That being said, in my system currently I am only using one of them. Like many I am constantly changing things looking for better performance and with my current configuration one of my Silnote cables is unused.
I am planning to build a AC Distribution box soon and other modifications will undoubtedly follow so I am quite sure I will find a position in my system for my second Silnote cable at some point.
I have found the Silnote Poseidon ES cable to be superior at unmasking the subtle details in the music, compared with my other power cables. Of course more detail comes with an overall leaner sound, so depending on what you are hoping to accomplish this cable could be a great addition.
Good luck,
Gary