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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Showing 1 response by canibefrank

i use a Furman PL-8C. it has a big torroidal tranny
the power in me hood is suspect but seems stable and clean. we do not tax the power here at all. my non-audiphile system of MacBook Pro and LSR 305s sounds very good, noise floor is non-existent and black. I do run a reclocker for the USB into a PreSonus DAC.
everything is plugged into the furman and the system is protected and fed RFI free and regulated power.
if nothing else, i feel better for using the Furman. I lived somewhere that had terrible power and lost a nice Yamaha Nat Sound reciever twice in 6 months....