I have a Rel S/812 and really like it with my Revel Salon 2 speakers. I had been using the stock Rel cable but figured if Rel makes an upgraded cable I should see what else is out there. Transparent was great to work with to create a Super Rel cable to go along with my Super gen 6 speaker cables. My early impression is that the sub utterly disappears. Rel is all about the sub getting the “same sonic signature” as the mains and now it truly is. The sub seems to go deeper and sounds more solid. Definitely an interesting tweak.