The Black cables by Tellurium Q were a multi-award-winning range, but Tellurium decided that to overhaul the whole series. The result is the Black II range, an upgrade on those already exceptional cables, but delivered at the same price as the previous generation! This product is the new version of the Black Digital XLR cable, otherwise known as AES/EBU. AES/EBU connections are usually found on very high-end equipment, and if you have a choice between AES/EBU and Digital RCA, we would always recommend AES/EBU as it comfortably outperforms the RCA equivalent with a resistance of 110-Ohm compared to 75-Ohm.