Am i missing something without a power conditioner?


I need your advice on power conditioners. I know there is alot talked about with power conditioners. But let me explain my situation and what i have. First and foremost i upgraded all my stock power cords. I am using and have a Krell FPB 600 amp with a Shunyata Research Sigma HC power cord. I am using and have an Audio Research Ref 6 preamp with a Shunyata King Cobra Helix CX power cord. And have a Rega ISIS cd player with a Shunyata Sigma digital power cord. I have 1 dedicated 20 amp line with a 4 plug 20 amp wall outlet that my amp and preamp plug into. My question is with these high quality power cords do i still need a power conditioner? 
tattooedtrackman
@audiotroy how would you compare the isotek to a transparent conditioner & power cable. Esp what you feel it does to the sound?
Thanks 
Ralph, very few real audiophiles want an industrial, discontinued power regenerator, especially one that would or might need service from a company that really doesn't care about the consumer market way too impractical.

Also we have tested regenerators from Exact Power and PS Audio and none of them made systems sound as good as the best passives.

As per Transparent, never cared for their power products cable companies generally don't make the best power conditioners. 

Companies like Isotek do not sell anything other than AC products generally make the best power products. 

As per CPT we haven't tested them yet, there are people who seem to think that they are good.

Dave and Troy
Audio Doctor NJ
There are a lot of CPT users on there forums for sure, it is how I heard of them and then bought one based on research and recommendations.
I am sure they are not the last word by far but for $1500 for a unit that could handle everything I run it was worth a test.
Biggest holdup is that CPT are pretty backed up with orders so may not be a quick purchase and delivery.
Tattoo what you are missing is low noise floor to let the music pass thru with clarity, black background , speed, more 3D , why I am planning to get Niagara series and their new power cables, stormy series....If am not happy just return them, music direct has 60 days trial...