manufacturer. The version with mains power supply lasted for two years and after that Esprit Audio switched to batteries. Not everyone knows, but Esprit Audio will celebrate an impressive 25th anniversary in 2022. Over the years they have established themselves as a premium French cable manufacturer with distribution to 21 countries.