Power Filter Advice for a Dev 200 pls?

[Music or sound]

I tried many different power filters over the years but none was acceptable as some improvements were compensated with major sound restrictions (mostly dynamically and timbre). As I have now floor boxes with very short power cables (see my system:http://devialetchat.com/Thread-Using-Devialet-s-active-cross-over) most filters would be at least awkward. I just got the new LessLoss firewall module http://www.lessloss.com/firewall-module-...0b972364e2. It is a quite small device so I could mount one in one floor box and I experienced the first time an improvement without any negative sound attributes. Less noise (I thought before there was almost none as I have a dedicated line and I am the only customer on the power company's transformer) allows me to enjoy music also at low sound levels. But it does not restrict the dynamics. So loud is better too!
Maybe I should get one more to separate the sources from the amp!