Jazzhead, we may be the only two providing feedback on Cleanus. I have the second up in the range, Silver Cleanus, you have the 4x pricier top of the range Atlantis Cleanus.
In my case, I have it passively filtering my distribution block, and it just liberates the higher frequencies from all the hash that's about. It's grounded by it's own Olympus Minimus box.
In due course I'm going to try Poseidon and Olympus Tellus, and have another go at grounding options that didn't sell themselves to me first time round (grounding via Atlantis cables, pwr amp -ve spkr termnl grounding).
Have you tried Powerus passive filtering distribution block?
Spirit , no experience with the Powerus as yet . Have you tried the AC wraps , they work very well in helping tame the nasties to give you a more organic flow . However not so much fit and forget , more try and see . You have to find the right combination that works for you . They generally work well tightly wrapped around your Power Cord , as close to the inlet as is possible . LL put me on to these , maybe he will chime in as well .