Justubes2
Ozzy found in his system that they worked better without the HFC. I use them with the HFC products and like them just fine. For me where they are placed in the system makes the bigger difference. Near or on the wall before the power conditioners best for me.I also found that on the power line that my front end of my system was better than on a amp line.(I got a improvement at the amp) but it was a bigger improvement at the front end side. I use the same splitters and have many HFC products plugged in to them along with the Puron filters.
Ozzy is very good at what he does with his system. So you should try them with out the HFC products. then maybe add them back in later at different location on your power line. Just remember the HFC products take a little time to settle back in after removing.
Good luck