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
O yes, the Hurricane cord for my amp goes straight into the wall. 
Jim Heckman
aalenik ....That is exactly what i heard also from alot of people. That putting a conditioner on a power amp is like putting a condom on it? Now ive read alot of good reviews about the Shunyata Denali 2000t conditioner for HC amps. I too honestly dont know. And being that i want to find one used you can forget about demoing it.                                                                                                                                                                                                        billshenefelt... Yes thats exactly right !!!
@tattooedtrackman, I have a Shunyata Denali 2000t that I have tried on my Plinius SA Reference amp. Although it did not have a negative effect on the amp, it also did nothing positive that I could detect.
On the other hand, I did hear an improvement with my Transport and Dac plugged into the Denali 2000t and/or Preamp.
lak.... Il tell you the Gods honest truth. I was really listening to my system to hear if i really need a conditioner. The sound seems so clean and so pure that i could not imagine how cleaner my system could actually sound. I really think it would be a very big waste of money as of now. I really can not see my system sounding any better and more cleaner than now even with the best conditioner there is. 
Btw ...I dont even have a dedicated 15a circuit for my cd player and Krell B&W Bass Alignment filters. I have 1 Dedicated 20a circuit with a 4 outlets that i plug my Krell FPB 600 and my ARC Ref 6 preamp.