The sound with the PC-4 opened up very nicely not because of increased treble energy. As stated earlier, from the first moment you have the impression that the upper midrange with the conditioner is smoother and darker. Despite that, everything is clearer, soundstage depth expands and so do the spaces between the performers as though everybody on stage moved away from each other so you can see them better.
This hilarious effect of better clarity with a smoother top end was easily noticeable on e.s.t.’s Viaticum
especially on my favorite track"The Well-wisher". It is very warm and focused on coherence. Any extraction of details isn't good because sounds start to stick to each other. The recording was mastered such that the sound is very dense and it has to be played with utmost precision to not ruin the whole effect. I think that my system manages it very well and I liked it before with the power strip. But with the PC-4 it got even better - much
better. Better is a cliché like putting a pillow under your head but I can't help it - better is what you get when using a PC-4 in your system.