Direct lines and adding a power conditioner

I have 5 direct lines with audiophile receptacles - Maestro, Oyaide R1 and Teslaplex. The direct lines come from a secondary electrical panel on the other side of the wall as the receptacles, so the 10 gauge romex wire is only a few feet long for each run.
I have tried a couple of power conditioners between the direct lines and equipment, but they have suppressed the dynamics. I was wondering has anyone used any type of power conditioner that would help the articulation and naturalness of the sound without any negative effects to the overall presentation?
thanks.