The Chord C-stream Ethernet Cable is Cat 7 spec featuring a high speed secure connection that will optimise your audio for prime performance. Through rigorous research Chord found out that not only do premium components and shielding improve cable performance but there is also audible improvement when using an ethernet cable in a specific direction. To that end Chord has included a black dot to be plugged in at the source to ensure optimal sonic integrity. This bundled with oxygen-free copper conductors Low-loss low-density polyethene insulation high-quality shielding 24ct gold plating and an over moulded plug surround with a strain relief system ensures you get high-speed interference-free use and premium sound quality no matter the source.