The new English Electric EE1 Plus Ethernet Noise Isolator is designed to eliminate noise and interference at the network level, according to the manufacturer.
In most cases, the English Electric EE1 Plus Ethernet Noise Isolator serves as the final touch for a high-end hi-fi setup. The device aims to filter out noise that may be present in your wired (home) network, in a completely passive manner—meaning it requires no external power source. You simply place the filter between the Ethernet cable from your router or switch and your audio device. The filter’s housing is made of aluminum, and it comes with two decoupling isolation feet.
Relatively speaking, the EE1 Plus is not exactly cheap, priced at £600. However, as mentioned, it could be the final step in achieving an “ultimate” high-end system. Additionally, it may come in handy if you’re struggling with persistent noise that cannot be eliminated by other means, such as upgrading to higher-quality Ethernet cables.