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? 
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I also feel like i wasted thousands and thousands of dollars upgrading all my power cords, and still need a power conditioner. So confused about this. 
Fan Boy Prattle?
So one is to assume that we include your recommendation of the Panamax in the same category then ieales?
@tattooedtrackman fear not you’ve not wasted a cent. The effect of improving the AC to your equipment is cumulative. From the breaker box all the way to the IEC on the component, upgrades at every step can pay dividends.

I will not not offer any opinion on which conditioner might suit you best, you can look at my system to see what I use. However I will offer that if you do get a conditioner you can further improve things by tweaking the feet and base it sits on. Conditioners and AC supplies in general are susceptible to vibration induced interference and using solutions to deal with this will pay back. In my case adding a Marigo sub platform under my conditioners was a very positive improvement. It’s certainly not the case that you just want to slap them on the floor and forget about it

sorry if this only adds to your confusion but the tweaks and anal attention to every detail are what makes this hobby fun